Quote:
Originally Posted by theducks
Navy tends to be more self contained over time. 30 days at sea.. No problem.
Put a Jet in the air for 30 days  , even with 'Air Tankers' 
Spaceships are closer to Submarines. High pressure (inside<->outside )differentials limited air, difficult to go outside to fix something 
Go Navy (I'm a bit biased  ) |
That's just the argument Ringo and Travis used in their Looking Glass series.
You might want to have a look at the claws that catch baencd - as a reference look a fellow writers work.