In illustration D033DG below, what does the letter "M" indicate?
• Review the difference between a web frame and a stringer in transverse framing systems • Recall what a cant frame is used for and where it is usually located in the hull • Understand how an intercostal member is oriented relative to continuous longitudinals or girders
• Look closely at where letter "M" is pointing: is it a longitudinal member running fore‑and‑aft, or a transverse member running athwartships/vertically? • Ask yourself whether this structural piece appears to be continuous around the shell, or fitted in between other continuous members • Compare the shape and orientation of the member at "M" with typical textbook diagrams of web frames and stringers
• Verify whether cant frames are normally found near the bow or stern rakes, and at what angle to the centerline • Check if a stringer is usually longitudinal (fore‑and‑aft) or transverse, and whether it is inside or against the shell plating • Confirm whether an intercostal is defined as a short member fitted between continuous longitudinals or frames rather than one large continuous ring
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