2004:Thunderbird 4

Thunderbird 4 is an underwater vehicle used by International Rescue.

Technical data
Crew: 1. Engines: 2 Hackenbacker inchworm engines. Height including rear rudder: 3.7 metres (12 feet). Length: 8 metres (26 feet). Maximum diving depth: 11,000 metres (36,000 feet). Maximum speed (surface): 185 km/h (115 mph). Maximum speed (underwater): 278 km/h (173 mph). Power source: hydrogen fuel cell power plant. Weight: 13 tonnes. Width including rear aquaplanes: 5 metres (16.5 feet).