swingmast

Swingmast is a type of sailing rig in which the mast is mounted on a hinge or pivot at the deck, allowing it to be swung or rotated between a vertical sailing position and a lowered or horizontal position. This arrangement enables easier storage, and can simplify mast raising and lowering on small craft. Depending on the design, the mast may swing to either side or lie along the deck, and is typically supported by stays when raised.

Operation often involves a mechanical or hydraulic actuator, lines, or a crank that releases a locking mechanism, enabling controlled rotation. Safety devices and redundant supports are common, since the mast carries substantial sailing loads through the hinge. Proper deck structure and reinforcement are important to handle the dynamic forces transmitted during rotation and sailing.

Applications and variants: Swingmasts are used on some canal boats, certain small sailing dinghies, and various traditional or experimental vessels. They are chosen to reduce storage height and windage, or to facilitate handling on boats without a dedicated mast-raising system. In some designs, the mast can be swung to the side to lie along the cockpit for maintenance or transport.

Advantages and limitations: The main advantages are reduced storage height, easier mast handling, and potentially lower windage when the mast is lowered. Limitations include added mechanical complexity, potential structural stress at the hinge, and higher maintenance requirements. Swingmasts represent a niche solution for vessels requiring flexible mast management while balancing sailing performance.