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IFE's most ambitious vehicle is Hercules. Like Little Hercules, it is a neutrally buoyant ROV, moved about by thrusters and equipped with a High Definition video camera. But Hercules is specially designed for excavation - digging and recovering artifacts from ancient shipwrecks in the deep ocean.
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Echo is a side scan sonar tow sled, an instrument that uses sound to create images of the sea floor and objects on it. Echo is towed 50-100 meters above the sea floor and emits high-pitched "chirps" of sound diagonally through the water.
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Argus and Little Hercules |
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Argus and Little Hercules are designed to operate together. The tow sled, Argus, hangs on the end of a long cable dangling from the ship. Argus is maneuvered primarily by moving the ship and raising and lowering the cable. Thrusters (electric motors with propellers) on Argus allow the pilot to aim its lights and cameras toward sites of interest and Little Hercules.
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Institute for Exploration 
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