Abstract: A self-retrievable anchor with a shovel, lever, and manifold contains no welded parts eliminating weld failure due to tensional and bending forces during anchor retrieval. The anchor has interchangeable parts. The manifold attaches the shovel to lever, and contains at least an internal breakable fuse. A specific dimensioned fuse to anchor size is used. The fuse is not universal. When a tensional force is applied above fuse shear strength capacity, and below breaking strength of the rope, the fuse breaks rotating the shovel 180° about a pivot hinge pin. The anchor is released when stuck at sea bottom without any loss. The anchor's interchangeable parts makes it capable to change shovel shapes suitable to different sea bottom conditions. A stop bar on the shovel portion may be included. The lever may also detach during retrieval by a breakable pivot hinge pin or fuse pin alone, and shovel/manifold later replaced.

Abstract: 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.

Abstract: An improved marine anchor that may be quickly assembled or disassembled from its component parts. The compactness of these parts allows for very convenient storage of the anchor when it is disassembled. When assembled, the anchor provides great strength and holding ability. Because the anchor is very quickly assembled, it is ideal for emergency situations. Since the flukes are removable, the user can select various numbers and shapes, interchanging them for various sea-bed conditions as appropriate.

Abstract: A self-deploying stabilizer for marine anchors is disclosed wherein the silizers fold into a collapsed, compact configuration for easy stowage and automatically self-extend to a working position after anchor deployment for stable anchoring performance. The stabilizers have hinged movable arms which include angled reaction force plates which operate against drag forces created on the plates as an anchor moves through various materials in a marine environment to force the stabilizer arms to move to a fully open position. Springs may be used for assisting or restricting deployment of the movable arms, and lock bolts or break-away shear pins may be provided to retain the movable arms in a desired position.

Abstract: An improved marine anchor that may be quickly assembled or disassembled from its component parts without the use of tools. The compactness of these parts allows for more convenient storage of the anchor components than is available with other anchors. When assembled, the anchor provides great strength and holding ability. Because this anchor is quickly and easily assembled without tools, it is ideal for emergency situations. Since the flukes are removeable, the user can interchange flukes selecting them for their appropriateness to the sea-bed conditions in which he is anchoring.

Abstract: The present invention relates in one aspect to an anchor comprising a shank portion and a stock portion, the stock portion extending through a first aperture in the shank portion and extending laterally of the shank portion when in use, but being demountable so as to be removable from the first aperture in the shank entirely or so as to be moveable in the first aperture to a position where it can be orientated substantially in alignment with the shank, wherein the stock is fitted with a keeper which in the operative position of the stock, is engageable with a second aperture in the shank of the stock spaced from the first aperture, said keeper being provided with means to enable it to be retained in the second aperture.

Abstract: An anchor of the twin fluke type in which crown members attached to the flukes support transverse restraining bars adapted to limit swing of the shank out of the plane of the flukes. One end of each restraining bar is pivotally connected to its respective crown member, and the other end is engaged by a locking member when the bar is in transverse restraining position. A release line connected to each locking member extends substantially coextensively with the anchoring line and is adapted to be pulled to remove the locking member from whichever restraining bar is engaging the shank, thereby permitting the restraining bar to pivot out of restraining position and permitting the shank to swing up to 180.degree. from the plane of the flukes so that the anchor can be pulled clear of obstructions.