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• Name Pierre Poulin
• Age 31
• Profession Robot programmer, mechanical
  design.
• Scholarship Degree in mechanical design.
• Hobby Quad bike riding, modeling,
  rock-climbing.

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• Project overview
• how it all started! The Neptune project influence
  and it's all in the gene...
• from 1 atm to dry-ambient the pressure choose
  for me!
• other considerations money, time, work place,

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• Budget
• Total budget planned 1500 cdn.
• Spend today 700 for the frame, ballast system,
  plumbing and windows.
• Supplied by my father the air cylinder, the pony
  tank, the 1 stage regulator.
• Electrical planned 650 for 2 minn-kota 28lbs
  and 2 deep-cycle batteries.
• Im pretty confident to be able to achieve the
  budget I have set.

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• The Two Phases
• A budget safe choice...
• Phase I to have a ship that is air-tight, have
  ballast system operational, all safety features,
  and can raise and drop into the water without
  problem.
• Phase II will feature everything electrical.
  motors and light.

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• Timeline
• project started on January 2003.
• phase I should be completed during winter
  2003-2004.
• phase II (complete project) should be completed
  for next summer 2004.

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• Determine Design

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• Build Frame

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• Add Shell

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• Add other components

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• Specifications
• Displacement 1092 lbs.
• Habitable volume 17.5 cf.
• Over-all dimensions 77" long, 34" wide, 38"
  high.
• Air supply one 220 cf cylinder at 2000 psi. (12
  time the habitable at 1 atm)
• Intended operating depth 30 feet.
• Max depth 250 feet. (the 125 psi system could
  not blow ballast deeper then 250 feet)

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• Safety Features
• drop weight can be dropped from inside or outside
  the sub
• pony tank inside.
• ballast can be operated from outside (divers)
• flooding valve.
• approximately 12 hours of autonomy at 30 feet.
• independent small air reserve for emergency
  ballast operation.
• hatch can be opened from in and outside of the
  sub.
• air regulator for external diver.

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• Habitable pressure control
• The 3 alternatives
• scuba regulator
• pressure relief valve
• natural pressure equalisation.

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• Buoyancy Control
• the use of a 5/3 pneumatic valve, pneumatic
  cylinder and piston.

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• Propulsion
• 2 minn-kota 12V 28 pound of thrust each.
• One on each side of the sub.

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• Ballast
• I have decided to build soft ballast but they can
  be used as variable ballast tank when I close a
  valve. The ballast can be operated even if sub is
  upside down.

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• Pressure relief valve
• I will use a scuba diver first stage pressure
  relief valve to go from 2000 psi to 125 psi.

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• The Neptune Project

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• THE END