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The gooseneck pivots allowing the other end of the boom to move freely. The clew (back corner) of the sail attaches to the free end of the boom. The entire foot of the sail may be attached to the boom or just the clew. If the foot is not attached to the boom, the rig is known as loose footed. A boom may be found on small headsails.
Foot – The foot of a sail is its bottom edge. [8] On a fore-and-aft mainsail, the foot is often attached, at the tack and clew, to a boom; on a square sail to a spar by clews on both ends; if no boom or spar is present, the sail is said to be "loose-footed". [9]
Edges: Luff Head Leech Foot Corners: Tack Throat Peak Clew Diagram of a four-cornered spritsail. The spritsail is a four-sided, fore-and-aft sail that is supported at its highest points by the mast and a diagonally running spar known as the sprit. The foot of the sail can be stretched by a boom or held loose-footed just by its sheets.
The Astus 16.1 is equipped with a rotating mast without spreaders. The main sail is loose-footed (no boom). Sails: The Astus 16.1 is equipped with a dacron furling jib and dacron mainsail as standard. The mainsail is fully battened and has one reef as standard, and a second reef can be specified as a factory option.
The foot of a Bermuda sail may be attached to the boom along its length, or in some modern rigs the sail is attached to the boom only at its ends. This modern variation of a Bermuda mainsail is known as a loose-footed main. In some early Bermudian vessels, the mainsails were attached only to the mast and deck, lacking booms.
For sailing the design is equipped with a self-tacking Hoyt jib boom system and a roller furling jib. The loose-footed mainsail is full-battened and stowed on the boom with standard lazy jacks. All lines are led under the foredeck and cleated on a "control panel" shelf aft of the boat's mast on the cuddy cabin.
For sailing the design is equipped with a rotating mast that allows reefing the loose-footed sail about the mast. It also has a unique, patented, L-shaped boom that mounts into the deck just behind the mast, acting as a boom vang. The boom design allows easy reefing of the sail. [3] It has a hull speed of 5.6 kn (10.4 km/h). [3]
A mainsail is a sail rigged on the main mast of a sailing vessel. [1] On a square rigged vessel, it is the lowest and largest sail on the main mast. On a fore-and-aft rigged vessel, it is the sail rigged aft of the main mast. The sail's foot is normally attached to a boom. [1]