Photo of the Skandi Mongstad in Stavanger (Probably)

This fine ship appeared in 2008, hardly causing a ripple, which is a bit of a surprise since it seems to be, to a degree, revolutionary, the combination of main propulsion and manoeuvring capability only having EVER appeared before in the Maersk Mariner class in 1986. This is a powerful vessel with a load of sideways power and DPII capability, but most importantly it is provided with a single main propeller positioned centrally aft in order for the best transfer of power from the engine to the environment, and also positioned aft are two azimuthing thrusters provided just for manoeuvring, but which can be retracted into the hull, so that the hull form is not interrupted by their presence.

Elsewhere are a couple of forward thrusters and another azimuthing thruster, which on one plan seems to be positioned centrally under the middle of the hull. Despite the wonderfulness of the design there do not seem to be any others in circulation, although Boa appear to have ordered some, possibly not built due to the oil price crash. I think that DEM is an acronym which covers the availability of stored electrical power to fulfil some roles in the propulsion or manoeuvring of the vessel, but unfortunately on line information has provide to be inadequate, probably due to changes of ownership of the design house and others. 

TYPE: VS 495 DEM		NAME: Skandi Mongstad		PHOTO: Jan Plug
GENERAL		PROPULSION		CARGO CAPACITY
Length OA	96.9 m	Engines	4 x MANs	Fuel	1258 m3
Breadth	21.0 m	BHP/kW	9060 kW	Pot water	870 m3
DWT	4600 t	For'd Thrusters	2 x 880 kW	Mud	884 m3
Deck area	1030 m2	Az Thruster For'd	1 x 1200 kW	Base oil	- m3
		Aft Azimuths	2 x 1200 kW + 1 x 5000 kW prop	Brine	472 m3
Year built	2008	Joystick		Dry bulk	396 m3
Shipyard	Kleven	DP II	Kongsberg	Tank Cleaning
Previous names
Comments	This design is provided with a single screw aft for transit plus two aft azimuthing thrusters for manoeuvring.