🔍 Key Concepts

• Amidships means the middle of the vessel, halfway between the forward and aft perpendiculars. • On ship arrangement and fire control plans, amidships is shown by a distinct standard symbol that is symmetrical fore-and-aft. • Compare each numbered symbol with what you would expect for a mark that represents a center point rather than a tank, line, or boundary.

💭 Think About

• Which symbol looks most like a simple marker for a single reference position rather than for a system like piping or tanks? • If amidships is the midpoint of the length, which symbol appears visually balanced left-to-right, suggesting a central point on the ship? • Look for the symbol that could logically be placed on the ship’s side or plan to show "this is the middle"—would it need to look like a container, a connection, or just a center mark?

✅ Before You Answer

• Eliminate any symbols that resemble piping connections or manifolds, which are used for fuel/ballast systems rather than positions. • Ask yourself which symbol is most geometrically simple and centered, appropriate for marking a midship location line on a plan. • Before choosing, picture a profile view of a ship’s side: which of these symbols can you most easily imagine printed there to show the midship station?