SCS1 sample 4

Define the term lightship displacement

• The weight of a vessel when empty, i.e weight of the hull and machinery

• The total weight of a ship remaining after deducting the weight of the cargo aboard

• The total weight of the stores, bunkers, fresh water and cargo carried by a ship

• The weight of a vessel when empty, i.e weight of the hull

What do you understand by the term 'Freeboard'

• Waterline to the keel

• Waterline to the main deck

• Waterline to the center of gravity

• Waterline to the center of buoyancy

Define the term deadweight

• the total weight of a ship remaining after deducting the weight of the cargo aboard

• Under deck tonnage

• The total weight of stores, bunkers, fresh water and cargo carried by a ship

• The total weight of a ship and all its contents

In the course of a voyage a vessel is passing from fresh water to salt water. What would be the effect?

• An additional volume of water is displaced

• A lesser volume of water is displaced

• Draft increases

• The volume of water displaced remains the same

A Ship in unstable or neutral equilibrium is made stable by:

• Lowering the ship effective center of gravity

• Raising the ship effective center of gravity

• Loading cargo on main deck

• Discharging half of a fresh water tank

What would the ship's stability condition be if the center of gravity coincided with the metacenter?

• The ship would have excessive stability

• The ship would be in a condition of neutral equilibrium

• The ship would have positive GM

• The ship would have negative GM

In the course of a voyage, fuel is consumed from tanks located in the bottom of the ship. What effect would this have on the stability of the ship?

• It would increase the ship's stability

• It would decrease the ship's stability

• It would have no appreciable effect on the ship's stability

• It would improve the seaworthiness of the ship GM

Answer explanation

The gravity goes up, so the smaller the distance between G and M (Less stable)

The point at the intersection of vertical lines through the centers of buoyancy in initial and slightly inclined positions is:

• The center of gravity

• The metacenter

• The righting moment

• The righting lever

Answer explanation

The combination of a force applied at a distance is called a:

• Lever

• Heel

• Moment

• Righting lever

A Ship is considered to be too 'tender'. What is the best action to take?

• The effective center of gravity of the ship should be lowered within that ship

• The effective center of gravity of the ship should be raised within that ship

• All double bottom tanks should be emptied

• Weights should be loaded on deck