Navy SEAL SDV mini submarine.
https://s3-us-west-1.amazonaws.com/h..._launching.jpg
3:15 video:
https://www.youtube.com/watch?v=cgEP1pihx5g
More: https://theaviationist.com/2019/11/0...e-shadowy-sdv/
Previously:
https://www.homemadetools.net/forum/...209#post141732
https://www.homemadetools.net/forum/...934#post137540
https://www.homemadetools.net/forum/...364#post135219
https://www.homemadetools.net/forum/...209#post130545
https://www.homemadetools.net/forum/...2209#post75951
https://www.homemadetools.net/forum/...4385#post79850
