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| Chis holds the submersible wires |
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| Rod swims with the submersible to deeper water |
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| Rod uses the underwater camera to photograph the submersible |
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| Andy, Chris, and Ben control the submersible while Rod swims |
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| Ben holds the wires as the submersible swims |
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| Sam cuts up pieces of foam to balance the SeaPerch |
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| Ben adjusts the SeaPerch wire |
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| The water sampler |
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| Ben and Chris secure the frame |
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| The submersible ready for another trial |
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| The depth sensor |
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| Rod and the Perch |
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| Rod watches the submersible from the water while Ben watches from above |
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| Ben adds extra floatation rings |
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| Ben adjusts the floatation rings |
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| The depth sensor shows a reading of 3.4' in the 4.5' zone (the difference is the height of the submersible) |
Video of the SeaPerch in the water
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| The upperward facing propellor pushes the SeaPerch below the water's surface. Notice the depth sensor hangin below |
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| The submersible under the surface |
Really interesting article. I have found this company that provide the type of equipment you are looking for. Water testing equipment
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