🔍 Key Concepts

• Look closely at tackle number 1 and count how many blocks (sheaves) are actually used in that system. • Review the basic definitions of a single whip, a runner, a gun tackle, and a one‑fold purchase in your seamanship text. • Notice whether the block in tackle 1 is fixed to the overhead or moves with the load; that detail is key to the traditional name.

💭 Think About

• Ask yourself: Does tackle 1 use one block or two, and is that block fixed or moving with the weight? • Which of the answer choices, by definition, requires two blocks? If tackle 1 clearly shows only one block, you can rule that term out. • Think about mechanical advantage: with the way the line is led in tackle 1, how many parts of line are actually supporting the weight? Match that to the standard names in your study guide.

✅ Before You Answer

• Verify how many blocks and sheaves are in tackle 1. • Confirm whether the standing part of the line is made fast to the overhead or to the moving block with the weight. • Match what you see to the textbook sketch for single whip, runner, one‑fold purchase, and gun tackle before choosing your answer.