DIRECTORY OF MARINE DRILLING RIGS--1978-79

The mobile marine drilling rig fleet has shown substantial increases in the number of vessels since the lst annual survey in September 1977. This year the figures reflect a total of 463 vessels in existence and under construction, an increase of 24 units. However, this increase contradicts actual new construction figures. In fact, some 54 units are currently in various stages of construction around the world and 41 new units have been added to this years's directory. The reason the overall worldwide rig fleet count does not reflect this strong increase is that contractors removed 17 older units from the existing fleet. Nine vessels in the drillship and barge class and seven jack-ups were removed from service over the past 12 months. Six of the 17 units have been converted to production platforms. A look at the statistics. Of the 463 rigs listed, 26 are submersibles, 86 are drillships and barges, 125 are semi-submersibles and 226 are jack-ups. Of these 463 units, 54 are under construction. This new rig fleet is made up of 43 jack-ups, 4 drillships and barges, 5 semi-submersibles and 2 submersibles. Directory lists submersibles, drillships and barges, semi-submersibles and Jack-up rigs.

  • Corporate Authors:

    Gulf Publishing Company

    Box 2608
    Houston, TX  United States  77001
  • Authors:
    • Tubb, M
  • Publication Date: 1978-9

Media Info

  • Pagination: p. 35-164
  • Serial:
    • Ocean Industry
    • Volume: 13
    • Issue Number: 9
    • Publisher: Gulf Publishing Company

Subject/Index Terms

Filing Info

  • Accession Number: 00183192
  • Record Type: Publication
  • Source Agency: Gulf Publishing Company
  • Files: TRIS
  • Created Date: Oct 31 1978 12:00AM