[quote=@Blabbo]
<Snipped quote by Host>

The surprise?
[/quote]

Yes, the surprise.

[quote=@Intrepid]
<Snipped quote by Blabbo>

Nah... Whiskey. The good stuff.

<Snipped quote by Host>

A good understanding of mechanics and physics for one. But other than that, I'm not sure what you're getting at.
[/quote]

What do you have to think about when building for space travel instead of something like sea travel?