Where is a ship's pivot point when moving from all stop to all ahead?

Master the Navigation, Seamanship, and Shiphandling (NSS) – Officer of the Deck (OOD) Phase 2 Exam with engaging flashcards and multiple choice questions, complete with hints and explanations. Prepare comprehensively for your test!

Multiple Choice

Where is a ship's pivot point when moving from all stop to all ahead?

The pivot point is the location about which the ship tends to rotate when propulsion and hydrodynamic forces act on the hull. As a vessel goes from a standstill to moving ahead, that turning center shifts forward toward the bow. So during the transition from all stop to all ahead, the pivot point is toward the forward part of the ship. The exact spot depends on hull form, propeller layout, rudder angle, and depth, but the general trend is a forward-moving pivot as speed increases.

The pivot point is the location about which the ship tends to rotate when propulsion and hydrodynamic forces act on the hull. As a vessel goes from a standstill to moving ahead, that turning center shifts forward toward the bow. So during the transition from all stop to all ahead, the pivot point is toward the forward part of the ship. The exact spot depends on hull form, propeller layout, rudder angle, and depth, but the general trend is a forward-moving pivot as speed increases.

More practice questions