THE EFFECT OF PROPELLER WAKE ON THE TOWING OF LARGE STRUCTURES

The force exerted on a towed structure can in some cases be double that of the propeller thrust force involved. This article describes the forces which act upon different bodies at various distances abaft the towing vehicle and the way velocity distribution in propeller wake changes with these varying distances. It is concluded that the forces acting here are far greater than had previously been reckoned with, and are dependent upon the length of the tow rope used and the geometry of the structure under tow. Model tests with properly scaled propeller wake will provide useful data in finding the ideal configuration for tugs engaged in offshore towing operations. Order from: BSRA as No. 46,677.

• Corporate Authors:

  Ship Research Institute of Norway

  P.O. Box 4125, Valentinlyst, Hakon Hakonsongt. 34
  N-7001 Trondheim,   Norway 
• Authors:
  • Nielsen, F G
• Publication Date: 1977-4

Language

• Norwegian

Media Info

• Pagination: 2 p.
• Serial:
  • Volume: 1

Subject/Index Terms

• TRT Terms: Force; Propellers; Ship operations; Towing devices; Tugboats; Wakes
• Old TRIS Terms: Model testing; Propeller forces; Propeller wake; Towed bodies; Towing operations; Tug operations
• Subject Areas: Marine Transportation; Vehicles and Equipment;

Filing Info

• Accession Number: 00170547
• Record Type: Publication
• Source Agency: British Ship Research Association
• Files: TRIS
• Created Date: Mar 7 1978 12:00AM