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Monohull

A vessel built on a single hull — the traditional design for most yachts, sailboats, and powerboats.

A monohull is a vessel built on a single hull, as opposed to a catamaran (two hulls) or trimaran (three hulls). Monohulls are the most common vessel design and include nearly all sportfish, center consoles, motor yachts, and traditional sailboats.

Monohull hull shapes vary widely: planing, semi-displacement, full-displacement, and multi-chine designs are all monohulls. Compared to a catamaran of similar length, a monohull has: - Deeper draft and less stable motion at anchor. - Less interior volume and deck space. - Generally better upwind sailing performance (for sailboats). - Simpler, lower-cost construction and maintenance.

For charters, the monohull-vs-catamaran decision typically comes down to passenger comfort (catamarans win), docking cost (monohulls win), and sailing performance (monohulls win upwind).

Examples

  • A 50-foot center console sportfish is a planing monohull.
  • A classic 42-foot sailing yacht with a fin keel is a displacement monohull.

Related Terms

Catamaran—A multi-hull vessel with two parallel hulls connected by a bridgedeck, valued for stability and interior space.Sailing Yacht—A yacht propelled primarily by sail, typically with auxiliary engine power for maneuvering and calm-wind passages.Motor Yacht—A yacht propelled by engine, typically purpose-built for comfort, speed, and amenities rather than sailing performance.Sport Fishing—Recreational offshore fishing, typically for billfish, tuna, or other game species, often conducted as a charter.

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