If you mean the net-like rope work of the shrouds, the ones that are put in place for rapid ascent/descent to/from mast/yardarms, they are called "ratlines".
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sail boats
boats
Not as a general rule. Though they may have produced some.
There was an order sent out to all owners of small boats to sail to France to rescue soldiers from Dunkirk
the circumference of the earth, the oceans, and his boats