This unusually complete paper clearly and simply explains the mechanism by which the bulbous bow reduces drag on fullform tankers in ballast condition. The Bulletin compares the results of a number of model tests conducted to determine an average reduction in resistance due to the addition of a bow bulb with full-scale operational powering data on a number of ships collected prior to their drydocking for the addition of a bow bulb, and similar data collected from the ships after their conversion. In addition, parameters for effective bow bulb design are indicated as well as data on their sensitivity to weather conditions and their overall economic significance.

  • Supplemental Notes:
    • Translated for Panel H-5 (Analytical Ship Wave Relations) of Hydrodynamics Committee.
  • Corporate Authors:

    Society of Naval Architects and Marine Engineers

    601 Pavonia Avenue
    Jersey City, NJ  United States  07306-2907
  • Authors:
    • Eckert, E
    • Sharma, S D
  • Publication Date: 1973-5

Media Info

  • Features: References;
  • Pagination: 67 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00050228
  • Record Type: Publication
  • Source Agency: Society of Naval Architects and Marine Engineers
  • Report/Paper Numbers: T&R Bulletin 1-33
  • Files: TRIS
  • Created Date: Nov 14 1973 12:00AM