FREE-RUNNING TURNING TESTS OF A NEW DISPLACEMENT-TYPE HIGH SPEED SEMI-SUBMERSIBLE SHIP WITH WINGS

The ship studied in this paper is a new displacement-type high speed ship equipped with wings which make the hull semi- submerged to realize the expected speed within a moderate power. The expected design speed and displacement volume are assumed to be 50kt and 3000tons respectively. It has been confirmed by experiments carried out so far that the required EHP is about 40000hp and that the neutral stability can be realized even among waves by active control of flaps, ailerons and elevator. In this paper, a submergence depth control is introduced and free-running tests are described. The depth control is realized by changing the trim of the hull actively. It made all the motions steady making it as important as other controls; the hull submerged smoothly and faster and the submergence depth was constant even during the turning motion. Through the study, it is confirmed that all the motions of the new displacement-type high speed ship can be perfectly controlled actively by flaps, ailerons and elevators.

• Supplemental Notes:
  • FAST '95, 3rd Intl Conf on Fast Sea Transportation, 25-27 Sept 1995; Lubeck-Travemunde, Germany. Procs. Ed by C.F.L. Kruppa. Publ by Schiffbautechnische Gesellschaft, Germany. Vol 1, p 587 [10 p, 9 ref, 1 tab, 13 fig]
• Authors:
  • Mori
  • K-h
  • Ninomiya, S
• Publication Date: 1995

Language

• English

Subject/Index Terms

• TRT Terms: Semisubmersibles
• Uncontrolled Terms: High speed vessels
• Old TRIS Terms: Displacement hulls; Free running models; Semisubmersible vessels; Turning manoeuvres
• Subject Areas: Marine Transportation; Vehicles and Equipment;

Filing Info

• Accession Number: 00733277
• Record Type: Publication
• Source Agency: British Maritime Technology
• Files: TRIS
• Created Date: Mar 27 1997 12:00AM