Stockless anchor
A stockless anchor (or "patent anchor") is a streamlined derivation of the traditional Admiralty anchor used aboard large ships. Patented in England in 1821, it eliminated the stock (crossbar) of the Admiralty-type, making it both easier to handle and stow. Though it did not hold as well as an Admiralty, the trade-off proved acceptable and the stockless anchor became widely popular, and it remains so.