A. The helm has four blades.
B. The propeller has forty blades.
C. The windlass has four blades.
D. The propeller has four blades.

A. The deck from bow to stern is called the main deck.
B. The deck from stern to bow is called the tweendeck.
C. The deck from bow to stern is called the upper deck.
D. The deck from stern to bow is called the lower deck.