Question 645 Deck General

70% to pass

What does item "C" refer to in illustration D045DG of a 30-ton pedestal crane?

Diagram for USCG Deck General: What does item "C" refer to in illustration D045DG of a 30-ton pedestal crane?
A Block/hook assembly
B Equalizing beam
C Rider block
D Hoist fall spreader
AI Explanation

The correct answer is C) Rider block. The rider block is a component of a pedestal crane that allows for the hoist rope or cable to pass through and change direction, enabling the crane to lift and move loads. It is a critical part of the crane's rigging system and is responsible for smoothly guiding the hoist line to the load. The other answer choices are not correct because: A) The block/hook assembly refers to the hook and sheave block at the end of the hoist line, not the rider block. B) The equalizing beam is a different component that distributes the load evenly across multiple hoist lines. D) The hoist fall spreader is not a component typically found on a pedestal crane.

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