FPSO Spread Mooring
Spread mooring systems are multi-point mooring systems that moor vessels to the seabed using multiple mooring lines.
While the vessel is in a fixed heading relative to the seabed, its bow typically heads into the dominant environment which is usually the direction where the largest waves are coming from.
The mooring lines can be directly attached to the hull of the vessel as well as indirectly using buoys on the sea surface. When they are directly attached to the hull, structural modifications are required to provide strong points for the mooring lines. Spread mooring systems with buoys are called Conventional Buoy Mooring (CBM) systems and do not require any modifications to the vessel hull structures

Single Point Moorings
The single point mooring buoy consists of a buoy that is permanently moored to the seabed by means of multiple mooring lines. The buoy contains a bearing system that allows a part of it to rotate around the moored geostatic part. When moored to this rotating part of the buoy with a mooring connection, the vessel is able to freely weathervane around the geostatic part of the buoy

Turret Mooring System
The turret mooring system consists of a turret assembly that is integrated into a vessel and permanently fixed to the seabed by means of a mooring system. The turret system contains a bearing system that allows the vessel to rotate around the fixed geostatic part of the turret, which is attached to the mooring system.

FPSO Moorings 1

FPSO Moorings 2