This arrangement provides ample room to accommodate a large number of risers and umbilicals. Typically, risers and control umbilicals are located amidships on both sides of the vessel. Virtually all types of anchor leg configurations can be used with this system. Since the vessel is held essentially at a constant heading, the requirement for a turret structure with a large capacity slewing bearing, as well as the associated swivel stack for fluid, gas, chemical, hydraulic power, electrical power and control transfer is not needed.
Spread moorings can be used in applications requiring long service life, in any water depth, and on any size of vessel. Thus, its application is dependent on a site where the prevailing severe weather is highly directional. This style of mooring maintains the vessel on location with a fixed heading. Spread Mooring Systems utilize four groups of anchor legs, normally arranged in a symmetrical pattern, attached to the bow and stern of the vessel. Spread moored systems are mooring systems that allow tankers to moor at a fixed location at a fixed heading and allows tankers to (off)load their products. Also the special features of the different types will be displayed. In the left frame you can click on the type of mooring system and herewith additional information comes up. For different conditions different mooring systems are required. In this part of the site you can find all different types of mooring systems.
We hope the site is useful for you, enjoy! This is purely made to act as a guideline and to provide some background information. This site gives an explanation of all forces working on a mooring system, the boundary conditions that have to be taken into account and the possible mooring systems that result from thisĭo not use this site without consulting specialists in the field of mooring an FPSO.
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