There is a similar plugin for sponge?
Indeed, there is the magnificent Ships plugin.
There was also some talk of a MoveCraft port some time back, but nothing eventuated, as Spongie was too young to fly. Perhaps one day someone will revisit that too, now that SpongeAPI has matured somewhat…
Please note that ships is still in the prealpha stage and has only been tested with API 6. So expect things not to work properly with it and missing features.
If there is a bug that is really annoying you or a missing feature you need. I can focus on it if you wish.
When do you plan to add support for API 7?
Hopefully in the update after the one that should be coming out shortly