🔍 Key Concepts

• Longitudinal framing system vs transverse framing system in ship construction • What structural members run athwartship (side to side) and which run fore-and-aft (longitudinally) • Differences between floors, web frames, stringers, and margin plates

💭 Think About

• First, decide which of the listed parts normally run fore‑and‑aft and which normally run athwartship. Cross off anything that is primarily a longitudinal member. • Think about which member is specifically designed to SUPPORT and TIE TOGETHER many longitudinal frames at once, forming a sort of deep transverse girder. • Consider where you would typically find a margin plate and what its main function is (hint: think about the tank top boundary) and ask if that matches the role of supporting longitudinal frames across the breadth of the vessel.

✅ Before You Answer

• Verify which option is a deep transverse structural member used in longitudinally framed ships. • Confirm which items in the list are primarily longitudinal members (running fore‑and‑aft) and therefore unlikely to be the athwartship support described. • Check your definitions from a ship construction text: floors vs web frames vs stringers vs margin plates, and match the one that is explicitly described as supporting longitudinal frames.