ICEGOING DRILLSHIPS

Rauma-Repola Oy is to build the world's first dynamically positioned icegoing drillships to a Dutch design for a Soviet customer. As part of the design criteria, it was laid down that the environment should not prohibit operation within certain limits. The ship should be capable of working in iceberg areas, or tropical seas and should be able to maintain station in winds of 45 kt, gusting to 65 kt; current velocities up to 2 kt, and a mean wave height of 4.5 m (significant) and mean wave period of 12s. The vessels are propelled by two controllable pitch propellers running at constant speed. Three drillships will be built for the Soviet Union based on the Pelican design of the Dutch firm IHC-Gusto and adapted to specific customer requirements for operation in Arctic conditions. They will be built to ice class UL1, the first drilling units to have this specification, which will enable them to operate independently in ice sludge and to work in solid ice when towed by an icebreaker. Drilling will be possible in depths of up to 600 m and in temperatures down to -40 deg C. Main dimensions for the Pelican class are: Length 149.4m, Beam 24.0m, Speed 13 knots, Deadweight 7000 tonnes, Depth to main deck 12.5 m, Maximum draught 12.5 m.

  • Availability:
  • Corporate Authors:

    Design Council

    29 Haymarket
    London SW14 4SU,   England 
  • Publication Date: 1979-11

Media Info

  • Pagination: p. 1460
  • Serial:
    • ENGINEERING
    • Volume: 219
    • Issue Number: 11
    • Publisher: GILLARD WELCH LIMITED
    • ISSN: 0013-7782

Subject/Index Terms

Filing Info

  • Accession Number: 00303352
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Feb 11 1980 12:00AM