Are leashed dogs allowed on the tour?

If it's a service dog maybe

Not that I know. Although service dogs may possibly be admitted. You should check before you go.

Service dogs are allowed and you can use the elevator, as far as walking through the ship it'll be difficult.

No they are not

No.

I dont believe a dog could make it through the ship, actually. The ladders are extremely narrow and steep when going between majority of stops.

Maybe service dog...

I don't think so