My Homemade Submarine

This is a video about my homemade submarine, which I've been working on off and on for the last 2 years. I'm planning to make some videos with it in the coming weeks, so I thought it would be a good idea to do an introductory video about how i designed/built it.

It's a "semi-wet ambient" type submarine, meaning the pressure inside is the same as the outside water pressure, and the cabin is partially flooded. The pilot and passenger sit in a bubble of trapped air underwater that's equivalent to pushing a cup upside down in your sink, similar to a diving bell.

Power for propulsion, pumps, and lights is provided by a pair of 12V / 100AH lead acid batteries, which are sealed off against water entry, and have their terminals potted in rubber to prevent corrosion (in future videos, the batteries will be series-connected for 24V). Pneumatics for cabin air and buoyancy control come from a pair of 120 Cubic ft steel air tanks pressurized to 4,000 psi. I have an adapter that allows me to connect regular hardware store NPT fittings to the diving regulators on the tanks.

Motors are 12V/30A saltwater trolling motors made by newport that allow me to cruise at about ~3 knots surfaced and about 2 knots submerged. In future videos, I'll be running Turnigy 6374 brushless outrunners specially modified for underwater use with 7.25x5 3 bladed props.

My hope is to eventually use this sub to explore reefs and shipwrecks along the Florida coast.

Music:
Serge Pavkin - Intergalactic
Serge Pavkin - Fractal
Heatley Bros. - Dimension Drift
Serge Pavkin - Universe

Видео My Homemade Submarine канала Hyperspace Pirate