Catamaran

A catamaran is a multihull watercraft consisting of two parallel hulls of equal length linked by a transverse bridge deck structure. Unlike traditional monohull yachts that rely on a heavy ballasted keel for righting moment, a catamaran achieves its initial stability through form stability provided by the wide stance of its hulls. According to historical records cited on Wikipedia, catamarans were originally developed by Austronesian peoples, enabling extensive transoceanic navigation across the Pacific and Indian Oceans.

In modern recreational sailing, cruising catamarans typically range in overall length (LOA) from 35 to 60 feet (10.6–18.3 m), with a total beam measuring roughly 50% to 60% of their length. This structural geometry allows for minimal heel angles (rarely exceeding 5° to 8° under sail), a shallow draft ranging between 0.9 m and 1.5 m (3.0–5.0 ft) when daggerboards are raised, and expansive living space. When evaluating catamaran or monohull options, sailors value this stability alongside low hydrodynamic resistance, which directly impacts overall catamaran speed.

It is essential to distinguish cruising sailing catamarans from homonymous terms such as small beach cats, pedal boats, or high-speed commercial ferries. Due to the absence of a ballasted keel and higher aerodynamic windage from the bridge deck, tacking a catamaran requires maintaining momentum and proper headsail backing techniques.