The Authors describe an experimental investigation on local wind distributions over decks and superstructures, including such parts as masts and antennae. The experiments were conducted with three ship-models at the Gottingen-type wind-tunnel of the Disaster Prevention Research Insitute, Kyoto University, and were made in the interests of the safety of passengers and deck cargoes and for establishing design rules for the affected parts of the ship. The models used were those of two car ferries (6,000 and 13,000 gross tons repsectively) and a cargo ship (12,550 g. tons). The experimental techniques are outlined, and the results, which include wind-speed and turbulence distributions for different relative wind directions, are shown diagrammatically and discussed. Among the conclusions, it is stated that wind characteristics are affected by the ship up to the top of the masts (wind measurements for weather observations are best taken at the top of the foremast, with the wind ahead). In oblique and beam winds, the experiments show that the wind is disturbed even at the top of the mast. Some parts of the ship which are particularly susceptible to wind effects are mentioned, and special care should be taken at these positions for the safety of passengers and deck cargoes and fittings. Order from: BSRA as No. 46,209.

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  • Accession Number: 00165250
  • Record Type: Publication
  • Source Agency: British Ship Research Association
  • Files: TRIS
  • Created Date: Dec 27 1977 12:00AM