

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 39
ADMIRALTY CHARTS AND PUBLICATIONS NOW PUBLISHED AND AVAILABLE NEW EDITIONS OF ADMIRALTY CHARTS AND PUBLICATIONS New Editions of ADMIRALTY Small Craft Charts published 25 September 2025 Title Title, limits and other remarks 5614_3 Approaches to Lowestoft. This chart is...
New Edition Week 37
ADMIRALTY CHARTS AND PUBLICATIONS NOW PUBLISHED AND AVAILABLE NEW EDITIONS OF ADMIRALTY CHARTS AND PUBLICATIONS New Editions of ADMIRALTY Charts published 11 September 2025 Title Title, limits and other remarks 869 INT 1311 International Chart Series, Sweden - West...
New Edition Week 36
ADMIRALTY CHARTS AND PUBLICATIONS NOW PUBLISHED AND AVAILABLE NEW EDITIONS OF ADMIRALTY CHARTS AND PUBLICATIONS New Editions of ADMIRALTY Charts published 04 September 2025 Title Title, limits and other remarks 272 North Sea Offshore Charts, Sheet 8. On publication of...