Using ATT mariners to make tidal height and tidal stream predictions for more than 7,000 ports and 3,000 tidal streams worldwide.

Version 18 will allow the UKHO to send new tidal data to mariners through ATT on a more frequent basis, so that they access the latest tidal data when making predictions.

Furthermore, as part of ADP Version 18, certificates will show ATT's update status in the same format as ADMIRALTY Digital List of Lights (ADLL) and ADMIRALTY Digital Radio Signals to ensure compliance.

Additionally, UKHO added its ADMIRALTY e-Nautical Publications (AENP) updates on to the ADP weekly update disc. 

Susie Alder, Product Manager at the UKHO, noted: "There are also efficiency benefits to be realised through this update and proper use of all ADP's functionality, in terms of the time taken by bridge crews in planning their voyage. Accurate tidal data gives mariners the certainty they need to operate in the industry's competitive market environment. The software will also ensure that they can demonstrate compliance, by showing the ATT update status on the certificate in the same way as ADLL and ADRS."