Thunderbird 12 (TB-12) Multi Purpose Bulldozer

TB-12/Thunderbird 12 is a multi-purpose flat bed bulldozer-like vehicle carried aboard TB-3, which can lift extremely heavy weights. Equipped with high-powered shovel and extend-able platform. It has pressurized and heavy armored outer shell for underwater or fire fighting operation.

From Thunderbirds 2086 series.

TB-12/Thunderbird 12 first action shown in Thunderbirds 2086 episode 3 "One of A Kind". And shown it's amazing capability lifting stranded a bigger and heavier Thunderbird 2 out of the water at episode 10 "Star Crusher".

The TB-12-1 designation means that more than one unit assembled. 

Specification (TB-12): 

Crew: One (Driver/Operator).

Powerplant: (unconfirmed) Hybrid Electric Drive and Quad-Turbo Electric Diesel engines,
driving Caterpillar tracks on both sides and powering two heavy duty hydrolic jacks to raise the flat bed and lift heavy weight materials. 

Propulsion: 2 x reversible Caterpillar tracks. 
Maximum speed: 100 km/h (on road), 40 km/h (off road)
Range: Classified
Length: 20 meters
Weight: 150 tons

Guns:
None

Bombs and Missiles:
None

Others:
3D Holographic navigation and video camera system.
Infra-red heat seeking HD camera for Search and Rescue operation.
2 x High Illumination Head Lamps with a set of front roof flood lights.
A large heavy duty universal blade ("U blade") shovel.
Two heavy duty hydrolic jacks to raise the flat bed platform.
Two rear counter-ballast tanks.
Vehicle armor skin which provides armor protection to the mechanical systems and to the operator cabin.
Heavy-duty Towing Cables
Fiber optic drive-by-wire Ride Control System.
Multi function Advanced Data Link (MADL) communication system.
Advanced Mission and Semi AI controlled remote/auto-drive Computer.