Amidships
Amidships means in or toward the middle of a ship — either the midpoint along its length (midway between bow and stern) or the centreline between the two sides, depending on context. The “midship section” is the ship's cross-section at its middle, and “helm amidships” is an order to put the rudder in the centre (straight, no turn).
Amidships is a key reference point in describing a ship: it is where the hull is typically at its fullest and structurally most stressed (the midship section governs much of the hull's strength calculation), and it is a datum for locating things along the vessel. It sits in the vocabulary of on-board position alongside fore, aft, abaft, astern and abeam. As a helm order, “amidships” centres the rudder to check a turn. Amidships is a fundamental locating and steering term in seamanship and ship description — the ship's middle, in length or in beam. It is basic nautical vocabulary.
Amidships is the ship's middle — the most stressed part of the hull, the datum for locating things aboard, and the helm order that centres the rudder to check a turn. Whether describing structure, position or steering, it is a fundamental reference point in the language of seamanship.
What does "helm amidships" mean?
An order to centre the rudder — put it straight, with no turn applied.
Why is the midship section important?
The hull is usually fullest and most stressed amidships, so the midship section governs much of the ship's structural-strength calculation.