ADMIRALTY TotalTide (ATT) is the world's most comprehensive tidal prediction program, providing bridge crews with fast, accurate tidal height and tidal stream predictions for more than 7,000 ports and 3,000 tidal streams worldwide.

Key features of ATT include:​​

​Accurate tidal predictions, reducing the risk of human error and providing bridge crews with an easy means of viewing both under-keel and safe overhead clearances

Approved for use by the Flag States of over three quarters of ships trading internationally, with certification to aid inspections

More features of ADMIRALTY TotalTide

Here to help

Once you’ve chosen ATT we can offer you guidance to help you get the most from the service. Support items include installation guides and YouTube tutorials, with further support available from chart agents and our in-house customer service team.

Find out more about support for ATT