I really liked it, far more than I expected.
The hour started off rather badly as a low-budget 'Crimson Tide' knock-off, but once the actual drama started it got ALOT better.
Yes, there were many inaccuracies, I'm sure - but the show has balls. I just hope they can keep going and not chicken out on what they have started. Not every episode needs to be as good as this one or as action-filled, but there better be some repercussions to nuking Pakistan and the world-wide(?) announcement from the sub captain.