Stingray (1964)

S1E30 A Nut for Marineville

Shore has a rocky start with Professor Burgoyne, the brilliant scientist tasked with creating a powerful missile to eliminate an unstoppable vessel approaching Marineville. After a lab explosion, the Professor is thought to be lost, but he surprisingly returns, revealing that he has completed his mission successfully. With the advanced missile ready, Stingray launches into action to confront and destroy the hostile submarine threatening their waters.