Thunderbirds Wiki
Thunderbirds Wiki

The 3E Submarine was a mini-submarine owned by The Hood, seen in Desperate Intruder. He used it as a base of operations to observe the treasure hunting expedition.

Technical Data

  • Beam: 3 metres
  • Displacement: 23,586 kilograms (submerged), 13,607 kilograms (surface)
  • Length: 11 metres
  • Power: 1 water-cooled atomic fusion reactor
  • Speed: 45 knots

Unloading Procedure

3E sub with transport truck

Main article: Transporter Vehicle

Sub Interiors

Periscope, video scan and photoscope

The submarine has a built-in periscope and video scan, enabling the Hood to keep watch while it is submerged. He can also convert the periscope into a photoscope to record all the data he can see.

Desperate Intruder

Treasure Hunter

When The Hood learns that International Rescue are heading to Lake Anasta to find treasure, he heads there in his truck carrying the submarine.

Destruction Of The Mini Sub

When Thunderbird 4 arrives, Hood fires a torpedo at it from his submarine, but he misses. The Hood fires again, and scores a hit. Thunderbird 4 isn't damaged inside, and Gordon turns around to go after The Hood. The Hood retreats, but Gordon fires a missile at his submarine and the engines flood. The submarine sinks and explodes, but The Hood manages to escape in time.


At least two cutaways of the 3E Submarine exist. Illustrated by Graham Bleathman, one appears in The International Rescue Book of Thunderbirds: FAB Cross-sections, and a second appeared in an issue of the Redan comic series.


Toy version seen in The Man from M.I.5.

  • An RC toy version of it is seen in the pool scene in The Man From MI.5. This "toy version" is of course the same model that was used to film all the exterior shots of the 3E submarine.
  • Confusingly, the submarine reads "3E" on its portside, whilst it reads "E3" on its starboard side.