MANEUVERING TRIALS OF THE 278,000 DWT ESSO OSAKA IN SHALLOW AND DEEP WATERS

Maneuvering trials of the 278,000 deadweight ton tanker ESSO OSAKA were made in two shallow water and one deep water sites in the Gulf of Mexico in July and August 1977 as a cooperative effort of the U.S. Government and tanker operators through the American Institute of Merchant Shipping. Objectives included developing information for improving the quality of simulations of maneuvering behavior, for obtaining a better understanding of scale effects, for developing deepwater port safety zones, and on which to base shiphandling maneuvering information. The trials addressed the effects of water depth, ship speed and propeller rpm on turning circles, Z-Maneuvers, stopping, coasting turns, coasting Z-Maneuvers, and accelerating turns. Water current measurements aided correction of the results to a zero current condition. In general, it was found that the ESSO OSAKA as presently constructed could maneuver reliably and predictably under all conditions tested. Beyond the more operational maneuvers, special trials including spiral tests were conducted to provide input data for systems identification research.

  • Supplemental Notes:
    • Marine research program report sponsored in part by the Coast Guard, and the American Institute of Merchant Shipping.
  • Corporate Authors:

    Exxon International Incorporated

    Tanker Department, P.O. Box 101
    Florham Park, NJ  United States  07932

    Maritime Administration

    1200 New Jersey Avenue, SE
    Washington, DC  United States  20590

    United States Coast Guard

    2100 Second Street, SW
    Washington, DC  United States  20593

    American Institute of Merchant Shipping

    1625 K Street, NW, Suite 1000
    Washington, DC  United States  20006
  • Authors:
    • Crane Jr, C L
  • Publication Date: 1979-1

Media Info

  • Pagination: 180 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00199045
  • Record Type: Publication
  • Source Agency: National Technical Information Service
  • Report/Paper Numbers: EII.4TM.79, MA-RD-940-79018
  • Contract Numbers: MA-7-38025
  • Files: NTIS, TRIS, USDOT
  • Created Date: Nov 7 1980 12:00AM