We use thorl pins in wooden boat
s instead of rowlocks where the wood attached to the oar has a hole and the wooden
counter balances the weight
of the length of the oar. interesting to know the connection with belaying pins and the quick release of the shrouds by knocking them out.
Thole \Thole\, n. [Written also thowel, and thowl.] [OE. thol, AS. [thorn]ol; akin to D. dol, Icel. [thorn]ollr a fir tree, a young fir, a tree, a thole.]
or metal pin, set in the gunwale of a boat, to serve as a fulcrum for the oar in rowing.