A Simple Method for Predicting the Maximum Squat of a High-Speed Displacement Ship

Author: Gourlay, Tim

Source: Marine Technology, Volume 43, Number 3, July 2006 , pp. 146-151(6)

Publisher: Society of Naval Architects and Marine Engineers (SNAME)

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Abstract:

A simple formula is developed for predicting the maximum squat of a displacement ship as it passes through the transcritical speed range. This is given in terms of a maximum sinkage coefficient, which is almost constant across a wide range of hull forms. Satisfactory agreement is shown with model test results, and it is shown that large stern sinkages in the order of 3 to 6 meters are predicted for frigate and destroyer type hulls in shallow calm water.

Document Type: Research article

Publication date: 2006-07-01

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Marine Technology is dedicated to James Kennedy, 1867-1936, marine engineer, and longtime member of the Society, in recognition and appreciation of his sincere and generous interest in furthering the art of ship design, shipbuilding, ship operation, and related activities.

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