A block of a wood such as lignum vitae, usually circular but sometimes triangular in early ships. It has a single D-shaped hole in the centre and is grooved around its circumference to take standing rigging. The straight side of the D is usually scored for three lanyards. Hearts are usually used in pairs and in the manner of deadeyes for setting up the stays of sailing ships. They are set up with a tackle and the running end seized. Modern sailing ships use rigging screws for this purpose.
Subjects: Maritime History.