a great show, and you can clearly see this show as a less campy Star Trek - notice similarities in the ships, the opening sequuence and the characters.
here are some oddities in episodes 8 and 9 -
they don't pay for the beer at the bar? they either leave the female guest with the tab, or dine and dash....so, why did the barman serve them again the next day?
also, the Admiral smokes in the common area of the sub-
they find a school of giant hungry catfish (the size of city buses) and then they decide to leave the sub and go swiming to see what else is around? who volunteers for a mission like that?
someone did not know the difference between an ICBM and a satelite?
the Admiral himself disarms a nuke warhead with less than a minute to spare - i guess everybody else was busy?
honestly - this is a great TV show. they don't make them like this an more.