

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 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...
New Edition Week 25
ADMIRALTY CHARTS AND PUBLICATIONS NOW PUBLISHED AND AVAILABLE NEW EDITIONS OF ADMIRALTY CHARTS AND PUBLICATIONS New Editions of ADMIRALTY Charts published 19 June 2025 Title Title, limits and other remarks 474 West Indies – Trinidad and Tobago, Port of Spain and...
New Edition Week 24
ADMIRALTY CHARTS AND PUBLICATIONS NOW PUBLISHED AND AVAILABLE NEW EDITIONS OF ADMIRALTY CHARTS AND PUBLICATIONS New Editions of ADMIRALTY Charts published 12 June 2025 Title Title, limits and other remarks 520 South America - North East Coast, Cayenne to São Luís....