Weight in air = 20 tons

Length = 37 ft.

Max. Safe sea state = 3.5

Draft in salt water = 8.5 ft. minimum

Surface speed = Est. 10 knts. with external fairing

Surface Speed without fairing = 3 knts.
Submerged speed = with Ext. Fairing
5 kts.

Maximum diving depth = 305 m.

Crew = Pilot and copilot

Passengers = 4 or 5 depending on rules

Underwater Telephone = Multi frequency 4 mile range

Under water life support = 72 hrs.