THE SCOURING ACTION OF THE PROPELLER JET PRODUCED BY A SLOWLY MANOEUVRING SHIP

The action of the jet produced by the propellers of a ship slowly maneuvering in shallow waters often results in the scouring of the bed material. Near a quay, for example, frequent exposure to this kind of jet can undermine the quay, leading to structural instability and eventual failure. With the advent of very large ships, the proliferation of ro/ro ferries, and increases in installed engine power, the magnitude and occurrence of scour- related problems have increased. This article examines them in relation to a specific, but typical, location, namely, at the main ferry terminal at Larne Harbor, 20 miles northeast of Belfast, Ireland. The investigation described achieved its purpose of deriving a mathematical expression for the rate of development of propeller scour. The equation can be used when medium- to coarse- grain sand is involved. Its use on fine sand or gravel would require further verification.

  • Availability:
  • Supplemental Notes:
    • Journal article
  • Authors:
    • Hamill, G A
  • Publication Date: 1988

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00656212
  • Record Type: Publication
  • Source Agency: Maritime Technical Information Facility
  • Files: TRIS
  • Created Date: Jul 21 1994 12:00AM