Rescue Submarine Power Plant: Twin Atomic Generators (Main), Atomic Pile Propulsion: Turbo Drive, Jet Engines (Surface cruising) Top Speed: ?
The Thunderbird 4 (TB4) is a bright orange-yellow mini submarine which was carried into action most often within Thunderbird 2’s pod #4. (TB4 was dropped from low altitude into the water.) TB4 then fired a battery of rocket tubes to power out of the TB2 pod and into the ocean, where TB4’s Turbo Drive propulsion system took over. Port and starboard mounted jet engines provided propulsion for surface cruising. It was also capable of independent underwater launchings from the end of the Tracy Island runaway, as seen in “Terror in New York City.” TB4 was used to perform underwater rescue operations in “Operation Crash Dive”, “Day of Disaster”, “The Man from MI5”, etc. Several different versions of TB4 were constructed for filming in “Thunderbirds.” They varied to a great degree in overall contour, ranging in size from 3 inches to 13 inches to 20 inches. All of these miniatures were made from fiberglass and had small plasticine figures of Gordon Tracy in the cockpit and working lights incor
