Quiz on Ship Stability

What does intact stability refer to in ship stability?

• Stability when the ship is grounded

• Stability when the hull is damaged

• Stability during high-speed maneuvers

• Stability when the hull is intact

What is the term for the moment that brings a ship back to its upright position?

• Trim Moment

• Righting Moment

• Buoyancy Moment

• Heeling Moment

What condition occurs when the vertical position of CG coincides with the transverse metacentre?

• Stable Equilibrium

• Unstable Equilibrium

• Dynamic Equilibrium

• Neutral Equilibrium

What does a positive metacentric height (GM) indicate?

• The ship is unstable

• The ship is capsizing

• The ship is neutrally stable

• The ship is stable

Which of the following is an external heeling moment?

• Beam winds

• Weight shift due to cargo

• Water trapped on deck

• Movement of weight athwartship

What happens during high-speed turning maneuvers?

• Centrifugal force acts on the center of gravity

• The ship remains upright

• The ship's buoyancy increases

• The ship capsizes immediately

What is the effect of grounding on a ship?

• It increases the ship's speed

• It has no effect on stability

• It can cause heeling and capsizing

• It always stabilizes the ship

What is the primary cause of internal heeling moments?

• Wind forces on the deck

• Water pressure on the hull

• Movement of weight within the ship

• External forces acting on the ship

What does longitudinal stability refer to?

• Stability during heeling

• Stability during grounding

• Stability in the longitudinal direction

• Stability in the transverse direction

What is the longitudinal metacentric height (GML)?

• Distance between the ship's bow and stern

• Distance between buoyancy and weight

• Distance between CG and longitudinal metacentre

• Distance between CG and transverse metacentre