monohull

/ˈmɑnəˌhʌl/
noun
  1. A boat or ship with a single hull, as opposed to a catamaran or multihull.
    • He preferred a monohull for its better upwind performance in races.
    • The monohull design is stable and efficient for long ocean voyages.
    • Most traditional sailboats are monohulls, with a single deep keel.
Antonyms
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