An anchor with collapsible flukes is provided with a spring tensioned latching mechanism which normally prevents the flukes from moving from a latched position to a collapsed position. The latching mechanism is unlatched and the flukes collapsed by a releasing mechanism including a compression spring and a firing pin. Tension on an anchor line draws the firing pin against the compression spring and, upon a sudden release of the tension in the anchor line, the firing pin is driven against the latching mechanism to unlatch it and permit collapse of the flukes.
A retractable grappling hook generally comprising a shaft having a longitnal extending axis and a plurality of hooks pivotally attached to the shaft. Each hook has a longitudinally extending axis and is pivotal to a retracted position such that the axis of each hook is substantially parallel to the axis of the shaft and to an extended position such that the axis of each hook is angulated with respect to the axis of the shaft. The retractable grappling hook further comprises a hook control system on the shaft for configuring and locking the hooks in either the extended or retracted positions, and an attachment member attached to the shaft for attaching the grappling hook to other devices.
