After a general discussion on the characteristics required in modern ship-handling tugs, including those which handle large floating bodies such as drilling-rigs, the Author (of Schottel-Nederland B.V.) examines how these requirements can be met, in particular with the aid of cycloidal propellers and rudder-propellers. These devices can be installed in the forebody, a position which reduces the chance of girting and has other advantages. The advantages of tractor tugs (tugs with cycloidal propellers or rudder-propellers in this forward position) are then discussed more fully, with particular reference to tugs with Schottel rudder-propellers. In Hamburg, three tug-owners operate, or have on order, 15 Schottel tractor-tugs, with bollard pulls ranging from 27 to 35 tons. Order from: BSRA as No. 47,634.

  • Supplemental Notes:
    • Presented at the Conference on Shipbuilding, Plymouth, November 1977.
  • Corporate Authors:

    Nautical Institute

    Alderman's House, Alderman's Walk
    London EC2M 3UU,   England 
  • Authors:
    • Bussemaker, O
  • Publication Date: 1977

Media Info

  • Features: References;
  • Pagination: 12 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00173649
  • Record Type: Publication
  • Source Agency: British Ship Research Association
  • Report/Paper Numbers: Proceeding
  • Files: TRIS
  • Created Date: Apr 26 1978 12:00AM