VTS Navigation Systems 4

Question 1

What is a Traffic Separation Scheme (TSS) and what is its primary function?

Accepted Answer

A routing measure that separates opposing vessel traffic streams to reduce collision risk

Answer

A TSS is an IMO-adopted routing measure that organizes one-way traffic lanes to separate vessels traveling in opposite directions and reduce collision risk.

Question 2

In a VTS area, a vessel is observed making a U-turn inside a TSS separation zone. What should the VTS operator do first?

Accepted Answer

Contact the vessel and advise that maneuvering in the separation zone is prohibited under COLREGS Rule 10

Answer

COLREGS Rule 10 prohibits vessels from entering the separation zone except in emergencies, so the VTS operator should first contact and advise the vessel.

Question 3

What technology does Differential GPS (DGPS) use to improve position accuracy?

Accepted Answer

A reference station with a known position that broadcasts corrections to GPS errors

Answer

DGPS uses a land-based reference station at a precisely known location to calculate GPS errors and broadcast correction signals to nearby receivers.

Question 4

Which COLREGS rule specifically addresses vessels' responsibilities in Traffic Separation Schemes?

Accepted Answer

Rule 10

Answer

COLREGS Rule 10 covers conduct of vessels in Traffic Separation Schemes, including requirements for joining, leaving, and crossing separation lanes.

Question 5

A vessel reports its position by latitude and longitude, but the position plots in the middle of land on the VTS chart. What is the most likely explanation?

Accepted Answer

The vessel transposed or misread its GPS coordinates

Answer

A position that plots on land most commonly results from the vessel transposing digits or misreading its GPS display when making the report.

(VTS) Vessel Traffic Services Operator Exam Practice Test

(VTS) Vessel Traffic Services Operator Exam Practice Test

VTS Navigation Systems 4