Make it so that portals on ships can link with portals in the world and vice versa

I would suggest adding a block to replace the corners of nether portal so you can unlink the nether/overworld position. Something like fractured obsidian, can insert items into the cracks to tune the portal to other portals. You could get this from piglin bartering.

to prevent issues with more than 2 portals on the same frequency the portals would link to the closest tuned portal. Doing this you could make a summer and winter dock for your airship and have separate nether hubs

it works on new version with use of interactive