Millimeter 12

Description

The Millimeter 12 (also known as the Millimeter class) is a compact, one-design racing dinghy designed for single-handed sailing, inspired by the classic 12-meter America's Cup yachts of the late 20th century (e.g., Intrepid or Courageous). Developed in 1982 in the San Francisco Bay Area as an improved version of the German Mini-12, it emphasizes agile performance in close-quarters racing over smooth waters, with foot-pedal steering and all controls led to the cockpit for ease of handling. Naval architect Bob Smith refined the original design with a larger rudder, better hardware, and segmented lead ballast in the keel sump for stability, while retaining the narrow beam and scaled proportions for a "fun, affordable" racer. Built by Millimeter Marine (initial molds by Bill Kreysler in San Rafael, CA), over 300 hulls were produced through the 1980s–1990s, fostering a vibrant class with nationals starting in 1985 (e.g., Richardson Bay, CA). At 12.5 feet, it's highly portable (trailerable, often stacked 6–16 per rig), trailerable, and ideal for youth/adult training or club fleets, achieving 5–7 knots in 10–15 knots wind. The class remains active in the Bay Area (e.g., Encinal YC headquarters), with a PHRF-like handicap for mixed racing.