FSO Madiela Spread Mooring
Scope of Work
SOFEC designed and supplied the 12-leg anchoring system and deckmounted equipment including chain supports and jacking system for a permanent spread mooring system for installation on a MODEC
converted 139,000 dwt FSO vessel. The FSO is located at Marathon’s Tchatamba Field offshore Gabon in 55m water depth.
This SOFEC spread mooring system is ABS classed.
General Description
| Client Name: | Marathon Petroleum Gabon |
| Contract Award: | March 1997 |
| Installation Date: | January 1998 |
| First Oil: | August 1998 |
| Vessel Size: | 139,000 dwt |
| Storage Capacity: | 760,000 bbls |
| Water Depth: | 55m (179ft) |
Design Environmental Criteria
(100-year storm)
| Significant Wave Height: | 4m (13ft) |
| Wind Velocity: | 12m/s (23.3 knots) |
| Current (surface): | 1m/s (1.9 knots) |