VTS Core Nautical Knowledge 4

Question 1

What is the primary purpose of a VTS 'traffic image'?

Accepted Answer

To maintain a comprehensive picture of all vessel movements in the VTS area

Answer

The traffic image is the VTS operator's continuously updated mental and electronic picture of all vessel traffic within the VTS area, used to identify conflicts and provide information.

Question 2

What does 'draft' refer to when describing a vessel?

Accepted Answer

The vertical distance from the waterline to the lowest point of the keel

Answer

Draft (or draught) is the vertical measurement from the waterline to the deepest point of the vessel's keel, indicating how deep the vessel sits in the water.

Question 3

Under COLREGS, Rule 8 addresses 'action to avoid collision.' Which of the following best describes this rule?

Accepted Answer

Any action taken must be large enough to be readily apparent to the other vessel

Answer

COLREGS Rule 8 requires that any action taken to avoid collision must be large and bold enough to be readily apparent to the other vessel, and must be taken in ample time.

Question 4

What is a 'Notice to Mariners' (NtM)?

Accepted Answer

An official publication informing mariners of important matters affecting navigation

Answer

A Notice to Mariners is a periodic official publication that notifies mariners of corrections to nautical charts, publications, and other information affecting navigation safety.

Question 5

When two power-driven vessels are on crossing courses, which vessel is the give-way vessel?

Accepted Answer

The vessel with the other on its starboard side

Answer

COLREGS Rule 15 states that when two power-driven vessels are crossing, the vessel which has the other on its own starboard side shall keep out of the way.

(VTS) Vessel Traffic Services Operator Exam Practice Test

(VTS) Vessel Traffic Services Operator Exam Practice Test

VTS Core Nautical Knowledge 4