Stingray (1964)

S1E12 A Christmas to Remember

To bring some holiday cheer to the orphaned son of a former WASP Aquanaut, Troy invites him to join the Stingray crew for a reenactment of a historic battle involving an abandoned enemy vessel. Unbeknownst to the crew, one of their members is still trapped aboard when Phones takes command. As Phones finds himself held at gunpoint, he must lure Troy into a dangerous trap. However, the resourceful Stingray captain manages to save his friend and unravel the mystery behind the enemy craft.