The 1929 Mack-Craft Amphibian Dolphin was an 8-10 place cabin high wing monoplane amphibian. The one built was equipped with a plush interior with the amenities of a surface yacht and also equipped with an outboard motor for travel on water. It was priced at $35,000.

 

It was reported as powered by a 525hp P&W Hornet or Wright Cyclone pusher but one photo shows an inline engine.

 

Engine: Wright Cyclone, 525hp

Wingspan: 57 ft 0 in

Length: 46 ft 8 ft

Useful load: 2200 lb

Fuel capacity: 2 x 160 USG

Max speed: 150 mph

Cruise speed: 125 mph

Stall: 55 mph

Range: 1300 mi

Ceiling: 20,000 ft