Admiralty Anchor has a long history, it is a stock anchor that is particularly suitable for seabed environments such as sand, hard mud, and gravel. There is a crossbar perpendicular to the anchor shank at the anchor shank under the shackle of the Admiralty Anchor. The crossbar allows the Admiralty Anchor's anchor flukes to penetrate deep into the seabed, and the crossbar also prevents the anchor from flipping, effectively avoiding the phenomenon of anchor deviation. However, the crossbar and unilateral anchor fluke of the Admiralty Anchor are still exposed on the seabed after anchoring, which makes it easy for it to entangle with the anchor chain and easily damage the hull, also making it very inconvenient to retract and release the anchor.