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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

Astronomical Autumn

Fri, 22 Sep 2017 00:00:00 GMT

Taken from RIN

The first Presidential Address

Tue, 19 Sep 2017 00:00:00 GMT

Taken from RIN


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

Taken from News

Pelangi signs Agreement with TH

Thu, 31 Jan 2013 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