VTS VTS Equipment and Technology Questions and Answers

Question 1

A VTS center receives a distress call on VHF Channel 16 from a vessel that is not transmitting AIS data and is located within a dense traffic area.
The operator can hear the transmission but cannot see a new or unidentified target on the radar display.
Which piece of equipment is specifically designed to help the operator determine the bearing of the VHF transmission to assist in locating the vessel?

Accepted Answer

VHF Direction Finder (VHF-DF)

Answer

Automatic Identification System (AIS) receiver

Answer

Closed-Circuit Television (CCTV) with zoom capability

Answer

Electronic Chart Display and Information System (ECDIS)

Question 2

A VTS system integrates data from multiple sensors to create a comprehensive traffic image. It receives a radar plot for a target and, simultaneously, an AIS transmission with a matching position but a conflicting course and speed. How should a modern, integrated VTS system typically handle this conflicting information?

Accepted Answer

Fuse the data into a single track but flag it for operator attention and verification.

Answer

Automatically delete both targets to avoid confusion.

Answer

Prioritize the AIS data as it is self-reported by the vessel.

Answer

Display both targets separately, requiring manual operator correlation.

Question 3

According to IALA recommendations, what is the minimum recommended period for a VTS to record and retain voice communications and sensor data for post-incident analysis?

Accepted Answer

30 days

Answer

7 days

Answer

90 days

Answer

1 year

Question 4

A VTS center is being upgraded. To enhance its Information Service (IS), particularly for broadcasting localized conditions that may affect navigation, which of the following sensor systems would be most directly beneficial?

Accepted Answer

Hydro-meteorological sensors

Answer

VHF Direction Finder (VHF-DF)

Answer

Long-range thermal cameras

Answer

An additional X-band radar

Question 5

In a VTS environment, what is the primary advantage of using Automatic Identification System (AIS) data as a supplement to primary radar surveillance?

Accepted Answer

AIS provides positive identification and detailed, static information about a vessel.

Answer

AIS provides superior target detection in heavy precipitation.

Answer

AIS is the only system capable of determining a vessel's position.

Answer

AIS signals can penetrate physical obstructions like islands and headlands.

Question 6

A VTS operator needs to visually confirm the navigation light configuration on a vessel that is reporting restricted ability to maneuver. The vessel is several miles away, and it is nighttime. Which technology integrated into the VTS is best suited for this task?

Accepted Answer

CCTV system with low-light and thermal imaging capabilities

Answer

S-Band Radar

Answer

Automatic Identification System (AIS)

Answer

VHF radio with Digital Selective Calling (DSC)