The Picture of a Wartsila engine under test is as used in Uisige
Gorm (for Process) and West Navion (for Drilling). The required
power is achieved by banking up engines in series. Very often
these are installed in modules and pretested prior to installation
as a complete power package. The engines themselves also
follow modular concepts. They comprise a system of unitised
components for casing, pot, top of engine etc and mounting on a
block 4 to 16 in line. As they are so often used in Marine
applications they are when prime ships components produced to
Survey , e.g. Lloyds. The sites linked give more detail. The engine
bed to take this Driver is incorporated into the base of the Deck
Module.
This section uses Uisige Gorm and West Navion to explain Power
Generation with particular reference to Diesels and Modules. In the first
instance concerning motive power for Process and the second for Propulsion.
If we now address West Navions propulsion we again find a
Wartsilla engine similar to the power driver on Uisige Gorm.
Instead of a single or twin screw it has a series of Thrusters
mounted in cans which can be directionally controlled by a
Dynamically Positioning System. The requirements for this Drill
Ship are to cruise from one drill site to another at a reasonable
speed, when 3 or 4 engines are used. when it gets to location
then the need for dynamically position (DPS) needs 1 or possibly
only 2 engines. All 4 engines are all committed to propulsion. The
Aker Ram Rig requires power and to meet this Wartsilla Engines
are used housed in a Power Module.
The picture of Uisige Gorm shows the profile of the conventional
FPSO based on a converted tanker. At the stage shown in the
Plaque it has only the Power Module on its deck. This Module
uses Wartsilla as unitised driver for power/water injection. If we
consider the main propulsion driver we have the typical marine
diesel by B & W, Wartsila, MAN etc which uses large inline
cylinders ( 4 to 16 ) with large pot diameter of nearly a metre.
Engines of this type vary in size according to the tanker size
100,000 - 250,000 te dwt. and the prime objective is to run on
general marine bunkered fuels at a good average ships cruising
speed, economically.
C2V
MODULEitus
a general understanding of Modules 
Level 1
Level 2
Level 3
Uisige Gorm, Cntr Module Wartsilla Diesel
DPS Thruster, e'motor / Wartsilla Driver Powered
Wartsilla Diesel, Typical Driver
C2V
C2V