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What Are Rubber Fenders And Why Select To Pretect Ship
The rubber fender has the characteristics of good elasticity, high engine absorption, convenient maintenance, long service life and facilitating large batch production with wide applications worldwide. Rubber fenders can not only protect ships and terminals but also reduce horizontal loads for the terminal, improving the berthing capacity of the wharf.
Types, Features, And Applications Of Rubber Fenders
1. Circular rubber fender
Circular rubber fender also known as Y type fender, The characteristics are low reaction force, small in surface pressure, reasonable energy absorption, with wide applications and convenient installation and maintenance, especially suitable for vintage terminals.
2. D-type ( semicircle) rubber fender
The D type rubber fender has a semicircle shape. It has the features of moderate reaction force, higher sucking energy than cylindrical fender, more convenient installation. Due to the small width bottom size, it is especially suitable for a frame-style wharf.
3. DO type rubber fender
The DO type rubber fender has a larger reaction force and energy absorption than the D type. Installation strength and service life are greatly improved than D type fender, suitable for frame-style terminals.
4. Super arch (V-type) rubber fender
The SA super arch fender is also known as V type rubber fender with moderate reaction force, high suction energy, firm and convenient installation.
5. DA type rubber fender
DA type rubber fender has the characteristics of high suction energy and low reaction energy. The products have higher stress dispersibility, long service life. The front end is equipped with a defense board to reduce the surface pressure. It has various installation methods, more convenient.
6. Super cell(SC)rubber fender
Super cell rubber fender also known as SC type rubber fender, has a drum shape. The main characteristics are low reaction force, large suction energy. The tilt compression mechanics property reducing is little. The installation is convenient. It is widely used for large and medium-sized wharfs.
Transportation And Storage Of Rubber Fenders
Transportation
1.The rubber fenders are transported by automobile.
2.Fender in the loading and unloading process, it should take the correct hoisting method. The rubber fender should be kept clean and do not hit. The fender should be placed firmly.
3. It should ensure the fender cargo is not unshifted, not loose in the entire transportation process.
4.After that the fenders are transported to the designated site, unload the cargo with suitable lifting equipment to avoid damage and collision.
Storage
When the rubber fender is stored, it should avoid direct sunlight, rain and snow and prevent contacting with acid, alkali, oils and organic solvent, 1 meter from the heat source. The inventory temperature is maintained at -15°C -40°C and the storage area is approximately about 400 square meters.
What Should Be Paid Attention To In The Daily Inspection Of Rubber Fenders
Concerning some things that should be paid attention to during the use of marine rubber fenders, the daily maintenance and inspection work must be done well.
1. Pay attention to check whether the fender is damaged and the air pressure is normal.
2. Check whether the surface of the fender rope has sharp things which will cause damage to the rubber fender.
3. Check whether the foot bolts of the fender and the bolts which fix the impingement plate are loose. If there is a loose, after tightened,it should fix the fixed bolt and pads through the welding method.
4. Check whether the impingement plate has the phenomenon of depression, cracking, corrosion, in order to prevent getting rust, the anti-corrosion treatment should be carried out once a year as much as possible.
5 Check whether the impingement plate has an anteversion which will easily be caused by the accumulation of materials on the inner side of the impingement plate.
6. Check whether there is scratching on the impingement plate, if so, it should be replaced in time.
7. Check whether the rubber elastic parts which will be lifting the impingement plate have an abnormality, timely treatment and replacement should be done for any abnormality.
Rubber fender used as a protection tool in wharf, all ships should be equipped with marine fenders, which can guarantee personal safety on board.
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Useful Knowledge For Marine Anchor
A marine anchor is an indispensable device for ensuring ship safety, which is used to stabilize the ship when the ship is not parked or mooring without a buoy. When some ships enter the berthing area, the anchor will be thrown into the water for steady berthing.
Why Marine Anchor Used For Smooth Boat Berthing
How does an anchor can stabilize a ship? Because the anchor is sinking to the bottom, which will generate a huge grasp force, and the gravity of the marine anchor chain itself is large enough. The ship will be fixed.
When the ship needs to be temporarily moored, the ship anchor will be thrown out. An extra length of the anchor chain will be put to more close to the bottom of the sea. As the anchor is slowly sinking, the fluke of the anchor will have contact with the underwater bottom. At the same time, the anchor fluke under the seabed will be subject to a horizontal tension force. Under the dual role of tension force and gravity, the anchor is slowly inserted into the seaside, which is getting stronger and ensures stable berthing and water safety.
The anchor chain is also very important, the total weight of the anchor chain is much larger than the anchor. The length or the anchor chain is several times larger than the water depth, and there is a relatively long anchor chain is lying on the water bottom, and the underwater also has a great friction resistance to the anchor chain.
How To Select The Anchorage
When the boat anchor is thrown, the boat cannot be started and control normally and will be drifting everywhere, so a safe and suitable anchorage should be selected before throwing, surveying its topography and choosing the appropriate mooring area.
The selected anchorage ground should have the appropriate water depth, no large waves, good shielding.
1. When the anchor station is selected in the deepwater area, the largest water depth of the anchorage generally does not exceed 1/4 of the total length of the anchor chain. Otherwise, the anchorage grasps will be affected.
2. The geological and terrain of the anchorage should be good, with moderate soft and hard bottom and clayey seabed, so that the anchor grasp force is better.
3. It is best that the terrain around the anchorage can provide a natural barrier to the vessel, which makes the anchor to get better into the underwater bottom, becoming more secure, so that the ship has stable berthing.
4. The anchorage should also be away from the channel, the water area and there is no cable below.
Main Types Of Marine Anchor
1. Danforth anchor
Danforth anchor is the first generation of high holding power anchors and belongs to stockless anchors with a large grasping weight ratio and rodent area. The gripping bottom is deep and numerous, and the grasping force is extremely large. But the anchor fluke is easily broken and the storage is inconvenient, not suitable for transportation boats.
2.Bohr anchor
The Bohr anchor is also called TW type anchor or N type anchor. It has more than 2 times the holding power of the conventional anchor of the same weight. The anchor has large flat flukes made out of high tensile steel plate material. It is used as a bow anchor when sailing.
It is designed to fit into small anchor pockets on modern ships and the hollow flukes are welded from two plates to create strong anchoring performance under various circumstances.
3.Hall anchor
Hall anchor is also known as the mountain anchor, which is a stockless HHP anchor, free to rotate, inclined to stock. The anchor head and the anchor fluke are a whole casting. When a lying anchor is contacted with the underwater bottom through any side of the anchor, the resistance generated by the anchor head strip friction discharge soil is forced to generate the grasp force of the anchor.
4.Spek anchor
The Spek anchor is a modified Hall anchor. Plate and reinforcing rib are installed at the anchor crown. Therefore, the fluke of the anchor is easy to turn to the ground with high stability and when stores the anchor, the anchor fluke naturally facing up. Moreover, in contact with the boat shell, it will not damage the boat shell plate.
5.AC-14 anchor
AC-14 anchor is a stockless HHP anchor with a wide anchor crown, thick and long flukes, and longitudinal ribs. It is available in a self-colored finish or in a galvanized finish. Its design provides excellent weight to performance ratios. The lighter weight which is 25% weight reduction compared to conventional anchors and high holding power makes it good stability and then it is commonly used as the main anchor on large container ships, supertankers. It has an excellent performance in a variety of soils.
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Various Types Of Marine Lights
In general, as a product used for marine lighting, it is necessary to specially purchase. Marine lights include a flushing light, a walkway light, an emergency light, a deck operation lighting, a searchlight for a remote search, an explosion-proof light, the mobile lighting used in temporary workplaces. In order to meet the requirements of different vessels, it is necessary to learn different categories of marine lighting and their characteristics.
Ceiling Lights
The common marine ceiling lights include a ceiling light with a square cover, a spherical ceiling light, a pointed round ceiling light, a semi-rounded ceiling lamp, a small ceiling lamp with a long square cover, etc. Marine lighting manufacturers provide wide-use boat ceiling lights, suitable for various ship rooms, emphasizing that as long as there is a ceiling, it is possible to install, with simple installation and styles.
Explosion-proof lighting
Explosion-proof lighting is designed to meet the illumination of dangerous sites with inflammable gas and dust. The LED lighting unit meets the harshest environmental specification of gas group hydrogen. It can prevent sparks and high temperature inside the lamp to ignite the combustible gas and dust in the surrounding environments. According to the difference of light source, it can be classified into explosion proof incandescent light, high-pressure mercury light, fluorescent light, LED light.
Searchlight
Marine search lights become more affordable and much more efficient with the recent vast improvements in LED technology to satisfy your boat lighting requirements. The searchlight is widely used for ship illumination and searching for night navigation, life-saving and warning.
Signal Lights
Marine signal lights allow other boats to determine the type and relative angle of a boat and thus decide if there is a danger of collision. The navigation light should fulfill the applicable rules for the cruise vessel with impact resistance and high energy efficiency. Easy installation and various mounting options ensure flexibility, time savings and increase the safety of crew members. The efficiency and life span of LEDs continues to improve, and LED luminaires are virtually maintenance-free.
Energy-saving lighting
The energy-saving lighting a wide-use marine light. It has superior brightness, longer service life than the general incandescent bulbs, especially outstanding in power-saving. There’re various types of energy-saving lamps with U-shaped, spiral, petal-type, etc, with power from 3 watts to 40 watts. The ship pendant lights and ceiling lights can generally install energy-saving lamps.
Wall Light
The common marine wall lights with double-headed magnolia wall lights, double head olive wall lights, double-head drum wall lights, double lace cup wall light, mirror front wall light, etc. Good boat light manufacturers will supply superb quality custom wall lights, the installation height of which can be adjusted as needed.
Marin lighting, which is necessary boat equipment, provides bright illumination for ship navigation and transmits different signal information. Marine lights should have high stability, good tolerance and high standard quality.
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Marine Lighting Is Important For Safely Ship Navigation
In the field of transportation, marine transport is a very important way and lighting is an essential requirement. Marine lighting, is a kind of traffic light, to meet various requirements of lighting and signal for ship or marine drilling platform.
Marine lights are referred to as a general name of illuminated ship lights. The boat light can not only be used for lighting and navigation but also be applied for signal transmission.
The design and manufacturing of the marine lighting must be in line with the relevant provisions of the ship norms and the international conventions. It can be installed and applied certificated by the ship inspection department.
The facilities involved in the ship shall be based on the International Convention. In the case of night boating, working or poor visibility, in order to indicate the position of the ships, the shipping status, the various kinds of lighting fixtures must be equipped on the boat, displaying various signals, for identifying and avoidance.
The arc, visible distance, chrominance, enclosure protection and installation position of the boat navigation light and the signal light are strictly regulated.
What Functions The Marine Lighting Should Satisfy
Onboard, marine lighting often needs a variety of different functions. Excellent marine lights can have high stability, which can withstand environments of high temperature, high salt and high-frequency vibration, and can also maintain a long service life.
Strong vibration resistance
Boat illumination is not easy to fall off due to its own packaging structure, so it can be used for long periods in an environment that has a large vibration power on the ship. In addition to the unique construction of the marine lamp, the epoxy material of the marine lights has a strong anti-vibration. As long as a fixed structure suitable for the ship adopted for the ship luminaire, it can guarantee smooth navigation.
Comprehensive functions
Marine luminaires can create lighting effects based on environmental requirements with rich color temperature, to meet the different requirements of the crew for various applications. Soft light can effectively drive fatigue and tension during navigation, and mounted in the cabin or bedroom to improve sleep quality. Marine lighting can also be used as signal lights to transmit different messages, providing effective navigation guidelines when sailing.
Green environmental protection and high security
Marine lights have an extremely high safety during use because they adopt LED light sources which are not breaking easily or emitting toxic substances, and the leakage of electricity or damage caused by the moisture won’t occur with the good packaging. Moreover, the boat light does not have noise, nor radiation during use, and it does not affect the health.
For more detailed information, please visit the article page of marine lighting introduction.
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Useful Knowledge Shared For LED Explosion-proof Light
LED explosion-proof lamp adopts the LED light source, widely used in the special flammable and explosive working environments, with the advantages of energy-saving, high light efficiency, strong lampshade and lamp cover, long service life, flexible light distribution, excellent heat dissipation, etc.
How To Select The Appropriate Marine LED Explosion-proof Light
The LED explosion-proof light is widely used in offshore homework. For the selecting of marine explosion-proof lighting, the explosion-proof structure and temperature are important points, which are very professional. Measuring the weight of heat-dissipating is a simple and effective way to select the good boat LED explosion-proof light. An appropriate power LED explosion-proof lamp, the relative weight is generally moderate. An inferior LED explosion-proof light manufacturer is unwilling to cost heat dissipating.
The LED explosion-proof light is mainly based on high-power LED lamp beads and package integrated chips, combined with external structures and applicable places. It is should be cautious to select the LED explosion-proof lighting, especially the power and lighting. The size of the LED lampshade is closely combined. Since the temperature of the LED lamp is high, the high-power lamp naturally requires a larger outer shell to achieve good heat dissipation.
Useful Tips To Maintain LED Explosion-proof Light For Long Service Life
After selecting and purchasing the LED explosion-proof light, the question of how to maintain for long service life always be paid to attention.
1. To regularly check the LED explosion-proof light, check whether the grounding is normal.
2. In order to extend the service life of the LED explosion-proof lamp, do not install the windshield device and the like in a humid environment, which has a large negative effect.
3. Regularly clean and wipe the outside dust with a dry cloth, improving the light efficiency and heat dissipation performance of the lamp and the wet cloth can’t be used. It is best to cut off the power before cleaning.
4. In the moisture environment, if there are puddles in the light, it should be maintained in time, replacing the sealing parts to ensure the protective performance of the shell.
5. If the light source is damaged, it should be turned off in a timely, so as not to cause the electrical component, such as the ballast, to be in an abnormal state due to the light source.
6. On the surface of the explosion-proof, it should be thinly coated with a replacement type anti-rust oil and should pay attention to the seal when close the lid, whether the sealing circle is working.
7. After opening the cover, it should be checked whether the composite surface of the explosion-proof combination is intact, whether the rubber seal is hard or becomes sticky, causing the wire insulation to become green and carbonized, whether the insulation and the electrical component are deformed, if discovering these problems. It should be repaired and replaced in time.
8. Check the transparent parts, whether there is a trace of foreign object impact, the protection network has loosening, corrosion, etc. If so, stop using, timely repairing and replacement.
9. The sea portion of the LED explosion-proof lamp should not be disassembled and opened.
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What Is The LED Explosion-proof Light
The LED explosion-proof light, which is one kind of explosion-proof light, is a lighting device for special industries. Its working principle is basically the same as the explosion-proof lamp. The difference is that its light source adopts the LED light source. It is widely used in places which have high-protection requirements and are moist, such as ships, chemical, oil, mining, pharmaceutical and painting.
The LED explosion-proof lighting refers to the lighting fixtures which are the various specific measures taken to prevent ignition of the surrounding explosive mixtures. The LED explosion-proof light is currently the most energy-saving explosion-proof light, which can be used safely in a variety of flammable and explosive places, suitable for oil mining, military, offshore oil platform, cruise, etc.
The LED explosion-proof lamp includes a lampshade, a lamp cover at the front end of the lampshade, a light emitter and batteries inside the lampshade, a switch on the surface of the lampshade.
The illuminator is a high-power LED module, and there is a wide voltage input drive circuit between the illuminator and the battery, which includes a constant current chip. The constant current chip and the battery are composed of a power module. The power module is sealed with the LED module. The lamp cover and the lampshade are ultrasonic welded.
It uses a low heating value of LED to achieve an intrinsically safe level explosion-proof, and the LED source has a long service life. The heat dissipation device is installed on the lampshade, which can realize effective heat dissipation of the LED module, guaranteeing the use of high stability.
Performance And Advantages Of LED Explosion-proof Light
1. LED explosion-proof light can save 50% -70% energy compared to traditional light sources, that is, the same lighting effect can be obtained with smaller power LED luminaires replacing larger power traditional lighting.
2.The lampshade is made of aluminum alloy and has a surface treatment with high-pressure static spray.
3.The lamp cover is made of tempered glass with stainless steel exposed fasteners. The protective cover is galvanized with a sprayed surface, double anti-corrosion.
4.The lamp adopts the flameproof structure design and the material is high-strength die-cast aluminum. The surface is sprayed and the transparent cover adopts high-strength tempered glass, corrosion resistance, beautiful, and strong.
5.It has an integrated design, easy to install and repair, the ballast cavity independently design, effectively avoid the heat transfer of the light source cavity to the ballast.
6.It has a flexible light distribution, can be made into various LED floodlights.
7.It adopts LED as a light source with high light efficiency, long service life and the average service life is more than 50,000 hours, with long-term maintenance-free.
8. No Wireless fuse, nor electrode aging and other disadvantages
9. Power supply with DC low voltage, the heating value is much lower than the traditional electrical light source and does not generate high-frequency electromagnetic fields, no electromagnetic interference to surrounding equipment.
10.LED adopts epoxy resin solid package, impact resistance, anti-vibration, not easy to break.
11. The emission spectrum of LED is completely visible, no ultraviolet radiation, no mercury and does not produce heavy metal pollution.
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What Is The LED Explosion-proof Light
The LED explosion-proof light, which is one kind of explosion-proof light, is a lighting device for special industries. Its working principle is basically the same as the explosion-proof lamp. The difference is that its light source adopts the LED light source. It is widely used in places which have high-protection requirements and are moist, such as ships, chemical, oil, mining, pharmaceutical and painting.
The LED explosion-proof lighting refers to the lighting fixtures which are the various specific measures taken to prevent ignition of the surrounding explosive mixtures. The LED explosion-proof light is currently the most energy-saving explosion-proof light, which can be used safely in a variety of flammable and explosive places, suitable for oil mining, military, offshore oil platform, cruise, etc.
The LED explosion-proof lamp includes a lampshade, a lamp cover at the front end of the lampshade, a light emitter and batteries inside the lampshade, a switch on the surface of the lampshade.
The illuminator is a high-power LED module, and there is a wide voltage input drive circuit between the illuminator and the battery, which includes a constant current chip. The constant current chip and the battery are composed of a power module. The power module is sealed with the LED module. The lamp cover and the lampshade are ultrasonic welded.
It uses a low heating value of LED to achieve an intrinsically safe level explosion-proof, and the LED source has a long service life. The heat dissipation device is installed on the lampshade, which can realize effective heat dissipation of the LED module, guaranteeing the use of high stability.
Performance And Advantages Of LED Explosion-proof Light
1. LED explosion-proof light can save 50% -70% energy compared to traditional light sources, that is, the same lighting effect can be obtained with smaller power LED luminaires replacing larger power traditional lighting.
2.The lampshade is made of aluminum alloy and has a surface treatment with high-pressure static spray.
3.The lamp cover is made of tempered glass with stainless steel exposed fasteners. The protective cover is galvanized with a sprayed surface, double anti-corrosion.
4.The lamp adopts the flameproof structure design and the material is high-strength die-cast aluminum. The surface is sprayed and the transparent cover adopts high-strength tempered glass, corrosion resistance, beautiful, and strong.
5.It has an integrated design, easy to install and repair, the ballast cavity independently design, effectively avoid the heat transfer of the light source cavity to the ballast.
6.It has a flexible light distribution, can be made into various LED floodlights.
7.It adopts LED as a light source with high light efficiency, long service life and the average service life is more than 50,000 hours, with long-term maintenance-free.
8. No Wireless fuse, nor electrode aging and other disadvantages
9. Power supply with DC low voltage, the heating value is much lower than the traditional electrical light source and does not generate high-frequency electromagnetic fields, no electromagnetic interference to surrounding equipment.
10.LED adopts epoxy resin solid package, impact resistance, anti-vibration, not easy to break.
11. The emission spectrum of LED is completely visible, no ultraviolet radiation, no mercury and does not produce heavy metal pollution.
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Key Regulations And Requirements For Navigation Lights
The specific installation position, lighting angle and the brightness for the navigation light, all have special requirements. The irregular use or failure of the navigation light will transmit the error signal and caused huge obstacles for the collision prevention.
Masthead light
It is installed above on the mast of a ship or above on the centerline, showing uninterrupted in the 225 degree horizontal arc.
Sidelight
It is installed on the left and right sides of the highest boat deck. The screen of sidelight facing the light surface should be coated with the berlin black. The height of the screen is at least equal to the height of the lamp. The boat which has a length of more than 80 meters, should install red, green sidelight on the bow, stern.
Stern light
The boat stern light should be installed in the middle of the stern. The height of the light should be kept horizontally with the sidelight as possible, but can’t be higher than the height of the sidelight.
Headlight
The marine headlight is placed in the bow of the pusher barge and the height can’t be higher than the headlight.
Red-green flashing light
It is the left red, right green marine flash lighting installed above the sidelight and its flashing frequency is 50 to 70 per minute. The boats with a length of less than 12 meters can also adopt a water torch instead of red and green flashing lights and should keep light bright with clear color.
Anchor light
The marine anchor light is installed on the top of the mast with all-around flashing.
Each provision concerning the navigation light must be observed from sunset to sunrise. The signal lights can also be displayed in the situation that the visibility is poor during the day. At the time of navigation light displaying, the lighting which confuses or weakens the display performance of the signal light, can’t be allowed to display.
The Function Requirements
1. The navigation light should be waterproof and the lamp holder should have a structure that prevents its own loose. It should adopt a two-filament bulb. The control box should be in the cab and the switch of the control box should have an instruction to explain its use. The cable of the navigation light is fastened with the complete lampshade & bulb and the good & reliable ground.
2. The switch should be set on the navigation light control box, used to convert the power supply. Each navigation light should be powered by a separate branch that is placed close to the control box installed in the cab and should adopt the switch and fuse which are installed in the control box for control and protection of each insulation of these branches.
3.The navigation light control box should be powered directly from the main distribution board and emergency distribution board.
4. There should be an automatic indicator that can make an auditory or a visual alarm signal at each navigation light and there should be some measurements which are adopted to prevent the navigation light go out due to the signal light failure. The auditory and visual alarms for the failure of the navigation light control box should be provided.
The article has combed the key requirements and regulations for navigation lights and signal lights, giving an explanation for the various types and functions of the boat navigation light.
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Useful Knowledge Shared For Marine Navigation Light
The marine navigation light, also known as a marine signal light, is used to show the state of ship sailing or parking, which can indicate the navigation direction at night and the size of the ships. It is an important basis for ships to adopt avoidance measures and effectively avoid collisions among ships, especially at night or in poor visibility.
The Categories Of Marine Navigation Light
The ship navigation signal system is an important part of the ship's security and it’s an important lighting system to ensure the safety of night boating. According to the international regulations for preventing collisions at sea, the navigation signal equipment must be installed on the ship with ship navigation lights, ship signal lights and foghorn. The navigation lighting system includes headlight, sidelight, stern light, towing light, anchor light, yellow all-round flashing light, maneuvering signal light and flashing light.
Headlight
The ship headlight is white light placed above the centerline of a ship, showing uninterrupted in the 180 degree horizontal arc.
Sidelight
The sidelight generally refers to the green light on the starboard and the red light on the portside. Each light is showing uninterrupted in a 112. 5 degree horizontal arc.
Stern light
The marine stern light is the white light which is installed on the place as close to the stern as possible.
Towing light
The boat towing light refers to the yellow light placed as close as possible to the stern, showing uninterrupted in the 135 degree horizontal arc.
Anchor light
The anchor light is a type of boat signal light, which is displaying uninterrupted in a 360 degree horizontal arc.
Flashing light
A marine flashing light is a signal light that is flashing with the frequency of 120 or above 120 per minute.
Navigation light indicator
It is an indicator centralized control of the on-off of the navigation lights and a device that can give an alarm when the navigation lights fail.
For more detailed introduction, please visit the article page of Basic explanation for marine navigation light.
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High Holding Power Anchor With Great Gripping Force
The anchor has a large holding power to weight ratio, so it is called a high holding power anchor. The gripping force is more than two times larger than the ordinary stockless anchor of the same weight. There are Martrosov anchor, Danforth Anchor, Schdringer anchor, Staccato anchor, etc.
A high holding power anchor is classified into a stocked anchor and a stockless anchor. Its general feature is that the anchor fluke is wide and long with deep gnawing soil, good stability.
1.Stocked high holding power anchor
The typical kinds of this anchor are the Danforth anchor and Steven anchor.
The anchor head is provided with a stabilizer bar to ensure stability, generally suitable for more soft substrates, with inconvenient storage, so this type of HHP anchor is suitable for engineering ships and small ships.
Danforth anchor
The Danforth anchor is also known as swallow anchor and the anchor fluke is rotated about 30 ° back and forth. The holding power to weight ratio is generally greater than 10, mostly used in engineering vessels.
Steven anchor
The anchor has a short and large fluke, and the maximum angle of the anchor fluke can be adjusted by the movable wedge mounted on the anchor rod to accommodate a variety of substrates. The holding power to weight ratio is 17 to 34, widely used as a positioning anchor for oil platforms.
2.Stockless high holding power anchor
The stockless HHP anchor is developed by the stock HHP anchor. It has improved the anchor fluke of the stockless anchor. The typical stockless high holding power anchor is the AC-14 anchor developed by the United Kingdom and the Boer anchor developed by the Netherlands.
AC-14 anchor
The AC-14 anchor is a commonly used anchor. The anchor fluke can have an allowable deviation for the left and right corner within 1 degree. AC-14 anchor is a casting anchor with black painting surface treatment. It has the advantages of stable structure, thick and wide flukes, adaptability to various substrates, rapid gnawing, high gripping stability with holding power to weight ratio ranges from 12 to 14. So it is commonly used as the bow anchor in the large ship or ro-ro ship.
Boer anchor
The Boer anchor also called TW type anchor or N type anchor. It has smooth and sharp anchor flukes, with the advantages of adapting to a variety of substrates, high stability, convenience for dropping and weighing anchor, easy for storage, suitable for the bow anchor in a large ship and positioning anchor in a workship.
The high holding power anchors, which include Danforth anchor, AC-14 anchor, TW type anchor, etc, have the advantages of great gripping force, deep gnawing, high stability, commonly used in a wide variety of ships.
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Useful Tips For The Inflatable Life Raft
When the inflatable life raft is used, the raft and the storage cartridge can be thrown directly into the water. The life raft can be automatically inflated. When the ship sank too fast under the water, it is too late to throw it into the water surface. The hydrostatic pressure release on the raft will automatically remove and the emergency inflatable life raft will be released, floated automatically.
The detailed steps as follows
1.Take the hook opening on the hydrostatic pressure release and launch the small ring, making the chain hook fall, or rotating the manual release device, and the raft will slide to the sea.
2.When the height is less than 11m from the water surface, or when the raft is thrown into the water, it is necessary to continue to pull out the first cable and open the valve of the inflatable cylinder, so that the raft is floated above the seawater.
3.If there is an overturned state, it should be centered. The person should wear a life jacket, and climb the bottom of the raft. When standing in the steel bottle, the hands pull the bottom, squatting and hypokinesis.
The Installation Of Inflatable Life Raft
When the inflatable life raft is folded, it is stored in the glass steel storage cartridge. Generally, it is generally arranged on the two-port boards. When installing, the raft is welded to the ship deck, ensuring that the storage cartridge is in the hierarchical position, and the fix is with the kundy which is connected to the raft and the manual detachment assembly. The assembly components are connected to the hydrostatic pressure release.
1. The bowline that is taken from the life-saving raft cylinder, is firmly connected to the hydrostatic pressure release ring, and there is an easy-to-break rope on the connecting ring, and the other end of the easy-to-break rope should be connected in the hydrostatic pressure release.
2. It is not allowed to pull the bowline from the storage cartridge.
What Should Be Paid Attention To The Use Of Inflatable Life Raft
1. When the life raft is drifting too urgently, the sea anchor can be put into water and reduce the rafting speed.
2. in order to avoid the wind and waves, the enter-exit door should be put down, and the duty for looking out will be strengthened through the hoping window on the raft hanger.
3. If there is water in the raft, take out the water scoop from the repair bag and drain it with the absorbent sponge.
4.In the night, using the flashlight to emit a Mousta signal, during the day, the mirror is transmitted by the sunlight.
5. When it is raining, utilize the drinking water bottle and the water pipe and deposit the rainwater to prepare for drinking.
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What Is The Life Raft
Life raft has been widely used in various types of navigation ships, playing an increasingly important role in emergency rescue, which is a safe and effective marine life-saving equipment. Compared with other emergency life rafts, inflatable life raft has the significant advantages of small size, lightweight, easy to use, stable performance, safe and reliable.
The liferaft is life-saving equipment without self-propelled capability, used by the crew in the ship. It is equipment that ships getting away from dangerous areas or emergency evacuation. It can be rapidly released into the water and floats over the surface. All kinds of life rafts have a certain buoyancy and can be protected from wind, rain, waves and sunburning with a ceiling, with food and water for survival. It can be stored in a temperature of -10 to + 65 ° C and applied within the temperature range of -1 to +30 ° C.
Two Types Of Life Raft - Rigid And Inflatable Types
Rigid life raft
The rigid life raft, also known as the traditional life-saving raft, its structure is made of galvanized iron, aluminum alloy plate, stainless steel plate. Then the cover is made from the flame retardant material. The top of the raft is provided with a fixed rigid canopy and an entrance, and the bottom is a wooden lattice. The raft is slipped under the water or put down the water with a hanging raft.
The traditional life raft is simple and cost-effective, but the volume is large, cumbersome less carrier.
Inflatable life raft
The inflatable life raft, which is the most widely used liferaft, can be inflated and opened automatically in a short time. It is made of rubber nylon cloth, which can be folded and stored with lightweight. According to its deployment method, there are two types including throw-over type and davit launched type. The most common is a throw-over life raft, and the davit launched liferaft is mainly used for passenger ships.
The davit launched liferaft is to hang life raft at ship side by launching equipment and go inboard from ship’s deck when inflating and to fall it down on the sea by davit. In case of failure in davit launching equipment, the life raft is also designed to be inflated automatically in the same way as throw-over type. It can be thrown out in an emergency, which can also be thrown into the water. The raft can automatically release and float on the water surface.
The self-inflating life raft is designed, when the sea surface is in the overturned condition since the top of the raft is circular, which can reduce contact surface with water, the center of gravity in the bottom of the life raft, after the inflatability is completed, it can be self-centered.
For more introduction, please visit the article of learning the life raft quickly.
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Tips To Select A Good Mooring Bollard Manufacturer
Mooring bollard has high performance for the marine mooring purpose, which is more and more welcomed by the customers. In order to purchase the excellent quality marine bollard, what should be considered for the manufacturing? Here, introduce some tips to select a good mooring bollard manufacturer.
1. Shape requirements
It is necessary to pay attention to the shape and the shape & style should satisfy the rationality and the performance, avoiding quality problems.
2.Specifications
When manufacturers a mooring bollard, the specifications should be reasonable, reducing the quality problems, guaranteeing excellent performance.
3.Guaranteeing Performance
The function and performance are important for a manufacturer. The manufacturing should ensure high performance and the materials should be superior and rational.
4.Price
The price always is an important factor to select a manufacturer. A good mooring bollard manufacturer or supplier should provide the best-value products.
Professional mooring bollard manufacturer - YSmarines
YSmarines, which is a professional and leading manufacturer of marine and offshore equipment such as mooring equipment, marine lighting, marine anchor, fairlead, life raft, etc, providing mooring bollards adopting materials of cast aluminum or stainless steel 316L with sprayed or polished surface, beautiful safe and reliable, which can adapt to the harsh ocean environment, widely used to various yacht terminals and ships, the pulling force selection ranges from 1.5 tons to 10 tons, the most competitive prices and reliable quality guaranteed.
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What Is The Mooring Bollard
Marine mooring is a ship state, including the ties of docks, floating cylinders, or other mooring boats, mooring line required, relying on cable to fix the boat. The mooring bollard refers to the bollard fixed on the deck or the pier to tie the cable. It is generally made through metal casting or welding. Because it is very stressed when used, the base is very firm. In order to prevent the cable from slipping, the bollard is generally covered with a bollard cap which is slightly larger than the pile. The bollards are usually mounted on the front of the bow, the stern of the ship.
The mooring bollard has a specific shape. After thriving into the water, it can quickly engage the bottom to generate the grasping force. The vessel or other floating system is left to the special appliance of the designated water via anchor chain or anchor cable. A first anchor is installed on the outside of the ship's left and right bulldone, another anchor of the same specification is placed at the deck for spare use.
There are various types of marine bollards, including curved dock bollard, cruciform bollard, double cruciform bollard, double bitt mooring bollard, kidney-shaped bollard, staghorn bollard also known as twin horn dock bollard, T head bollard.
Arrangement Requirements Of Mooring Bollard
The piles which provide cable assistance for dragging, are arranged in the front and stern and the direction should be consistent with the cable dragging direction. The chock and the fairlead should be maintained at a certain distance, which should not be less than 6 times the diameter of the mooring bollard for a large vessel and not less than 10 times the diameter for a small ship, generally within the range of 1.5 ~ 2.5m, to provide enough deck for mooring assistance rope, no obstacle allowed within 1m around the bollard, and the distance between the outer edge of the bollard and the gunnel should not be less than 1.5 times the diameter of the mooring bollard.
Maintenance Requirements For Mooring Bollard
The carrying capacity of the mooring bollard is very huge and its working environment is above the sea with strong corrosion, which can greatly affect the service life of the marine bollard. In order to extend the service life and reduce the various damages, a variety of maintenance work should be done for daily use.
Cleaning work
As it is generally applied in the ship above the sea, some sea shellies and microorganisms are parasitic, so it needs to clean the mooring bollard and pay attention to regular cleaning of these microorganisms.
Reinforcement work
In daily use, the mooring bollard will be pulled by the cable, resulting in under the pulling force in a long time and the loose possibility is very large. It is necessary to pay attention to the reinforcement requirements and the regular inspection for the tightness, guaranteeing stability.
What Should Be Paid Attention To For The Daily Use Of Mooring Bollard Due to the important function, the following problems should be paid attention to, ensuring the stable and reliable performance of the mooring bollard.
1.Operation correctly
The mooring bollard is easily damaged if there’s any problem exists during the operation, and the chance of failure will increase, so it is required to pay attention to the operation correctly, avoiding any error.
2. Do a good job for inspection
Even with superior quality, it is also possibly damaged during the use under the influence of external factors, which requires that during the application, pay attention to the inspection, avoiding the problems which will affect the normal use.
3.Solve the problem timely
In the daily use, it is necessary to inspect the mooring bollard regularly and solve the discovered problems timely.
For more introduction, you can visit the article page of concerning about the mooring bollard.
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Useful Tips To Find A Good Roller Fairlead Manufacturer
Roller fairlead plays an important role in mooring devices. Here we'll introduce some useful tips of the roller fairlead inlcuding installation, maintenance and how to find the best manufacturer & supplier.
Installation Precautions For Roller Fairlead
For the installation of the roller fairlead, what should be paid attention to?
1.Safety
It is necessary to pay attention to safety, although the device is not flammable, the safety environmental requirements should meet.
2. Environment
It is necessary to pay attention to avoiding environmental moisture and ensure that the environment has been in a dry state, avoiding rust in the process of installation.
3. Packaging
In the packaging requirements, it is to ensure excellent functions, extending the service life.
Maintenance Of Roller Fairlead
The roller fairlead is always exposed. If it is not well maintained in use, it will increase the chance of damage in use. The maintenance work is needed. So, how does the maintenance work do? Here are some instructions.
Anti-rust Work
For roller fairlead, made with stainless steel materials, people should apply a certain anti-rust oil on its surface before use, and reduce the rust chance in use through anti-rust oil, to ensure a good appearance.
Checking Work
Each component of roller fairlead is needed to be checked for daily use. For any small problem in the check, it is necessary to be paid attention and solve it, which will reduce the chances of damaging for ensuring the long-term service life.
Preventing Deformation
The deformation will affect the use. If the deformation is serious, it will directly lead to the occurrence of fracture. So in the applications,can prevent it from deforming through the control of the pressure.
Daily maintenance can ensure the normal use of roller fairlead, guaranteeing the good effect.
How To Select The Best Roller Fairlead Manufacturer
To ensure good performance, how to choose the high-quality products from the best roller fairlead manufacturer and what factors should be considered are important?
1. Appearance
The material quality, structure, processing level of a roller fairlead, can be reflected from the appearance.
In terms of the reliability of the roller fairlead, it is very important that there are no defects in the appearance, which will affect the intensity. Because of the roller fairlead in use, it is necessary to withstand the huge external force of the ship and it is necessary to ensure that the structure of the roller fairlead is stable, not damaged by the external force, with high requirements in strength.
A good roller fairlead manufacturer should use high-intensity materials and does a good job in processing and surface treatment, ensuring that there is no strength defect in the surface. Otherwise, even if there is no problem with the material intensity, it will also cause problems in the strength due to the surface defect, which will affect the normal functionality use.
The best manufacturer should adopt excellent quality material with the advanced process, then the color of the appearance will be uniform and bright.
2.Specifications
To select a quality roller fairlead, it is necessary to pay attention to the requirements on the specifications, the requirements on the specifications, which is required to transmit the cable on the specifications, because the cable has differences in size, length. The device that can be stored and used is also different from the specifications.
The best roller fairlead supplier should have different specifications to meet the requirements of the installation.
3. Environmental Restriction
Because of the different environments, there is a certain limit on the material of roller fairlead, especially for the marine equipment and the wear of metal device is very large. The requirements of corrosion resistance for the roller fairlead should be considered.
The supplier should adopt excellent corrosion resistance materials for superb roller fairlead.
4.Price
The price always is an important factor for choosing the best-value manufacturer. The most competitive prices with quality products can be a great advantage.
5.Craftsmanship
An excellent manufacturer & supplier should have advanced craftsmanship and strict quality requirements, which should meet the needs of effect and performance.
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Roller Fairlead - Important Part For Marine Mooring Device
Fairlead refers to the general name of the various devices which guide, limit, or change the direction and position of the cable without damaging the cable. Marine roller fairlead is one of the most widely used fairleads and is an important part of the marine mooring device.
Important Marine Mooring Device - Roller Fairlead
The Constitute Of Roller Fairlead
The roller fairlead is consisting of vertical rollers and horizontal rollers, which are replaced with a roller cable and have added a horizontal roller. It can direct cables from all directions can be guided. In addition to commonly used four-rolled fairlead, there are types of three rollers, five rollers, six rollers, seven rollers and nine rollers.
The warping roller fairlead is made of several independent rollers, closed and open, according to the number of separate rollers, the types of double rollers, three rollers, and four rollers are widely used. It can simultaneously derive the root cable, mostly used in large and medium-sized ships.
Important Role For Marine Mooring Device
The roller fairlead is suitable for the mooring of the engineering ship and the strait waterway with multi-directional conductors. There are also a relatively large roller fairlead that allows the ambulance person to transport the wounded person from here when there is an accident. The function of the roller fairlead is related to the normal navigation of the ship and the efficiency of the treatment personnel, even related to the life safety of the ship.
Working Principle Of Roller Fairlead
One basic working cycle of the roller fairlead is divided into five processes including intake, compression, combustion, expansion, exhaust.
When the roller works, the piston is moved back and forth in the cylinder, and this motion is converted to the crankshaft rotation motion by the crank link mechanism. The top of the piston movement in the cylinder is called a dead center, and the lowest position of the cylinder achieved by the movement is referred to as a stopping point. The piston from the dead point to the stop point becomes a stroke. Every turn in the crankshaft, the piston has two strokes.
The working system of the fairlead mainly includes roller cooling, roller lubrication, and fuel system.
1.Cooling System
The system is divided into freshwater cooling systems, seawater cooling systems, and central cooling systems. In order to spread this heat, the cooling liquid is used to continuously flow through the thermal member.
2. Lubrication System
The system includes lubrication, cooling, cleaning, sealing, corrosion, reducing noise.
3. Fuel system
The system mainly includes fuel installation, storage, dismissal, purification, heat, etc. The heating equipment to maintain heavy oil in the oil tank for maintaining the fluidity of heavy oil. Heavy oil should be purified and atomized by purification and atomization before transporting the roller fairlead high-pressure oil pump.
For more professional knowledge about roller fairlead, please visit the page of what is the roller fairlead.
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Ideal Marine Searchlight From YSmarines
Marine seachlight makes people can better explore new fields in night boating. The bright illuminates, can ensure safe navigation and promote the development of navigation.
The Factors To Consider For Selecting Best Marine Searchlight
1. Lighting requirements
High brightness
Excellent concentration effect, used as a marine spotlight
Strong penetration
2. Service Life/Stability
Long service life
High stability
Can switch on and normal use under ultra-low temperature and high-temperature.
3.Functions
Manual/automatic control
Multiple working modes
Adjustable high and low speed
Automatic second start
4.Installation and maintenance
Simple and fast installation
Long service life and maintenance-free.
Various installation methods such as on horizontal and vertical walls, vertical poles, and horizontal poles.
5. Response speed
Lighting up instantly, no preheating is required.
Can be hot-started, that is, it can be turned on repeatedly after it is closed, without cooling.
Can work continuously for 24 hours without shutting down and cooling.
Accurate positioning, no need to repeat adjustment
6. Weight/transport
Small volume, light weight, easy to transport, reducing the costs of transportation and installation.
Perfect packaging, which can effectively avoid the damage of vibration and extrusion caused by sea transportation, loading and unloading.
Professional Marine Searchlight Manufacturer - YSmarines
YSmarines is one of the most professional and leading marine searchlight manufacturers in China, which can provide high-performance products. The boat seachlight manufactured by YSmarines marine searchlight adopts aluminum alloy profiles and electrostatic spraying processes for surface treatment, with lightweight, strong heat dissipation performance, excellent waterproof, widely used for searching, night navigation, life-saving, warning, etc.
Why should choose YSmarines marine searchlight
1. The lamp shell of the search light is made of cast aluminum, which is strong and light.
2. It has an extremely high resistance to strong collisions, shock resistance and impact resistance.
3. High-strength tempered glass with high-temperature resistance.
4. It can be used as a ship spotlight with an excellent concentrating effect and the effective range is up to 2000m.
5.It has a xenon light source, high brightness with a brightness of up to 15000lm.
6.Fully sealed process design.
7. It can control the body to rotate for 350°horizontally and bend for 30°, with flexible and convenient operation.
The article introduces some useful tips to select ideal marine search light and YSmarines is one of the best choices for superior quality searchlight and spotlight, with advanced technology and the most competitive prices. YSmarines will strive to continue researching and developing marine lighting products to meet the development of navigation and will always shine brightly for ships.
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