This is a R.U.C. (Riverine Utility Craft) it was used in the early to mid 70's to fish recruits out of the swamps after they went AWOL from MCRD Parris Island.
Powered by twin Chrysler big blocks.
A friend of mine who was an MP stationed at Parris Island sent me the picture with some stories about how they used it to fish AWOL recruits from the swamps there. From what he's told me that monster is loud, loud, loud!
Disappointing results in the Marsh Screw tests did not end ambitions for screw-type mobility systems. In 1969 Chrysler produced a much larger vehicle, the Riverine Utility Craft (RUC) for the Navy. The RUC traveled on two aluminum rotors, 39 inches in diameter and powered by twin Chrysler 440-cubic-inch automobile engines. A WES test program requested by the Navy imitated the earlier Marsh Screw investigations, employing sites in south Louisiana similar to Southeast Asian environments. Maximum speed attained on water reached an impressive 15.7 knots, while speeds on marshy terrain improved to nearly 25 knots. However, speeds on firm soils proved disappointing, reaching only 3.6 knots. In later tests in rice paddies, RUCs tended to hang up on earthen dikes. Despite efforts to the contrary, non-wheeled vehicles failed to compete seriously with their more conventional wheeled and tracked counterparts.19
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