The oil terminal offshore Tomakomai, Japan, is the world's first fixed dock in open ocean. It must withstand 150 mph typhoon winds. To minimize time, cost and danger of open ocean work on steel jackets, the key is speedy driving of the piles that hold them in place. Jack-up rigs can safely operate more days a month than floating pile drivers. So here a jackup was used, but with a difference the job-built rig, has a large open well in its center, under which the jacket is centered to speed pile driving. A large cellular cylindrical fender was developed that absorbs impact of berthing ships, reduces by 33% the force exerted by tankers up to 280,000 deadweight tons.

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Filing Info

  • Accession Number: 00147851
  • Record Type: Publication
  • Source Agency: Engineering Index
  • Files: TRIS
  • Created Date: Feb 16 1977 12:00AM