MIN 665 - Cessation of DGPS - Royal Institute of Navigation

News & Press: Maritime

MIN 665 - Cessation of DGPS

09 August 2021 (1 Comments)

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The formal notification from Maritime & Coastguard Agency about DGPS being switched off around the UK next March. A consultation confirmed it's no longer needed as RAIM and SBAS are now widespread.

The important call-to-action for mariners is: "Mariners should check their GNSS receiver(s) to confirm the presence of RAIM and consider upgrading to type-approved SBAS receiving equipment when available."

This is excellent advice and we encourage everyone on the water to actively do so.

All the acronyms, background etc. explained at the following link:

https://www.trinityhouse.co.uk/news/tri-gla-decision-to-discontinue-dgps-service-in-2022

Formal announcement link is:

https://www.gov.uk/government/publications/min-665-navigation-cessation-of-dgps-service-around-uk-coast

Comments...

David Varley says...
Posted 12 August 2021

In terms of accuracy for seagoing trading vessels I have always considered that this was undesirable. What reputable use can there be in allowing a vessel to clear the geology by 1-2 metres instead of 3-5 metres? However the deckside experts demanded it and so we fitted it. I would have to brush-up on the efficacy WRT to integrity checking. I had assumed the DGPS integrity alarm required by the IMO Performance Standard was one restricted to the integrity of the Differential correction transmissions.