The Steam Packet Company says it will be contacting all passengers affecting by the cancellation of TT 2020.
The organisation has confirmed anyone due to travel for this years racing fortnight between May 30 and June 13 will be offered a full refund or given priority on equivalent sailings for TT 2021.
Officials there say once a provisional timetable for next years occasion is confirmed by port authorities, they will e-mail customers with an automated rebooking or refund process.
Amendment fees have also been waived for now to allow customers to book alternative services.
Two more schemes backed by government fund
Island to get Bikesafe scheme for first time
Jurby Junk's Stella dies aged 90
No plans to publish UK's assisted dying letters
Burst water main disrupts Onchan supply
Government advice following spike in data breaches
Plans for four-foot flood walls at Ramsey harbour
Garage blaze in the early hours of this morning