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2. Structural provision for accommodation, turret & cranes

3. Crude Oil Washing (COW) system

4. Inert Gas (IG) system

5. Slop tank system

6. Ballast water system

7. Fuel oil system

8. Safety systems

The standard approach when designing a new build FPSO is to start with a

clean sheet and design an offshore structure as a permanently moored vessel

according to regulatory requirements, e.g. Lloyds rules. This typically results in an

optimised structure that bears little resemblance to a trading tanker, which is the

source for a majority of converted FPSOs. The trading tanker business is a highly

competitive market where tanker designs have evolved out of necessity into a “no
frills” vessel that provide a minimum cost product that employ the maximum

capability of the respective shipyards to manufacture a tanker within a tight
fabrication schedule slot. Accordingly, the tanker option would involve

modification of a standard Aframax tanker at the design stage in order to introduce
the specific requirements of the FPSO; whilst retaining as much of the trading

tanker design as possible.

The modifications to the vessel would be similar to those employed for the

converted FPSO, with the added benefit of new equipment instead of

refurbishment of the old, and the optimisation of the marine systems that new

fabrication allows. The design modifications to the hull are assumed to be minimal,

hence no changes are made to the hull framing, plate thickness or welds on the

basis that the proposed duty will not exceed that of a tanker working on worldwide

duty. Secondly, the main changes in duty are configured through the turret and the

topsides process loads, which are both accounted for via supplementary stiffening.

Hull Particulars: (800,000 bbls Storage Tanker)

Loa 243.20 m
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