Polar Duke

Type of vessel:  Seismic
Design:  ST-321

106.8 m Seismic Research Vessel for owner Rieber Shipping AS


"Polar Duke", designated ST-321, is a Seismic Research Vessel built at Vulcano S.A., Factorias, Spain, yard no. 532 for owner Rieber Shipping AS. It was delivered in 2010.

The vessel is intended for world wide operations, and the following features have been emphasised in the design:

  • Safety for crew
  • High towing capacity
  • Low resistance hull designed for high transit speed
  • High redundancy

The vessel will be outfitted and prepared for towing 12 (16) streamer cables.

Changed name to SW Duke in 2020.


Main Characteristics

Length over all  106.80 m
Length between p.p.  92.10 m
Breadth moulded  19.20 m
Draft  6.50 m
Gross Tonnage  7689 tons
Bollard pull  approx. 210 tons
Speed  18 knots
Accommodation  60 pers + hospital
IMO  9378204