VTS Traffic Management and Navigation 5

Question 1

Under IALA recommendations for VTS, which service level involves the VTS providing navigational assistance to a vessel upon request or on the operator's own initiative?

Accepted Answer

Navigational Assistance Service (NAS)

Answer

Navigational Assistance Service (NAS) is the IALA VTS service level where the operator actively assists vessels with navigation, particularly in difficult circumstances.

Question 2

A VTS operator observes via radar that a vessel's echo has disappeared in a rain clutter area near a rocky shoal. What is the most prudent immediate action?

Accepted Answer

Adjust the radar's STC (Sensitivity Time Control) to reduce clutter and attempt to reacquire the target, then contact the vessel

Answer

Adjusting STC to reduce rain clutter to attempt target reacquisition and simultaneously contacting the vessel is the appropriate initial response to an unexplained echo loss.

Question 3

A VTS authority issues a 'recommended route' to a vessel. What is the vessel master's legal obligation regarding this recommendation?

Accepted Answer

The master should follow the recommendation but retains ultimate responsibility for safe navigation

Answer

In most VTS regimes, recommended routes are advisory; the vessel master retains command and ultimate responsibility for safe navigation.

Question 4

When a VTS operator uses dead reckoning to project a vessel's future position, which three elements are required?

Accepted Answer

Last known position, speed over ground, and heading

Answer

Dead reckoning requires a known starting position, speed, and course to project where a vessel will be at a future time.

Question 5

A vessel operating in a VTS area declares a MAYDAY. After relaying the MAYDAY to the Coast Guard, the VTS operator should:

Accepted Answer

Continue normal traffic management while providing assistance as directed by the rescue coordination center

Answer

VTS operators maintain normal traffic management duties while supporting the rescue coordination center's instructions, as both functions are essential during a distress situation.

(VTS) Vessel Traffic Services Operator Exam Practice Test

(VTS) Vessel Traffic Services Operator Exam Practice Test

VTS Traffic Management and Navigation 5