Glossary icon


Double Reef Topsails

The "topsail" on a square-rigged vessel is the sail directly above the lowest sail on a mast. To "reef" means to partially lower a sail so that it is not as large. This helps prevent too much sail from being in use when the wind gets stronger. When the topsails are "double-reefed" the waters are getting rougher.

JavaScript required access all features of this site. Use Browser Back to return.