AB Deck General and Safety 4

Question 1

What does a vessel display at night to indicate it is engaged in towing with the tow exceeding 200 meters in length?

Accepted Answer

Three masthead lights in a vertical line, sidelights, sternlight, and towing light

Answer

When the length of tow exceeds 200 meters, the towing vessel displays three masthead lights in a vertical line, sidelights, a sternlight, and a yellow towing light.

Question 2

What is the FIRST step in the proper procedure for entering a confined space on board a vessel?

Accepted Answer

Obtain a confined space entry permit

Answer

Before any entry, a confined space entry permit must be obtained and signed off by the responsible officer, which documents atmosphere testing and safety precautions.

Question 3

Under OSHA and STCW, what minimum oxygen percentage must be present in a confined space before entry is permitted?

Accepted Answer

19.5%

Answer

Oxygen content must be at least 19.5% before a confined space is considered safe for entry without supplied-air breathing apparatus.

Question 4

What does 'heaving to' mean for a vessel in heavy weather?

Accepted Answer

Adjusting speed and heading to keep the vessel nearly stationary and reduce pounding

Answer

Heaving to involves balancing sails or adjusting engine power and rudder to hold the vessel nearly stationary and reduce stress on the hull in heavy weather.

Question 5

A SOLAS training manual must be kept where on board a vessel?

Accepted Answer

In each crew cabin and in the mess room

Answer

SOLAS requires a training manual to be kept in each crew cabin and in the mess room to be accessible for crew self-study at any time.

(AB) Able Seaman Exam Practice Test

(AB) Able Seaman Exam Practice Test

AB Deck General and Safety 4