5 Frequently Used Marine Mooring Equipment

Views: 242     Author: Lydia     Publish Time: 2023-11-23      Origin: Site

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5 Frequently Used Marine Mooring Equipment

Mooring is an essential component in cargo transportation. During the mooring period, the ship is subjected to a variety of natural and human influences. The mooring system refers to the use of a device to secure a ship to a wharf or other location in order to limit its movement. There are five main pieces of mooring equipment.

Explanation and classification

The mooring bollard is mooring ship equipment positioned in the wharf's superstructure. It is constructed and selected based on berth capacity and wharf structure type to satisfy the requirements of ships leaving the wharf, berthing, shifting, and turning in a safe, dependable, and convenient manner. It's made up of a shell, an anchor rod, a nut, a washer, an anchor plate, and column core packing. Column mooring bollards and cruciform bollards are the most popular forms in the shipping sector.

The mooring bollard materials are cast iron (HT200), ductile cast iron QT450-10, and cast steel (zg230-450), with specifications and models ranging from 50kn to 2000kn.

There are ordinary bollards, storm bollards, test bollards, and so on, depending on their purpose.

T head bollard, twin horn bollard, single bitt bollard, double bitt bollard, and kidney bollard are the different shapes.

How to Select a Mooring Bollard

The specification and size requirements must be considered when selecting mooring bollards. Certain constraints apply to the gadget due to the varying specifications and sizes of the ships.

To avoid installation problems, pay close attention to the limits on the installation position.

Attention must be paid to the installation requirements, particularly the power constraints, to guarantee that the device installation meets the stability requirements and ensures the effect.

To maintain the stability of the device in use, pay attention to the functional needs and functional restrictions, particularly the functional requirements of the cable and the bearing capacity limit.

Chock's Mooring


Mooring Chock is a closed-hole fairlead that is mounted on the bulwark and used to limit the cable's leading out of position. Round, oval, square, and closed mooring chock are the most common shapes.

The substance of its body is 204 steel seamless steel pipe stipulated in GB 8162. It can also be bent from grade A steel plate according to GB 712. The stainless steel clad plate is 1Cr18Ni9Ti stainless steel plate specified in GB 4237. The welding surface at the junction line of the body and the outside edge must be clean and devoid of fractures, warpage, and skew. The cutting must be straight and the sharp edge eliminated. The stainless steel clad plate must be flat with the body and free of flaws such as pores, cracks, and burrs.

How to Select a Mooring Chock

Corresponding types: The structural forms of various products vary. Because of the appropriate structural shape, we must select the corresponding kind chock to be able to utilize normally.

Mooring Fiber Wire Reel

Corresponding models

Different models of the same sort of mooring chocks exist, and there are variances in decoupling strands and materials between them. Based on this condition, we must determine the appropriate product model to be applicable.

significant accuracy: Because the application has significant demands on the structure and quality of the mooring chock, it necessitates items with high precision, which will have greater applicability due to their superior overall quality.

Fairlead Roller

Explanation and classification

Roller fairleads are fairleads made up of many independent rollers running in parallel and are classified as closed or open.

The most popular types of fairleads are two-roller, three-roller, and four-roller fairleads. It may export many cables at the same time and has a lower bulk than a fairlead with rollers. It is mostly found on large and medium-sized ships.

How to Select a Roller Fairlead

When picking, check to determine if the device's surface in contact with the cable is smooth. To minimize large abrasion of the cable during usage, which may result in the cable being easily broken and unable to be used for an extended period of time, when selecting the guide roller, it is necessary to pay attention to whether the surface contact with the cable is suitably clean.

Except for the body and pin shaft, look at the steel parts. In general, there is no issue with the fairlead roller in the body or pin shaft structure. As a result, it is suggested that while picking the device, we should pay attention to other steel parts, particularly whether the steel parts other than the body and pin shaft have been galvanized or coated.

Fender in Rubber

Explanation and classification

When berthing or mooring, a rubber fender is erected on the wharf or ship to absorb the impact energy between the ship and the wharf or ship and protect the ship and the wharf from damage.

Cylindrical rubber fender, DA type rubber fender, D type super arch rubber fender, drum type rubber fender, DO type rubber fender, and V type rubber fender are the different types. They differ in terms of reaction force, surface pressure, device maintenance, and ease of use.

How Do I Select a Rubber Fender?

Before making a purchase, we should think about the brand. Not all items are the same. Products with reputable brands can be relied on.

When shopping, look for damaged items and choose ones that are complete and pollution-free. When utilizing it later, pay attention to the placement position and do not place it at random.

Sharp objects should not be used to damage the wharf fender. Avoid direct sunlight and chemical deterioration with rubber items. Check it on a regular basis and replace it promptly if there is a problem.

Explanation and classification

The primary function of a marine anchor is to secure and stabilize a ship. When the anchor is lowered into the water, it might offer berthing space for the ship. It should be emphasized that this capability is achieved not only by a single anchor, but also by a long anchor chain.

There are many different types of anchors, which can be classified as rod anchors (also known as naval anchors), rodless anchors (also known as hall anchors and Speke anchors), high grip anchors (generally rod rotating claw anchors), and special anchors (commonly used for permanent mooring).

How Do You Select A Marine Anchor?

There are numerous options for maritime anchors. They are made of various materials.

One of the most popular anchors among recreational rowers in North America is the Bruce claw anchor. For most rowers, Bruce or delta provides the best value for money.

Plow anchors are appropriate for the majority of bow rollers. Fluke anchors are ideal for use as auxiliary or stern anchors. They work well in silt and may be simply kept on the majority of bow rollers.

Commercial ships' head anchors are mostly stockless anchors, while the tail anchors are sometimes stocked anchors and dovetail anchors.

The most common anchor materials are low-carbon steel, high-strength steel, stainless steel, and aluminum. Most traditional steel anchors on the market are made of low-carbon steel or high-strength steel. When choosing ship anchors, it is important to consider not only the length and weight of the ship, but also the anchor materials.

Summary


The mooring system refers to the use of technology to secure a ship at a dock or other location in order to limit its movement. This study discusses the definition, classification, and selection of various berthing devices.

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