AB Ship Construction and Cargo Questions and Answers

Question 1

Which of the following best describes the primary purpose of a cofferdam on a vessel?

Accepted Answer

To create a void space that isolates and separates tanks containing incompatible liquids.

Answer

To provide a dedicated space for ballast water treatment equipment.

Answer

To serve as a primary storage tank for fresh water or fuel oil.

Answer

To act as a main structural component supporting the main deck.

Question 2

A vessel is loading a heavy piece of equipment from the pier using its own deck crane. What is the immediate effect on the vessel's stability from the moment the weight is lifted clear of the pier until it is landed on deck?

Accepted Answer

The vessel's center of gravity (G) effectively rises to the head of the crane.

Answer

The center of buoyancy (B) shifts significantly outboard.

Answer

The metacentric height (GM) increases, making the vessel stiffer.

Answer

The free surface effect in the ballast tanks is eliminated.

Question 3

A vessel is loaded with heavy cargo concentrated in the midship holds, while the fore and aft holds are empty. If wave crests are supporting the bow and stern, what type of longitudinal stress is the hull experiencing?

Accepted Answer

Sagging

Answer

Racking

Answer

Hogging

Answer

Pounding

Question 4

Which of the following structural members are considered the 'ribs' of the ship, providing the primary transverse strength to the hull?

Accepted Answer

Frames

Answer

Longitudinals

Answer

Girders

Answer

Stanchions

Question 5

In the context of cargo operations, what does the 'stowage factor' of a particular commodity represent?

Accepted Answer

The ratio of a cargo's volume to its weight.

Answer

The total weight of the cargo that can fit into a single hold.

Answer

The maximum time allowed for loading the cargo per gang.

Answer

The official classification number for hazardous materials.

Question 6

On a vessel's Plimsoll mark, the line marked with the letter 'W' indicates the maximum draft for which condition?

Accepted Answer

Winter salt water

Answer

Warm salt water

Answer

Winter North Atlantic

Answer

Fresh water