Adjective
Rigged like a ship, that is, having three masts, each with square sails.
Source: Webster's dictionaryCruizer-class brig-sloops did not fare well against the American ship-rigged sloops of war. Source: Internet
The British brig-rigged sloops tended to suffer fire to their rigging more frequently than the American ship-rigged sloops. Source: Internet