The Manual for Use by the Maritime Mobile and Maritime Mobile-Satellite Services is published in accordance with Article 20 (No. 20.14) of the Radio Regulations and results from studies carried out in the ITU-R since 2008. Volume 1 provides descriptive text of the organization and operation of the GMDSS and other maritime operational procedures, while Volume 2 contains the extracts of the regulatory texts associated with maritime operations.
Now available (CD or Hard-copy).
Useful articles
Quality improvements of satellite positions
The position given by a satellite receiver can be improved with a technique that uses receivers whose positions are known in order to calculate the extent of the current error in the satellite navigation system