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curdmudgeon

Posted 6/17/2012 1:43 PM (#565742)
Subject: Handling Dangerous waves: hull length and boat construction

Posts: 123

How does one determine the limitations of a boat hull to handle various wave heights, periods, and steepness? I located a rule of thumb:
• Adlard Coles’ Heavy Weather Sailing by Peter Bruce, “During the model tests that were carried out to investigate the problem, when the breaking wave was 30 percent of the hull length high, from trough to crest, it could capsize some yachts, while waves to a height of 60 percent of the hull length comfortably overwhelm all of the boats we tested.”

Various hull design elements may significantly alter the wave height danger threshold of 30% boat length, for example, transom height and deadrise angle (deep V, modified V, flat bottom).

Is there a way for a Musky fisherman interested in big-water fishing to quantify the wave parameters a particular hull can handle? Wave height and wave steepness seem to be the most important variables. Could this be boiled down to rating number(s).

Edited by curdmudgeon 6/17/2012 1:45 PM