RC Komatsu D-155W Underwater Video
 

Serious stuff here! Don't know a lot about them, other than there seem to be at least two in Japan.

<iframe width="420" height="315" src="http://www.youtube.com/embed/bPHKVLZ6-ug" frameborder="0" allowfullscreen></iframe>

Don't know if I did that right so here's the link.

http://www.youtube.com/watch?v=bPHKV...ture=endscreen

Re: RC Komatsu D-155W Underwater Video
 

This is a very unique machine. It is diesel driven, just as the standard D155, except that the engine and driveline compartments are water tight. The hydraulically-raised snorkel is multi-tube with the inner-most being the exhaust, and is taller than the outer jacket. Fresh air enters between the inner and outer tubes. All driveline components are vented to the engine compartment. It was designed to maintain port areas where cargo ships docked, and as you can see on the video, is radio-controlled, plus it has lights and camera capability. It is out of production, being replaced by long-reach excavators. Would be a great model build!

Ken