Exercise 1/lesson A

The term draft indicates the depth of the keel below the waterline:

• Forward

• Aft

• Amidships

• At its lowest point.

The average of the fore and aft draft is termed ________ draft.

• Average

• load

• Mean

• Freeboard

The actual weight of a ship in its basic working condition is indicated by:

• Gross tonnage

• Net tonnage

• Displacement

• Light displacement

What is the law of flotation?

• The weight of water displaced by a ship is equal to the weight of the cargo she is capable of carrying.

• Heavy cargo must be stowed low in the hold.

• The weight of the cargo must not exceed the weight of the ship.

• A floating object will displace a measure of liquid equal to its own weight.

The term displacement of a ship is:

• The amount of water pushed aside by the progress of a ship when having way upon her.

• The weight of a ship and all its contents at a given time.

• The amount of cargo, stores and bunkers a ship can carry.

• The amount of cargo a ship can carry.

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.

The “centre of the underwater volume of a vessel” is known as:

• centre of gravity

• centre of buoyancy

• centre of flotation

• metacentre

What do you understand by the term “freeboard”? It is the vertical distance to:

• water level to the keel

• water level from the main deck

• water level from the centre of gravity

• water level from the centre of buoyancy

The centre of gravity of a vessel is:

• the point where the weight of a vessel is considered to act

• the point about which the vessel heels

• a point located on the centerline of the vessel mid length

• a point halfway up from the keel to the deck

Define the term “Metacentre” (transverse).

• it is the point above which one must not allow the centre of gravity to rise.

• when a ship is heeled through a small angle the intersection of the vertical through the new centre of buoyancy and the centerline is the metacentre.

• it is the point in the centerline of a ship located amidships.

• it is the point below the centre of buoyancy.