VLCCS APPROACHING HARBOURS: STOPPING, TOWING, SHIP MOTIONS, SQUAT

The development trend of the very large crude carriers (VLCC) that are increasing in numbers is outlined. Handling of such ships in harbors is discussed. Calculation methods are described allowing the amplitudes of ship motions to be ascertained on a basis of sea sepectra. These calculations are carried out for a 225,000 tons tanker. Recently model tests were carried out to ascertain the squat of VLCCs in shallow water: this squat is known with a tolerable certainty for the 225,000 tons tanker proceeding at a speed of about 10 knots in shallow water of 25 m depth.

• Supplemental Notes:
  • International Harbour Congress, 6th Proceeding, Antwerp, Belgium, May 12-18, 1974 Sect 2, Paper 27.
• Corporate Authors:

  Koninklijke Vlaamse Ingenieurs-Vereniging Ing

  Jan van Rijswijcklaan 58
  Antwerp 1,   Belgium 
• Authors:
  • Aertssen, G
• Publication Date: 1974-5

Media Info

• Features: References;
• Pagination: 8 p.

Subject/Index Terms

• TRT Terms: Maneuverability; Maneuvering; Ship motion; Ship pilotage; Tankers; Very large crude carriers
• Uncontrolled Terms: Squat
• Old TRIS Terms: Restricted water operation; Shallow water maneuvering; Tanker maneuvering
• Subject Areas: Marine Transportation; Safety and Human Factors; Vehicles and Equipment;

Filing Info

• Accession Number: 00098255
• Record Type: Publication
• Source Agency: Engineering Index
• Report/Paper Numbers: Sect 2, Paper 27 Proceeding
• Files: TRIS
• Created Date: Aug 13 1975 12:00AM