Thunderbird 4 is International Rescue's One-man submersible utility vessel.

Technical dataEdit

  • Type: Underwater rescue craft
  • Designer: Brains
  • Built: 2063


  • Length: 30 feet
  • Width: 11 feet
  • Weight: 16 tons


  • Power source: Twin atomic fusion reactor
  • Engines: 6 Electrically driven reversible axial-flow turbine impellers


  • Underwater speed 160 knots
  • Surface cruising 40 knots
  • Emergency launch speed: 30 knots
  • Maximum operating depth: 30,000 feet
  • Range: Unlimited

Crew and AccommodationEdit

  • Aquanaut: Gordon Tracy
  • Back-up crew None
  • Hangar: Thunderbird 2, Pod 4
  • Launch procedure: Ocean launch from Thunderbird 2, Pod 4
  • Emergency launch Onboard hover-jets, moving craft to tilting ramp built into the end of the island's runway.

On Board EquipmentEdit

  • SCUBA diving gear
  • Spot Light Array
  • High Intensity Laser Cutter
  • Battering ram
  • Sonar Sensor
  • Missiles

Hangar and LaunchEdit

Thunderbird 4 is kept ready for action in the same hangar as Thunderbird 2. Due to limited range it is usually transported to the rescue zone in pod No. 4 or 6, by Thunderbird 2. It can however launch from a slipway nearby.

Launch SequenceEdit

Main article: Thunderbird 4 Launch Sequence


Underwater rescue or where access requires underwater transportation.



  • Thunderbird 4 is the smallest craft of all the Thunderbirds.



Further ReadingEdit

More information on Thunderbird 4, can be found on the Thunderbirds wiki:

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