Alexander Foreman's page

2 person DIY submarine concept

 Surface configuration with generator running


  • has an open-source submarine project that has never made any real progress
  • I read the requirements for their sub and was sure I could come up with a simple design that could meet their requirements (i.e. trailerable, small, under 2 ton etc)
  • Once I have developed thew idea I may submit it to Psubs for further development by their experts

 Submerged configuration on battery power


  • Stats:
    • Estimated weight 1.5 ton
    • 1 pilot and optional 1 passenger
    • Set up and launch by one person only
    • Trailer launched
  • Pressure hull:
    • 5mm thick galvanized steel pressure vessal, 75mm diameter
  • Propulsion:
    • 4 x 75 lbs thrust trolling motors
      • Filled with mineral oil and fitted with excess oil reservoir
      • Fitted into a duct housing that can be tilted vertically
    • 1 x 75 lbs thrust trolling motor fitted horizontally for turning
    • 10 x 100 amp hour lead acid batteries
      • Fitted into external battery box filled with oil
    • 1 x small petrol generator
      • Fitted in pressure vessal behind conning tower
      • Used only to power motors when on surface to increase surface range
      • NOT used for recharging batteries
  • Boyancy:
    • 2 x 250 litre main ballast tanks located forward and rear
    • 1 x trim tank under seat in pressure hull
    • 2 x compressed air cylinders
  • Life support:
    • Oxygen cylinder and carbon dioxide scrubbers

Planned performance:

  • Crush depth 200'
  • Test depth 150'
  • Operational depth 100'
  • Dive time 4 hours

 Cutaway diagram

 free counters