Mooring Buoy
A Mooring Buoy system consists of multiple steel buoys. The exact configuration depends on water depth, field requirements and environmental conditions. Typically it is a pattern of four to eight mooring points used to moor tankers. Each point consists of a rigid buoy moored to the seabed by a chain and an anchor. The prime purpose of each buoy is to act as an anchoring point for the tanker to berth. The buoys are moored to the seabed, therefore, the tanker berths without use of its own anchors.
Each buoy has a chain hawser assembly through the centre of the buoy unit, terminating in a chainstopper on deck. The buoys are normally fitted with double quick release hooks to disconnect quickly from the tanker. Hawsers are connected to the bow or stern of the tanker on one end and to the quick release hook of the buoy on the other end.
After mooring to the buoys, the tanker may start (off)loading by connecting a subsea hose string to the ships manifold. The other end of the hose string connects to the PipeLine End Manifold (PLEM), fixed to the seabed or any other pipeline transferring the product to or from any installation located onshore or offshore. Should the tanker leave the berth, the hose string will be laid down on the seabed, to be picked up again when the next tanker arrives.
Anchor arrangement - An anchor arrangement is deployed to connect the buoy to the seabed. For each buoy, dynamic behaviour calcultions predict the behaviour of the buoy for various wind, wave and current conditions. These calculations determine the optimum anchor leg arrangement, and the size of the various anchor leg components.
Basic anchor leg components are:
1、Anchors or piles, depending on the soil data, to connect the anchor legs to the seabed
2、Anchor chain
3、Chainstoppers to connect the chain to the buoy
Polyurea Foam Filled Mooring Buoy Polyurea mooring buoy is mainly used for ship's anchorage mooring. It can be also used for other water engineering. Composite Materials: Polyurea elastomer material, PE high elastic foam, steel and other composite materials. The buoy body has good elasticity.
Polyurea mooring buoy is a newly designed mooring equipment for ships and boats with the features of good impact resistance, light weight, large buoyancy, good corrosion resistance, bright and stable color and convenience for layout and recycling. The buoy body adopts the rigid flexible combined structure, which makes it have excellent anti-extrusion and impact resistance.
Cylindrical foam buoy is one type of single point systems. Except cylindrical buoys, chain through buoys and pick-up buoys are the other two types of surface support buoys.
EVA foam filled buoy is a cylindrical mooring system that floats on the surface of the water. It is used to provide supplies, shelter, degaussing pr standby for the mooring ships.
Offshore mooring buoy, also known as water drum buoy, drum type mooring equipment which floats on the water surface and connects the anchor in the bottom of water with the anchor chains. Offshore mooring buoy is used for typhoon resistance mooring, anchorage mooring, temporary mooring and other mooring systems. It is usually arranged in the anchorage space of the inside and outside harbor.
This barrel mooring buoy is anti-typhoon anchor mooring buoy for ship berthing. It is used for ships and naval vessels to mooring and avoid the typhoon at sea. Corresponding to different tonnage of vessels, there are different anchoring system. Various specifications of the mooring buoys can be used for ship berthing of different tonnage vessels. It is convenient and flexible to use mooring buoys to help ship mooring. Mooring buoy is an important anchor mooring system.
