Dictionary of Ichthyology  

anchor = a metal device lowered on a line or chain and used to secure a vessel to the sea bed. Also used to secure nets. Anchors have flukes (points that dig into the bottom or grab rocks; the flattened part is called a palm) connecting by arms to a crown, a shank (a vertical bar) rising from the crown, many also have a stock (a horizontal bar that prevents rolling over) which passes through an eye, and a ring (where the rope or chain is attached). There are many different type and sizes of anchors, e.g. see killick, Admiralty pattern anchor, ice anchor and trawl anchor.

Eastern Passage, Halifax, September 2004. Photograph by Brian W. Coad.....more

Canadian Museum of Nature