FREE OUPV Deck General and Safety Questions and Answers

Question 1

Your vessel has several partially filled fuel tanks. How does the 'free surface effect' created by the liquid in these tanks impact the vessel's stability?

Accepted Answer

It decreases initial stability by creating a virtual rise in the vessel's center of gravity.

Answer

When a tank is partially filled, the liquid can slosh from side to side as the vessel rolls. This movement of liquid acts like a weight shifting to the low side, which effectively raises the vessel's center of gravity (G). This 'virtual rise' in G reduces the metacentric height (GM), thereby decreasing the vessel's initial stability and its ability to resist rolling.

Question 2

Under MARPOL Annex V, which of the following is an illegal method of garbage disposal for a vessel operating 4 nautical miles from the nearest land?

Accepted Answer

Discharging paper, rags, and glass.

Answer

MARPOL Annex V strictly prohibits the discharge of plastics, dunnage, and general refuse like paper, rags, and glass into the sea. Food waste may be discharged if it is ground to pass through a 25mm (approx. 1 inch) screen and the vessel is more than 3 nautical miles from the nearest land and not in a special area.

Question 3

You are the operator of a 45-foot uninspected passenger vessel. According to USCG regulations for a vessel of this size, what is the MINIMUM required carriage of portable fire extinguishers?

Accepted Answer

Three B-I extinguishers or one B-I and one B-II extinguisher.

Answer

For motorboats between 40 and 65 feet in length, the USCG requires a minimum of three B-I type portable fire extinguishers. Alternatively, one B-II and one B-I extinguisher can be carried to meet the requirement.

Question 4

As the operator of an OUPV, you are required to conduct safety drills with your crew. What is the minimum frequency for conducting these drills, including man overboard and fire drills?

Accepted Answer

At least once per month.

Answer

Regulations require the master of a vessel to conduct safety drills with the crew at least once each month. These drills must cover actions to be taken in emergencies such as fire, man overboard, and abandoning ship. A record of these drills should be maintained.

Question 5

A hydrostatic release mechanism on an inflatable liferaft is designed to automatically perform which function?

Accepted Answer

Release the liferaft from its cradle if the vessel sinks.

Answer

A hydrostatic release unit (HRU) is a pressure-activated device. If the vessel sinks, the water pressure will cause the HRU to activate at a depth of approximately 1.5 to 4 meters, releasing the liferaft container from its cradle and allowing it to float to the surface. The painter line remains attached to the vessel, and its tension will then inflate the raft.

OUPV - Operator Uninspected Passenger Vessel Practice Test

OUPV - Operator Uninspected Passenger Vessel Practice Test

FREE OUPV Deck General and Safety Questions and Answers