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Different types of shackles. The yellow cable ties indicate the date of the last tool inspection. A well-used shackle. A shackle (or shacklebolt), also known as a gyve, is a U-shaped piece of metal secured with a clevis pin or bolt across the opening, or a hinged metal loop secured with a quick-release locking pin mechanism.
A shackle code is a cryptographic system used in radio communications on the battle field by the US military, the Rhodesian Army, and the Canadian Army, among other English speaking militaries which might not distribute or require sophisticated one-time use pads. It is specialized for the transmission of numerals.
RSL - Reserve Static Line RSL Shackle, held, and part of RSL shown installed in the container and attached to the main canopy riser RSL ring. A reserve static line, occasionally called a Stevens Lanyard or Stevens Release, is a device that automatically opens the reserve parachute container when the main parachute is cut-away.
The most common type has a single snap hook at one end and a swivel ring at the other, but double ended bolt snaps and single ended snaps with a swivel shackle are also available. There are a few variations on the style of the hook, gate opening and swivel style. [2] The characteristic element of the bolt snap is the bolt action gate.
Certain restraint devices, such as handcuffs, legcuffs or thumbcuffs; As part of a land vehicle, a shackle is a link connecting a leaf spring to the frame; A nautical unit used for measuring the lengths of the cables and chains (especially anchor chains), equal to 15 fathoms, 90 feet or 27.432 meters.
The US Navy specify a snap-shackle for this function. [ 2 ] [ 3 ] For shallow water surface supply air diving, the diver's umbilical is typically a 3-part umbilical comprising a 3 ⁄ 8 inch (9.5 mm) bore breathing gas hose, 1 ⁄ 4 inch (6.4 mm) bore pneumofathometer ("pneumo") hose, and diver communications cable, which usually also serves as ...
Personnel transfer from USS Rankin by highline, a form of jackstay, 1960.. A jackstay is a cable or bar between two points to support and guide a load between those points, or as an anchor to attach something to be constrained along that line.
three part shackle. Also: "bolt and nut shackle", "bolt shackle" A shackle which uses a bolt as the pin, secured with a nut. The nut may be locked with a split pin for greater security. The bolt may rotate in the shackle under load without great risk of unscrewing the pin through-water communications. See: through-water communications