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- Q400 - Navigation and Deck General/Safety
79. What is the name of tackle number 12 as shown in illustration D029DG below?
Tackle 12 is a threefold purchase because it consists of two triple blocks, which defines a threefold purchase as having six parts of line supporting the load. A gin tackle uses a single and double block, davit tackles use single or double blocks, and 'deck tackle' is a general term, none of which match the configuration of tackle 12.
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