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Great Barrier Reef and Torres Strait Vessel Traffic Service

The Great Barrier Reef and Torres Strait Vessel Traffic Service (REEFVTS) monitors vessel traffic in the region to prevent collisions or incidents. The area has high environmental significance and is protected by a range of national and international measures.

Navigating a vessel through this region is challenging because the area:

  • is large and takes a long time to navigate
  • has confined waters with limited depths of water
  • has strong and variable tidal streams
  • is in a monsoon climate with low-visibility during rain squalls
  • can have tropical storms and cyclones
  • has narrow fairways
  • is used by a range of vessel types that have many different flag states and different types of cargo.


REEFVTS is a coastal vessel traffic service (VTS) dedicated to the Great Barrier Reef and Torres Strait region. Townsville has a dedicated 24-hour VTS centre for REEFVTS.


  • improves navigational safety in the Torres Strait and inner route of the Great Barrier Reef by giving information to vessels about
    • potential traffic conflicts
    • navigational information
  • lowers the risk of maritime incidents in the Great Barrier Reef and Torres Strait region that may result in
    • ship-sourced pollution
    • damage to the marine environment
  • responds quickly if there are any safety or pollution incidents in the Great Barrier Reef and Torres Strait region.

About REEFVTS video

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REEFVTS vessel master requirements

Vessel masters need to work with the REEFVTS officers to ensure safe operation of vessels in the Great Barrier Reef and Torres Strait region. Masters are expected to make the best use of REEFVTS information and services when making navigational decisions.

Vessels operating in the REEFVTS area should acknowledge information from REEFVTS when asked and must respond quickly to enquiries.

Masters are expected to:

  • adhere to REEFVTS reporting requirements
  • respond to all warnings and advice from REEFVTS
  • contact REEFVTS if they identify a hazardous situation that may impact on the navigational safety of others.

The master of a vessel is always responsible for the way the vessel is operated and manoeuvred, and its safe navigation under all circumstances.

Functions of REEFVTS

REEFVTS monitors and communicates with vessels for safer navigation throughout the Great Barrier Reef and Torres Strait.

This is done by maintaining a vessel traffic image of vessels moving through the area. A vessel traffic image, or integrated surface picture, is a visual representation of the position and movement of vessels on a geographic information system.

REEFVTS provides vessel masters and pilots:


REEFVTS provides these functions to vessels in the region using:

Communication systems

To communicate with REEFVTS, you need to use English and the International Maritime Organization’s (IMO’s) Standard Marine Communication Phrases through either:

  • Inmarsat C satellite system, which allows 2-way, text-based communication between a vessel and REEFVTS
  • VHF radio, which allows voice communication between vessels and the shore within the REEFVTS region.

Depending on a vessel’s position, you can contact REEFVTS on VHF channels 11 or 14 (radio call sign REEFVTS) 24 hours a day. To know what channel to use refer to the REEFVTS User Guide VHF Channel overview map.

If you can't communicate with REEFVTS using Inmarsat C or VHF radio, you must communicate by:

Mandatory vessel reporting system

The Great Barrier Reef and Torres Strait Ship Reporting System (REEFREP) is a key part of REEFVTS. It requires all vessels—including those on overseas, interstate or intrastate voyages—to identify themselves and what their intended passage is through the region. The vessel can then be tracked as it moves through the Great Barrier Reef and Torres Strait.

Vessels must provide the following reports:

  • Pre-Entry Report
  • Final Report

When applicable, vessels must also provide these reports:

  • Intermediate Position Reports
  • Route Deviation Report
  • Defect Report

Marine Order 63 and the REEFVTS User Guide detail the reporting requirements.

Vessels that must report

The following vessel types must report to REEFVTS:

  • vessels 50m or more in overall length
  • oil tankers, liquefied gas carriers or chemical tankers
  • vessels involved in towing or pushing 1 of these vessels
  • vessels involved in a towing or pushing operation when the overall length of the tow is more than 150m (measured from the stern of the towing vessel to the after end of the tow).

Other vessels moving through the REEFVTS area may voluntarily report. The following vessels are encouraged, but not required, to report to REEFVTS:

  • warships
  • naval auxiliary vessels
  • government owned or operated vessels.

Failure to report

Any vessel master, or officer of the watch (while in the REEFVTS area) is committing an offence if they:

  • fail to follow the reporting requirements
  • wilfully transmit information that is incorrect, false or misleading.

If you fail to report you may be fined and convicted by the Australian Maritime Safety Authority under the Commonwealth Navigation Act 2012.

Last updated
29 August 2017