

Challenger

Outfit Management

Compass Adjusting & Repairs

Paper Charts & Publications

Auto Routeing

Challenger Shield

Electronic Navigation

Digital Publications

Team

Partners
Total Navigation Solutions
Efficient. Simplistic. Evolutionary.
A trusted and reliable partner for all your navigational requirements is Poseidon Navigation Services. The company opened doors in 2014 and is owned and run by Thomas Gunn, an industry leader with over 40 years’ maritime experience.
While evolving with the demands of the navigation world, PNS Ltd can offer a variety of digital solutions starting with our very own Challenger software which provides weekly updates, voyage planning tools and instant licensing, ChallengerShield for cyber security on the Bridge, ADMIRALTY Digital Publications (ADP), ADMIRALTY Electronic Nautical Publications (AENP), ADMIRALTY Vector Chart Service (AVCS), Witherby Connect & IMO digital titles… the list goes on.
As well as migrating with the times we believe that tradition should continue to be supported where customers still rely on good old-fashioned paper charts and publications. Providing bespoke services to our clients sets us apart from the rest.

Latest News
New Edition Week 28
ADMIRALTY CHARTS AND PUBLICATIONS NOW PUBLISHED AND AVAILABLE NEW EDITIONS OF ADMIRALTY CHARTS AND PUBLICATIONS New Editions of ADMIRALTY Charts published 10 July 2025 Title Title, limits and other remarks 932 Indonesia, Jawa - North Coast, Pelabuhan Tanjung Priok and...
New Edition Week 27
ADMIRALTY CHARTS AND PUBLICATIONS NOW PUBLISHED AND AVAILABLE NEW EDITIONS OF ADMIRALTY CHARTS AND PUBLICATIONS Publication dates of these charts reflect the dates shown on the Indian Government Charts. Title Title, limits and other remarks IN357 INT 7397...
New edition Week 26
ADMIRALTY CHARTS AND PUBLICATIONS NOW PUBLISHED AND AVAILABLE NEW EDITIONS OF ADMIRALTY CHARTS AND PUBLICATIONS New Editions of ADMIRALTY Charts published 26 June 2025 Title Title, limits and other remarks 118 Italy - West Coast, Ports in the Gulf of Genoa. A...