Tom, the sea travel options are irreversible, which is quite a change from the other travel options, which allow you to cancel movement or turn around. I imagine that some of the phone-players might click the wrong travel link from time to time.
Especially for long disembarking times, this is a problem. I currently have this on sea_travel.php:
Sallowcape Drift
You are nearing the shores of Sallowwild.
You will reach the coast in about 24 hours.I have no option to turn back. Considering things change within 24 hours, I now wish I could land in Sallowtown instead. It should be possible to turn the boats around at a cost in time, shouldn't it?