THE BEHAVIOUR OF SHIPS IN CONFUSED SEA; THE LONGITUDINAL WAVE BENDING MOMENT

IL COMPORTAMENTO DELLE NAVI IN MARE TEMPESTOSO; MOMENTO FLETTENTE LONGITUDINALE DOVUTO AL MOTO ONDOSO

Results of a systematic calculation on the behaviour of ships in confused area are presented. This calculation is based upon theories introduced in technical bulletins number 4 and 7 of Registro Italiano Navale. By means of the power spectral density function method and superposition, the highest expected wave bending moment in 10,000 cycles is found for a ship crossing with head sea, a fetch of short-crested irregular sea (wind speed = 60 knots). Ship characteristics are systematically varied to determine their influence on the wave bending moment. The calculation procedure, suggested by Webb Institute of Naval Architecture, was adapted for use on an electronic computer. The FORTRAN program is provided in Appendix 2. In Italian

• Corporate Authors:

  Registro Italiano Navale

  20 Via Vente Settembre
  Genoa,   Italy 
• Authors:
  • Merega, F
• Publication Date: 1966-7

Media Info

• Features: Appendices; Figures; References; Tables;
• Pagination: 72 p.
• Serial:
  • Issue Number: 8

Subject/Index Terms

• TRT Terms: Electromagnetic spectrum; Power spectra; Ship motion; Waves
• Old TRIS Terms: Irregular waves
• Subject Areas: Marine Transportation; Vehicles and Equipment;

Filing Info

• Accession Number: 00019317
• Record Type: Publication
• Source Agency: Registro Italiano Navale
• Report/Paper Numbers: Tech Rpt
• Files: TRIS
• Created Date: Nov 8 1971 12:00AM