Underwater Sports on display in Seattle WA circa 1969?
Carsten Standfuss provides more information.
Hagenburg (Porpoise) Germany 1964 is made from GRP
Max Depth: 50 meters
Length: 3.1 meters
Beam: 1.6 meters
Weight: 0.6 tons
2 Thrusters each 0.5 kw.
Speed: 3.2 knots for 2.5 hours
Was build in 5 weeks by Graf Hagenburg a well known Aircraft pilot (artist). Prototype was used in 1964 with over 200 dives down to 48 m. Some other units were built. It is also displayed at Busby page 68 top left.
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