Schiehallion
Ship Number
1737
Vessel Type
Fpso
Built
Belfast
Slip Number
Building dock
Launch Date
August 1, 1996
Launched By
Mrs Paula Browne, Mother Of BP Chief Executive, John Browne
Delivered
March 1, 1998
Owner
BP Exploration
Weight
154000 grt
BP Length
246m feet
Breadth
No. of Screws
Speed (approx)
Propulsion
Official No.
Registered
Fate
Active
 Schiehallion

The FPSO vessel, designed and built at Harland and Wolff, is 246m long, with a dead-weight of 154,000t.
 
The simple, barge-type hull, built from pre-fabricated welded blocks, has a design life of 25 years and a fatigue life of 50 years. A high forecastle provides protection to the forward process area and the mooring turret. A full height centreline bulkhead allows seven pairs of cargo tanks in the mid-body, one pair forward of the mooring turret, providing a total of 950,000bbl of storage capacity.
 
TURRET AND MOORINGS The FPSO is moored by a top-mounted internal turret (TMIT), which allows the vessel to weathervane around its anchored position. Anchoring is achieved using 14 anchor legs, consisting of 6.25in studless chain and wire rope, fixed to anchor piles at a 1650m radius. The fixed part of the turret is composed of a 14m-diameter cylinder, inserted through the vessel hull and supported at deck-level on the turret collar, by a bogie-bearing system.
 
PRODUCTION FACILITIES The production facilities consist of a number of processes for: the recovery of the reservoir products, the cleaning and re-injection of gas and water, and the chemical treatment of the reservoir and facilities. The two gas-oil-water separation trains are designed for a total peak 154,000bbl of oil per day.