Knee chain bitt mooring from USS Constitution. Note the difference in stress wave transmission time and values of 260 microseconds observed in sound wood. Deteriorated wood yielded values in excess of 600 microseconds.

Figure 5 - Knee chain bitt mooring from USS Constitution. Note the difference in stress wave transmission time and values of 260 microseconds observed in sound wood. Deteriorated wood yielded values in excess of 600 microseconds.

 

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