COMNAP Asset Tracking System (CATS)

COMNAP Asset Tracking System (CATS)

The COMNAP Ship Position Reporting System (SPRS) has been replaced by a new, more automated reporting system that is now known as the COMNAP Asset Tracking System (CATS).

The SPRS stopped working on 31 December 2019.

CATS has the same objectives as SPRS, that is, it is an optional, voluntary system for exchange of information about National Program ship operations and capabilities. It is designed by COMNAP for COMNAP. The purpose of the system is to facilitate collaboration between National Programs and with relevant stakeholders.

However, technology improvements mean that the CATS does not require emails to be sent in order to update positions.  Once set up, postions can be acquired automatically from vessels and also from aircraft.

If your program is operating or contracting a vessel or aircraft that will operate in the Antarctic Treaty Area this season, and if you have not set up your positions to be automatically included, then please see “How to provide data to CATS/Data Feed Specification” at

If you have already set this up, and if you are a COMNAP Member, you can view the CATS by way of the app at (username and password will be required).

Futher questions in regards to set-up or including your vessel or aircraft, contact James Cusick​.

General questions about CATS, contact