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Also known as a chain shackle, D-shackles are narrow shackles shaped like a loop of chain, usually with a pin or threaded pin closure. D-shackles are very common and most other shackle types are a variation of the D-shackle. The small loop can take high loads primarily in line. Side and racking loads may twist or bend a D-shackle.
Shackle: Length: Before 1949, 12.5 fathoms; later 15 fathoms. [2] Toise: Length: Toise was also used for measures of area and volume Twenty-foot equivalent unit or TEU: Volume: Used in connection with container ships and ports
Class overview; Builders: Gibbs Gas Engine, 1961–1962; Barbour Boat Works, 1962–1963; Western Boat Builders, 1966–1967; Operators: United States Coast Guard
This image is a copy or a derivative work of txu-pclmaps-oclc-8322829_d_9.jpg, from the map collection of the Perry–Castañeda Library (PCL) of the University of Texas at Austin. This tag does not indicate the copyright status of the attached work.
On a jib, the sheet is connected to the clew; on a mainsail, the sheet is connected to the boom (if present) near the clew. [8] Clews are the lower two corners of a square sail. Square sails have sheets attached to their clews like triangular sails, but the sheets are used to pull the sail down to the yard below rather than to adjust the angle ...
Rigging systems commonly include shackles, master links and slings, and lifting bags in underwater lifting. In the United States the Occupational Safety and Health Administration (OSHA) regulates workplace safety including rigging in CFR 1926.251. [2] The Health and Safety Executive is responsible for the matters in the United Kingdom.
This image is a copy or a derivative work of txu-pclmaps-oclc-8322829_d_5.jpg, from the map collection of the Perry–Castañeda Library (PCL) of the University of Texas at Austin. This tag does not indicate the copyright status of the attached work.
In addition to holding rope open to assist the creation of a rope splice, modern push fids have markings for precise measurements in a variety of sizes of rope. The length of these fids is typically 21 or 22 times the diameter of rope to be spliced. A one-half-inch (12.7 mm) diameter rope would have any accompanying fid 10.5–11 in (266.7 ...
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