AN INVESTIGATION INTO SAFETY OF PASSAGE OF LARGE TANKERS IN THE PUGET SOUND AREA--A SUPPLEMENTARY STUDY
The first phase of the study was conducted in 1977 at the Compuer Aided Operations Research Facility to investigate the safety of passage of tankers through the Puget Sound area under maximum credible adverse environmental conditions. The track-keeping results of that phase indicated that all ships were able to navigate safely under the extreme environmental conditions provided they maintained sufficient speed. The failed equipment runs indicated that tug support of ships was required to avoid grounding after suffering steering/propulsion failures. This supplementary study provides data on the transfer and advance of a 400K DWT tanker after a combined steering/propulsion failure under the same conditions as the earlier study. A formula relating tug force to ship tonnage was developed from data derived from the earlier study; computer runs in this study validated that formula. In addition, this supplementary study investigated the use of a rudder tug to control speed and heading of 120K, 165K, and 280K tankers.
National Maritime Research Center, Kings PointUnited States Merchant Marine Academy
Kings Point, NY USA 11024
United States Coast GuardOffice of Marine Environment and Systems
Washington, DC USA 20590
- Mcilroy, W
- Publication Date: 1980-5
- Pagination: 35 p.
- TRT Terms: Emergencies; Maneuvering; Mechanical failure; Ship simulators; Steering; Tankers; Tug ship interaction
- Old TRIS Terms: Emergency steering; Restricted water operation; Steering failure; Tanker maneuvering
- Subject Areas: Marine Transportation; Vehicles and Equipment;
- Accession Number: 00323326
- Record Type: Publication
- Report/Paper Numbers: CAORF 42-7703-01S Tech Rpt.
- Contract Numbers: MIPR Z 700998843822
- Files: TRIS
- Created Date: Feb 6 1981 12:00AM