What is the term for a mast that is attached to the deck rather than stepping through a mast step?

• A. Deck-stepped mast
• B. Keel-stepped mast
• C. Spar mast
• D. Rig mast

Answer: (A)

A mast that is attached to the deck is deck-stepped. The bottom of the mast sits on a mast step built into the deck, so the mast is supported and secured at the deck level rather than passing down through the deck into the hull. This arrangement is common on smaller boats because it’s simpler and lighter to install, but it can place more compressive load on the deck and requires good sealing to prevent leaks. In contrast, a keel-stepped mast runs through the deck to a step near the keel, which transfers many loads into the hull or keel structure and is often used on larger boats for added strength.