What is "shotholes"

Usage examples of "shotholes".

The carpenter had only four shotholes and eight inches of water in the well: Fellowes gave an account of a fair amount of damage to the sails and rigging forward.

There was the swaying up of the new yard, too, some shotholes to be repaired and the bowsprit to be new gammoned, for the strangest grazing ricochet had cut half the turns without ever touching the wood - something the oldest seamen aboard had never yet beheld, a wonder to be recorded in the log.