Third-generation containerships are shorter, slower, and fuller ships, but their overall container-carrying capability remains the same. This group is split into two distinctive designs: those retaining the semi-balanced rudder concept and a minority having a simple skeg rudder arrangement. During a recent passage through the Suez, one of the first group ran aground, and it is reported that other ships of this same group have also been involved in tight situations. By contrast, ships having a large skeg rudder design have reported no such problems. To ships of the first group, a short skeg has been added forward of the rudder to improve directional stability, particularly straight-line stability: but still there remains the problem of low water flow over the rudder at slow speed. The latter design, although increasing frictional resistance at high speed and requiring a steering gear as much as three times the size of its counterparts, enables vessels to maneuver with extreme accuracy and reliability at low speed, owing to the large rudder being able to swing right across the propeller race, maximizing the effect of the increase in propeller revolutions.

  • Corporate Authors:

    IPC Industrial Press Limited

    Dorset House, Stamford Street
    London SE1 9LU,   England 
  • Publication Date: 1978-5

Media Info

  • Pagination: p. 30
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00189275
  • Record Type: Publication
  • Source Agency: Israel Shipping Research Institute
  • Files: TRIS
  • Created Date: Mar 28 1979 12:00AM