THE LOAD-ON-TOP SYSTEM FOR CRUDE OIL TANKERS--EXPERIENCE AND POSSIBLE DESIGN IMPROVEMENTS

A study of the operation of crude oil tankers was initiated by Norwegian shipowners and shipbuilders in 1971. Great emphasis was placed on the development of a more efficient and thereby less polluting load-on-top system. In order to investigate the various factors and parameters that influence the efficiency of the load-on-top system, samples were taken on board a number of crude oil carriers during normal operating conditions. The results have proven that pollution convention requirements can be fulfilled by careful operation of today's equipment. In addition, a model of a cargo tanker cross section was used to investigate the influence of various design parameters. Based on information from model tests and experience from tankers in service, an improved arrangement for applying the load-on-top method has been proposed. Further studies have been outlined in an effort to establish criteria for the design of cargo handling and oily water discharge equipment for modern crude oil tankers.

• Supplemental Notes:
  • Presented at the SNAME Annual Meeting, New York, N.Y., Nov. 14-16, 1974.
• Corporate Authors:

  Society of Naval Architects and Marine Engineers

  601 Pavonia Avenue
  Jersey City, NJ  United States  07306-2907
• Authors:
  • Overaas, S
  • Solum, E
• Publication Date: 1974-11

Media Info

• Features: References;
• Pagination: 7 p.
• Serial:
  • Issue Number: 11

Subject/Index Terms

• TRT Terms: Cleaning; Intermodal transfer; Petroleum; Ship operations; Storage tanks; Tankers; Waste disposal
• Old TRIS Terms: Oil transfer operations; Oily ballast disposal; Tank cleaning; Tanker operations
• Subject Areas: Environment; Freight Transportation; Geotechnology; Maintenance and Preservation; Marine Transportation;

Filing Info

• Accession Number: 00071650
• Record Type: Publication
• Source Agency: Society of Naval Architects and Marine Engineers
• Files: TRIS
• Created Date: Nov 12 1974 12:00AM