The VS480 AHTS was designed by VikSandvik at the turn of the new century and three were built one for Solstad and two for DOF. This design perhaps embodies everything that one could want for moving oil rigs, with 20,000 bhp giving a bollard pull of 240 tonnes, a decent sized deck area and good bulk carrying capacities. Perhaps its suitability for these general tasks is illustrated by the fact that one of them, the Norman Ivan has been on hire to Murphy Oil for its Malasia operations since 2004. 

Photos by Victor Gibson taken when it was in Aberdeen.

TYPE: VS 480 AHTS		NAME: Normand Ivan		PHOTO: Vic Gibson
GENERAL		PROPULSION		DECK EQUIPMENT
Length OA	81.0 m	Engines	2 x Wartsila	Workdrum pull	500 t
Breadth	20 m	BHP	20000	Capacity 1	4250m x 83mm
DWT	4138 t	kW	14720	Capacity 2
Deck area	580 m2	For'd Thruster	1 x 1425 kW	Towdrum pull	400 t
Fuel	1642 m3	Az Thruster	1 x 880 kW	Capacity 1	2697m x 83mm
Pot water	597 m3	Aft Thrusters	1 x 880kW	Capacity 2	2697m x 83mm
Mud	846 m3	Bollard pull	240 t	Sharks Jaw	2 x Karmforks
Base oil	262 m3	DP	DP2 Kongsberg	Cranes	1 x 10t
Brine	846 m3	Joystick		Tank Cleaning	?
Dry bulk	336 m3	Year built	2002	Shipyard	Flekkefjord
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