HYDROSTATIC STERN GEAR

Figures presented periodically by Classification Societies show a major cause of ship casualty to be stern bearing failure. This is particularly the case for large full-bodied bulk carriers and tankers. Non-uniform wake distributions around the stern of vessels causes uneven and constantly varying loads upon the bearing. These loads are examined and it is concluded that they may cause bearing or seal failures. Examination of stern bearing failures generally confirms this view. Examination of the loading pattern and requirements of stern gear are listed and, based upon these, it is argued that stern bearing reliability will be increased if hydrostatic stern bearings are used. Design curves to a basis of shaft diameter are presented to enable clearance, pressure, lubricant flow, stiffness and basic dimensions to be derived by simple calculation. Material suggestions are made and outline designs for oil and water lubricated bearings presented.

• Corporate Authors:

  North East Coast Inst of Engineers & Shipbuilders

  Bolbec Hall, Westgate Road
  Newcastle upon Tyne,   England 
• Authors:
  • Rose, A
• Publication Date: 1974-3

Media Info

• Features: References;
• Pagination: p. 97-110
• Serial:
  • North East Coast Inst of Eng & Shipbuilders Trans
  • Volume: 90
  • Issue Number: 4
  • Publisher: North East Coast Inst of Engineers & Shipbuilders

Subject/Index Terms

• TRT Terms: Bearing capacity; Bearings; Casualties; Fatalities; Sterns; Water transportation crashes
• Old TRIS Terms: Bearing loads; Casualty data; Ship casualties; Stern bearings; Stern tube bearings
• Subject Areas: Marine Transportation; Vehicles and Equipment;

Filing Info

• Accession Number: 00057313
• Record Type: Publication
• Source Agency: Engineering Index
• Files: TRIS
• Created Date: Aug 28 1974 12:00AM