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Grappling hook

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Grappling hook AI simulator

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Grappling hook

A grappling hook, or grapnel, is a drag-looking device intended for grappling onto something. It 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. The grappling hook was originally used in naval warfare to catch ship rigging so that it could be boarded.

A common design has a central shaft with a hole ("eye") at the shaft base to attach the rope, and three or four equally spaced hooks at the end, arranged so that at least one is likely to catch on some protuberance of the target. Some modern designs feature folding hooks to resist unwanted attachment.

Most grappling hooks are thrown by hand, but some are propelled via compressed air, gunpowder, or rockets, either from dedicated grapple guns, or line throwers, such as the Plumett AL-52, or from conventional weapons, such as mortars, or guns with the appropriate muzzle device.

Traditionally, grappling hooks have been a tool of naval boarding, used to grapple the rigging or railing of enemy ships, and allow boarding parties to climb over. This tactic also transcends onto land, where it is used to climb over obstacles and for entering buildings.

Historically there have been big boarding grapnels, swung from the rigging of ships, also known as boarding drags (German: Enterdregge, Swedish: änterdragg).

Grappling hooks were used by soldiers at the D-Day landings to aid in climbing the cliffs at the Normandy beaches. Some were rocket-propelled and launched from mortars.

Grappling hooks are used by combat engineers to breach tactical obstacles. When used as such, the grappling hook is launched in front of an obstacle and dragged backwards to detonate tripwire-fused land mines, and can be hooked on wire obstacles and pulled to set off booby traps on the wire. A grapnel can clear up to 99% of the trip-wires in a single pass.

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device with multiple hooks attached to one end of a rope, generally used to temporarily secure one end of a rope, or to dredge for submerged objects
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