PortToPort Online and AtoBviaC Web Service - Annual Subscription
Access to PortToPort Online is charged as an annual subscription,
with prices based on the number of distance calculations required for the whole year.
Access to the AtoBviaC Web Service is charged in the same way, with additional functionality available as optional extras (see charges below).
The same account can be used for both PortToPort Online and the AtoBviaC Web Service.
One 'distance calculation' is a distance or route calculated between two ports. A voyage consisting of three ports, in other words two legs, would result in two distance calculations being deducted from your account.
Calculating additional routes between the same two ports, for example with different routing options, will not deduct a further 'distance calculation' from your account within a short time period of the original calculation.
PLEASE NOTE : Applying an Annual Subscription purchase to your account is not yet an automated process, your account will be updated and you will normally be advised by email within a working day.