Hmmm, not really sure.
I don't recall Peter Pig making stuff like that, other than cannons and crews.
I'd suggest looking for 1/100th, or HO scale Age of Sail naval vessel parts from wooden ship builders suppliers.
Sorry, don't know of any off hand, but they are out there and can provide those, and more than you need, e.g. ship's boats, stacks of cannon balls, anchors, wheels, bells, etc., etc..