Free USCG Deck Side Safety Questions and Answers

Question 1

Any individual maintaining a listening watch on a bridgeton-bridge radiotelephone must be able to _____.

Accepted Answer

Speak English

Answer

Any individual maintaining a listening watch on a bridge-to-bridge radiotelephone must be able to speak English. This is a requirement under international maritime regulations (SOLAS) to ensure clear and effective communication between vessels, especially in critical situations. English is the internationally recognized language for maritime communication.

Question 2

After removing someone from an electrical source who has been rendered unconscious by electric shock, you should _______.

Accepted Answer

Determine if he is breathing

Answer

After safely removing someone from an electrical source who has been rendered unconscious by electric shock, the immediate priority is to determine if they are breathing. Electric shock can cause respiratory arrest or cardiac arrest, so checking for breathing and pulse is the first critical step in providing emergency medical care. If not breathing, CPR should be initiated.

Question 3

When a tank measuring 60 feet in length and 30 feet in width is equipped with a centerline bulkhead and partially filled with salt water, what is the decrease in metacentric height caused by free surface? (The displacement of the vessel is 10,000 tons.)

Accepted Answer

0.1 foot

Answer

The decrease in metacentric height (GM) caused by free surface effect is calculated using a specific formula that considers the tank's dimensions and the vessel's displacement. For a tank with a centerline bulkhead, the effective width for the calculation is halved, significantly reducing the free surface moment. This calculation yields a decrease of approximately 0.1 foot, indicating a reduction in the vessel's initial stability.

Question 4

____ determines how the free surface affects initial stability.

Accepted Answer

the dimensions of the liquid surface and the vessel's displacement

Answer

The free surface effect, which reduces a vessel's initial stability, is directly proportional to the moment of inertia of the free liquid surface and inversely proportional to the vessel's displacement. Therefore, the dimensions (length and width) of the liquid surface in a tank determine its moment of inertia, and the vessel's displacement provides the counteracting righting moment. A larger free surface area or smaller displacement leads to a greater reduction in stability.

Question 5

Garbage discharged by vessels located 3 to 12 nautical miles from the nearest shore must be ground is subject to Annex V to MARPOL 73/78 and must not exceed _____.

Accepted Answer

1"

Answer

MARPOL Annex V specifies regulations for the discharge of garbage from ships to prevent marine pollution. For garbage discharged between 3 and 12 nautical miles from the nearest shore, it must be ground or comminuted so that it can pass through a screen with openings no larger than 25 mm (approximately 1 inch). This requirement ensures that the discharged material is small enough to disperse quickly and minimize environmental impact.

USCG - United States Coast Guard Practice Test

USCG - United States Coast Guard Practice Test

Free USCG Deck Side Safety Questions and Answers