I profess that I don't understand Japanese people. I have nothing against them (they seem to be wonderful, hard-working people); I just don't understand the movies they make. Case in point is "Mighty Jack".
Someone thought that a combination of a submarine and a jet plane used as a crime-fighting tool would make a great movie. Heck, give them credit for originality; we partly ripped off the concept years later in order to give David Hasselhoff his showbiz break (Nightrider). Unfortunately, it doesn't quite come off.
Japan, in full post-war self-flagellation, has yet another enemy which seeks its destruction. No, not a prehistoric monster, but Q, a crime syndicate. (Somewhere, John Delancey's Star Trek character is suing for copyright infringement.) Mighty Jack is the weapon of choice to fight against the second-rate Ernst Blofelds of Q. We're not given much of an opportunity to see Mighty Jack actually do anything militarily; however, we do get to see plenty of banked turns.
When Mighty Jack acts as a submarine, it sinks like a rock. Feel free to add in more baking soda at any time!! For whatever reason, the crew dresses quite dapper in jackets and white shirts. They may not be the most sophisticated warriors out there, but they do dress well!
Mighty Jack's big wig is an old Japanese man who sits in his office thinking in a western voice while he speaks fluent Japanese. It has some interesting spy stuff, but not enough to keep you from that bathroom run.
Sterno says keep Mighty Jack grounded.