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File:Gooseneck Swivel Connection On A Yacht.jpg
A gooseneck swivel connection holding the boom to the mast on a typical small yacht.

The gooseneck is the swivel connection on a sailboat by which the boom attaches to the mast. The boom moves from side to side and up and down by swiveling on the gooseneck.

The gooseneck may be a two axis swivel as pictured. Having an integrated shackle for the tack is common. Goosenecks on older rigs may be formed by a loop attached to the end of the boom that fits loosely about the mast.

de:Lümmelbeschlag fr:Vit-de-mulet it:Trozza