I will be travelling on this route in a couple of weeks, so I was wondering if there are any ferries that offer online check-in?
The Stockholm Tallinn ferry route connects Sweden with Estonia and is currently operated by 2 ferry companies. The Tallink Silja service runs up to 7 times per week with a sailing duration of around 15 hours 30 minutes while the St Peter Line service runs up to 1 times per week with a duration from 16 hr 30 min.
Neither line offers online checkin for that route.
While Tallink does have online check-in, it is only offered for Tallinn-Helsinki and Helsinki-Tallinn.
Does not appear to have an online option