🔍 Key Concepts

• Transverse framing vs. longitudinal framing in ship construction • What the inner bottom / tank top actually rests on in a double-bottom ship • Difference between floors and girders in hull structure

💭 Think About

• Ask yourself: in a transverse-framed ship, which direction are the main frames running, and which members are secondary? • Think about which members directly connect the outer bottom shell to the inner bottom (tank top): are these generally called floors or girders? • For a double-bottom, what kind of members must be continuous to support plating over a wide area?

✅ Before You Answer

• Verify what floors are: short, deep transverse plates that connect the port and starboard sides at the bottom and support the inner bottom. • Verify what girders are: usually longer, heavier longitudinal strength members that run fore-and-aft. • Confirm that the ship is transverse-framed, so the primary framing is transverse and the supporting members for the tank top follow that system.