VTS Traffic Management and Navigation 3

Question 1

During a vessel's transit through a VTS zone, the operator notices an unexpected current set causing the vessel to drift toward a shoal. What information should the VTS operator immediately broadcast?

Accepted Answer

A SECURITE call on channel 16 for all traffic in the area

Answer

A SECURITE call on Channel 16 is the appropriate broadcast for navigational safety information affecting vessels in the area.

Question 2

Which radar display mode is most useful for a VTS operator monitoring relative motion between vessels in a busy harbor entrance?

Accepted Answer

Relative motion mode

Answer

Relative motion mode shows vessel movements relative to a fixed reference point, making it easier to assess potential collision risks between multiple vessels.

Question 3

A deep-draft vessel requests transit through a shoaling channel. The VTS operator's tide tables show minimum underkeel clearance will be 0.5 meters at passage time. What factor should the operator consider first?

Accepted Answer

The vessel's squat effect at the planned transit speed

Answer

Squat effect reduces underkeel clearance at speed and must be factored in when assessing whether a deep-draft vessel can safely transit a channel.

Question 4

A VTS operator is managing traffic during a period of reduced visibility. Which action best supports safe vessel movement?

Accepted Answer

Implementing a one-way traffic flow in the main channel and advising vessels accordingly

Answer

Implementing one-way traffic flow and advising vessels reduces collision risk in restricted visibility without unnecessarily halting all operations.

Question 5

Under 33 CFR Part 161, which vessels are required to participate in a VTS in US waters?

Accepted Answer

Self-propelled vessels of 300 GT or more engaged in commercial service

Answer

Under 33 CFR Part 161, self-propelled vessels of 300 GT or more in commercial service are generally required to participate in US VTS.

(VTS) Vessel Traffic Services Operator Exam Practice Test

(VTS) Vessel Traffic Services Operator Exam Practice Test

VTS Traffic Management and Navigation 3