Linear game

Any other games that do this?

Almost every fucking JRPG ever?

Are you fucking kidding?

Then name some

not a boat but in Pokemon Gold and Silver when you get Surf the game kinda opens up for like an hour or two and then closes back up only to open up more than any other game in the series ever did since then.

...

same happened in FF3 but it was way cooler because you kamikazed a mountain that was blocking your path.

Not him but pretty much every Final Fantasy does this

2 doesn't.
If 3 does it it's super late in the game
4 doesn't.
5 doesn't.
6 doesn't when you get the airship in the world of balance, the non-linearity is more inherit to the world of ruin than your transport

what would you call the airship and spacewhale?

Most of them do it multiple times, it's most prominent in 10 as it only happens once.