Q1: First, the easy one. This barrel roll is legal, yes? It satisfies the rules as written.
https://drive.google.com/open?id=0B-2uIhBGR9mXdXhRaWJ4c1ZBVTA&authuser=0
Q2: Now the hard one. In this situation, the large ship is flush against the small ship and at a perfect right angle. The nubs aren't in the way. Does a 1-Straight maneuver move the first ship enough to reach the other side?
a. Yes. It gets to move and act.
b. No. It collides, doesn't move, and doesn't act.
c. It depends on exactly how large your physical pieces are, down to the sub-millimeter.
d. Something else.
https://drive.google.com/open?id=0B-2uIhBGR9mXN2Z3SWxCRHcySE0&authuser=0