Rocky & Bullwinkle - Jet Fuel (12) - Ace Is Wild or The Flying Casket - S1.E30

The auto-controlled spy sub goes slightly out of control, blowing up an entire foreign port.

Meanwhile, after fastening Rocky and Bullwinkle into one-way seatbelts, stewardess Natasha bails out, while Boris gleefully smashes instruments in the pilot's compartment. It looks like a smash landing ahead.