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The first sealing test has been performed with the sub's core structure/hull/skeleton. The electronics module and actuator drives as well as the rear propulsion system were not installed for this test as they were not required and aren't done anyway. Here are some images of the test at the Claire Small pool on Friday, 3/31, 2006. <br> This is the sub on its stand with the majority of the structure assembled. Rear cavity cups have not been installed yet in this photo. <img src="http://www.calamar-e.com/images/sub_stand2.jpg"> <br> Here's the sub strapped to a floating medical/rescue gurney/backboard for transportation. We also performed the main leakage test with it mounted to this for stability and weighting purposes. The right rear cavity cup is not installed either. At this point we still need it to work on the actuators with so a hole-expander and silicone sealant was used to seal that hole for this test. <img src="http://www.calamar-e.com/images/test1_board1.jpg"> <br> This is the sub just floating. As it is in this photo (without the components mentioned above), it is approximately 75 lbs underweight to achieve neutral buoyancy. <img src="http://www.calamar-e.com/images/test1_pool1.jpg"> <br> This is the inside of the sub after the 2nd sealing and submersion. The paper was placed over locations we expected to see leakage occur (if it was to occur) and where the water would gather (the bottom). The main O-Ring mount also had toilet paper on it earlier but we didn't have a camera present for that. <img src="http://www.calamar-e.com/images/test1_inside1.jpg"> <img src="http://www.calamar-e.com/images/test1_inside2.jpg"> <br> The result of this qualitative test was that the sub did not leak at all. The images above show the paper as 100% dry indicating no water entered the vehicle. We also observed, visually, as we submerged it to ensure no water was leaking in. Our main seal and actuator cavities sealed perfectly which is excellent news for us