

Our brand new and improved secure online web shop is now open. We are committed to
providing you with a safe and secure online shopping experience. We use industry leading secure
server technology that implements Secure Socket Layering (SSL) to protect your details and
assist your shopping experience. SSL is the industry standard for encryption and enables
millions of secure online transactions everyday.
In summary, your payment details and personal details are safe when you order with Thomas Gunn Navigation Services Ltd.
Our ever expanding product range includes worldwide coverage of HO charts & publications,
nautical books, navigation equipment, navigation lights, chart plotting instruments and stationery,
electronic charts, digital publications, chart plotting software and other marine related software.
Thomas Gunn Navigation Services Ltd are one of the world's leading International Admiralty Chart Agents. Our company specialises in the supply of navigational products and associated services to the shipping industry on a worldwide basis.
Thomas Gunn Navigation Services Ltd have developed an onboard chart management
system called TGNS Voyager. The Voyager software is a fully automated onboard chart
management system that provides the mariner with a personalised database of charts,
publications and Notices To Mariners (NTM's) organised in a convenient folio system.
The Voyager service provides weekly updates to the ships index and Notices to Mariners
(NTMs) and Tracings via Internet or Email. The Voyager Data Server compresses the data
before sending it to the user to reduce the file sizes to a minimum. The ship only
receives the files relevant to its chart outfit, further reducing the file sizes.