Page "Clinker (boat building)" Paragraph 15
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Wikipedia
Swivel or crutch chocks are fitted as appropriate to the gunwale, the thwarts fitted down onto the rising and held in position by knees up to the gunwale and perhaps down onto the stringer.
The structure of gunwale, rising, thwart and thwart knees greatly stiffens and strengthens the shell and turns it into a boat.
There are several ways of fixing the rubbing strake but in a clinker boat, it is applied to the outside of the sheer strake.
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