Which term refers to the main structural frames that run lengthwise along the hull?

Which term refers to the main structural frames that run lengthwise along the hull?

• A. Transverse frames
• B. Deck beams
• C. Longitudinal frames
• D. Frame ribs

Answer: (C)

Longitudinal frames are the main structural members that run along the length of the hull, from bow to stern. They provide strength in the long direction, helping the hull resist bending fore and aft and keeping its shape under load. These frames tie into the keel and work with other framing to form a rigid shell. In contrast, transverse frames run across the hull to define the cross-sectional shape, deck beams support the decks, and ribs are the curved crosswise elements that shape the hull.

Longitudinal frames are the main structural members that run along the length of the hull, from bow to stern. They provide strength in the long direction, helping the hull resist bending fore and aft and keeping its shape under load. These frames tie into the keel and work with other framing to form a rigid shell. In contrast, transverse frames run across the hull to define the cross-sectional shape, deck beams support the decks, and ribs are the curved crosswise elements that shape the hull.