356. What is the name of tackle number 9 as shown in illustration D029DG below?

Illustration D029DG shows tackle number 9 as a luff tackle, characterized by one double-sheave block and one single-sheave block with three parts of line supporting the load. This configuration distinguishes it from a double whip (two single blocks), a single purchase (single blocks only), or a one-two tackle (a different arrangement in the illustration set).