Yay data...
So, if we say that having 2 crew (including the player) means that the drive won't break down: out of 22 ships, 5 will always have at least 2 crew(Always Crew >=2). That doesn't mean that both will necessarily have the engineering skill...
An additional 11 have the capability have having more than 1 crew member (Can Crew >=2), and 6 can never have more than 1 crew (Crew = 1).
None of the 3 starting ships have the capability to have more than 1 crew.