[2019] ETA - On the ability to rename Ship?

It was by design that players weren't able to rename ships, as we had some intentions surrounding keeping a log for each boat on board, in order to follow it's 'voyage'. Whilst the renaming-prevention implementation may need some work (as highlighted above), there is an argument that it be scrapped until that entire system is in place. So whilst there isn't an ETA right now, it may be something that you see changed in the future.