SCHILLING RUDDER DEVELOPMENTS

The Author, of Industramar Ltd, discusses some developments of the Schilling rudder, and in particular arrangements with two of these rudders. This unconventional rudder, which incorporates slipstream guide-plates, has a special profile, and permits very large rudder-angles to be used to divert the propeller slipstream. The Schilling rudder was originally developed for inland-waterways vessels, but very satisfactory experience with 1,200-dwt seagoing cargo ships has led to its being specified for further seagoing ships of about this size which are to be built in the U.K. in 1978, and fitment to ships of up 4,000 tons is under consideration. A range of equipment is available from steering-gear manufactureres to meet the rudder-angle requirements. With the Schilling rudder, effective steering can be maintained at low speeds and is not significantly impaired by shallow water. Twin rudder systems are available with independent movement for each rudder; thrust can be directed in any direction, and by turning each rudder outboard the slipstream can be reversed to give an astern thrust of about 40% the ahead bollard-pull. Stopping power is much greater than that obtainable by reversing a propeller. By "differential" angling of the two rudders, the ship's stern can be pushed in any direstion. The two rudders can have a co-ordinated control system with one-lever control by a joystick; alternatively, the thrust and its direction can each have a separate control (both arrangements are non-electronic). The addition of a transverse bow-thruster would enable dynamic positioning to be achieved. Order from BSRA as No. 47,696.

• Supplemental Notes:
  • Conference on Shiphandling, held in Plymouth, November, 1977.
• Corporate Authors:

  Nautical Institute

  Alderman's House, Alderman's Walk
  London EC2M 3UU,   England 
• Authors:
  • BINGHAM, V P
• Publication Date: 1977

Media Info

• Pagination: 8 p.

Subject/Index Terms

• TRT Terms: Bow thrusters; Dynamic positioning; Maneuvering; Performance; Rudders; Steering; Steering components; Stopping; Vehicle design
• Old TRIS Terms: Shallow water maneuvering; Steering efficiency; Steering equipment; Stopping characteristics; Twin rudders
• Subject Areas: Design; Marine Transportation; Vehicles and Equipment;

Filing Info

• Accession Number: 00173664
• Record Type: Publication
• Source Agency: British Ship Research Association
• Files: TRIS
• Created Date: Apr 26 1978 12:00AM