Stingray - Season 1 - Eps 17: The Big Gun
The Solistan's want to take over the world by destroying the west coast of the USA with their attack sub.(big gun 1) Stingray destroys the sub before it can do any damage. Hungry for revenge, the Solistan's want to destroy Marineville so they launch Big Gun 2. Marineville survives & Stingray follows it back to it's deep sea base & with Marina's help they destroy the Solistan's.
About Stingray

Title: Stingray
First Air Date: 1964-10-04
Last Air Date: 1965-07-04
Status: Ended
Rating: 6.8/10 (from 17 votes)
Language: EN
Seasons: 2
Total Episodes: 40
Network: Associated Television
Genres: Action & Adventure, Sci-Fi & Fantasy
Production Companies: AP Films (APF), ITC Entertainment
Synopsis
A British children's Supermarionation television series.
Cast

Lois Maxwell
Lt Atlantis Shore

Don Mason
Captain Troy Tempest

Ray Barrett
Commander Sam Shore

Robert Easton
Lieutenant George Lee Sheridan