FSO Safer External Turret
Scope of Work
SOFEC developed, designed and constructed an external turret-type SPM system for a 409,000 dwt tanker that serves as an FSO terminal for crude oil. Installed in March 1988, it is the largest FSO system in the world and is still currently operating.
This SOFEC external turret mooring system is ABS classed.
General Description
| Client Name: | Yemen Hunt Oil Company |
| Contract Award: | August 1986 |
| Installation Date: | March 1988 |
| Vessel Size: | 409,000 dwt |
| Storage Capacity: | 3,100,000 bbls |
| Water Depth: | 38m (122ft) |
| Fabrication: | Turret - Japan Vessel Conversion - Japan |
Design Environmental Criteria
100-year storm
| Significant Wave Height: | 6.3m (21ft) |
| Wind Velocity: | 30.4m/s (59 knots) |
| Current: | 0.7m/s (1.4 knots)Mooring System |
Mooring System
Turrets
6-leg Symmetric catenary: 6-in. ORQ chain
48-in.Ø piles
External Cantilevered Bow
Fluid Swivel Assembly
| Crude Oil: | 2 x 12-in. non-piggable paths (225 psi operating/350 psi test) |
| Hydraulic Control Swivel: | 6 x 0.5-in. paths (3,000 psi operating/4,500 psi test) |
Riser System
2 x 12-in. OCIMF submarine hoses
1 x Hydraulic umbilical