they used to have a screw drive vehicle at Parris Island to go out into marshes and rescue recruits that thought they could walk across the pluff mud and escape the hell of Marine bootcamp. They couldnt...hahahha. Then you got that pesky tide rising so that when you are stuck....you are stuck hard and will drown if not rescued and you are below the high tide line. Just hope that it is not a full moon with offshore winds or you will be screwed at any height...LOL
__________________ I have a high art, I hurt with cruelty those who would damage me.- Archilochus, 650BC
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she's a "Brick.......House"
08 FJC, Brick, Auto, Nitto Terra Grapplers (295), ATrac, Locker, Budbuilt sliders, ToyTec 3" lift
84 FJ-60, blue, body lift, BFG AT on oem steelies, Warn Hubs, mostly original
Caterpillar Drives have been around for a while. The HUNT FOR RED OCTOBER featured such a drive in a Soviet Navy Typhoon Class submarine. In the case of a submarine there is theoretically no propellor cavitation (air bubble building up behind the propellor) so it's quiet. There are better ways to do that such as pump-jet propulsion, but I digress. The problem with a land vehicle using that motivation system is that (1) it's VERY hard to steer (harder than a tracked system) and (2) if you run it over rocks, the metal veins get broken up. It has some limited use in close littoral waters and on ice, but the bottom line is that tracks work better.
However, I agree, it's cool.
__________________ "L'audace, L'audace, Toujours l'audace!"
THE SCORPION véhicule tout terrain scorpion
скорпион сервисное транспортное средство
โตโยต้า จัตุรงค์ ยาง ล้อเลื่อน แมงป่อง
vier Radantrieb vom Straßenfahrzeug Skorpion
automóvil cuatro rueda Escorpión
蠍子, 豐田越野汽車
Нэвтрүүлэгч хилэнцэт хорхой
macchina fuoristrada lo Scorpione
Chrysler Marsh Screw Amphibian (1964)
Same principle as the DAF screw vehicle, this one can do 14 mph in the mud 8 mph in water and in the snow up to 20 mph.
The power came from a Chrysler 225 cubic inch, 140 hp, 6 cylinder gasoline engine. An automatic gearbox was used to make the screws turn.
On hard pavement the only way to operate was to roll side ways but not at the same speed as the DAF
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08 BLACK DIAMOND, OFFROAD PACKAGE, CQ,
WET OKOLE SEAT COVERS
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MORE MODS TO COME IN THE FUTURE RIGHT NOW TOO BUSY SAILING THE SEVEN SEAS WITH THE NAVY!!!!!!! :rocket
"Damn the torpedoes, Full speed Ahead"Admiral David Glasgow Farragut (1801-1870)
Caterpillar Drives have been around for a while. The HUNT FOR RED OCTOBER featured such a drive in a Soviet Navy Typhoon Class submarine. In the case of a submarine there is theoretically no propellor cavitation (air bubble building up behind the propellor) so it's quiet. There are better ways to do that such as pump-jet propulsion, but I digress. The problem with a land vehicle using that motivation system is that (1) it's VERY hard to steer (harder than a tracked system) and (2) if you run it over rocks, the metal veins get broken up. It has some limited use in close littoral waters and on ice, but the bottom line is that tracks work better.
However, I agree, it's cool.
The ZIL is older then me. Wait maybe I shouldn't admit that LOL. I believe the Russian version was featured in a 1960 volume of popular science.
Being a Navy man and a devout Tom Clancy fan I have a slight correction for you;
In Hunt for Red October they referred to the new drive as a "caterpillar drive" but when they explained it the drive system is really a theoretical magneto-hydrodynamic drive. No moving parts, the EM field is supposed to push the water not screws at all but it is purely theoretical no one has ever gotten it to work.
"L'audace, L'audace, Toujours l'audace!" 
:rocket 
Linear Mode
