Caulk was needed to waterproof the solenoid valve.
The ballast tank, the solenoid valve and the pump were attached to the submersible frame using electrical tape. Below are pictures of the group assembling the frame and of the completed submersible.
Once completed, the submersible was tested at the Drexel Athletic Center. The first trial can be seen below. This shows that the ballast tank system holds pressure and can successfully pump water in and out.
The following video shows the submersible diving and resurfacing in the water. It also shows the effectiveness of the ballast tank in the submersible.
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