Type of vessel:  ROV & DSV
Design:  ST-259 Arctic

128 m OCV


The vessel, designated ST-259 Arctic, is a purpose built Offshore Construction Vessel for Arctic waters,built at Tersan Shipyard, Turkey. Owner is Allseas, The Netherlands

Propulsion system is designed with triple redundance.

The vessels are specially designed for operation under severe weather conditions in cold waters with high maneuverability and station keeping capabilities.

The vessels will be outfitted and prepared for the following duties:

  • ROV operations like pipeline / route survey
  • Sub-sea installation work through moonpool and over shipside
  • Crane operations
  • Cable / pipelaying from carousels


Main Characteristics

Length over all  128.50 m
Length between p.p.  116.90 m
Breadth moulded  25.00 m
Depth to 2nd deck  10.80 m
Max draft  approx. 7.50 m
DWT at SWL / 7.50 m  approx. 7500 tons
Deck area aft of hangar  1650 m2
Speed at 6.0 m draft  approx. 16 knots
Accommodation  120 persons
Main crane  300t @ 14m