Accession Number : ADA131399

Title :   Prediction of the Swamping Tendencies of Recreational Boats.

Descriptive Note : Final rept. Jun 80-Jan 82,


Personal Author(s) : Openheim,B W ; Nickels,F J

Full Text :

Report Date : Jan 1982

Pagination or Media Count : 371

Abstract : Seven small recreational boats were tested to obtain heave, pitch and relative transom motion RAO curves in regular longitudinal waves. This data was needed to determine the feasibility of making mathematical simulations of swamping tendencies using linear strip theory, and, in a few cases, a 3-D motion theory. The probability of swamping of the boats was calculated for seven sample severe wave conditions. The boats included two jonboats, a dinghy, runabout, skiff dory and a half-scale model of a jonboat, all in a number of asymetric loading conditions. The motions were found to be linear. The strip theory was found to be unsuitable for the boats. The probability of swamping was found to be high indeed. The 3-D theory yielded promising results, but more research is needed to establish its suitability for the boats. (Author)

Descriptors :   *Boats , *Recreation , *Boat and ship accidents , *Mathematical models , *Mathematical prediction , Payload , Heaving , Pitch(Motion) , Ship motion , Water , Filling , Sinking , Probability , Safety , Response , Amplitude , Operators(Mathematics) , Water waves , Curve fitting , Linearity , Theory , Test methods , Tanks(Containers) , Tables(Data)

Subject Categories : Statistics and Probability
      Marine Engineering
      Safety Engineering

Distribution Statement : APPROVED FOR PUBLIC RELEASE