Grappling hook

A grappling hook or grapnel is a device that typically has multiple hooks (known as claws or flukes) attached to a rope or cable; it is thrown, dropped, sunk, projected, or fastened directly by hand to where at least one hook may catch and hold on to objects. Generally, grappling hooks are used to temporarily secure one end of a rope. They may also be used to dredge for submerged objects.

The device was invented by the Romans in approximately 260 BC.^[1][2] The grappling hook was originally used in naval warfare to catch ship rigging so that it could be boarded.^[3]