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The General Lighthouse Authorities of the United Kingdom and Ireland (GLAs) comprise:

The Research and Radionavigation Directorate (R&RNAV) undertakes research and development of physical and radio marine aids to navigation (AtoNs), support systems and their integration to support the GLAs' mission "to deliver a reliable, efficient and cost-effective Aids to Navigation service for the benefit and safety of all mariners".

Visual Signalling

Light source research, study of visual perception & metrology of visual AtoNs


Encompassing various
navigation technologies
and how they are
combined to achieve Resilient PNT


IMO's future, digital concept for the maritime sector, to improve safety of navigation & protection of the environment

AtoN Support Systems

Projects related to supporting the operation of existing GLA services.

News From Around The World

UK to lose Galileo Security Monitoring Centre

Sat, 20 Jan 2018 00:00:00 GMT

Taken from RIN

ENC 2018 papers due

Thu, 18 Jan 2018 00:00:00 GMT

Taken from RIN

Smart Buoy system (SMB) test-bed – experts’ meeting

Thu, 31 Aug 2017 08:00:00 +0000

Taken from News


Fri, 31 Mar 2017 08:00:00 +0000

Taken from News

GNSS and Positioning for the Future (Workshop)

Wed, 31 Oct 2012 08:00:00 +0000

Taken from News

Marine AtoN Lights Calculator

Thu, 31 Mar 2011 08:00:00 +0000

Taken from News

The GLAs announce eLoran contract

Thu, 31 May 2007 08:00:00 +0000

Taken from News