The Martin Mars was designed in the World War 2 era for a large flying boat patrol plane but was modified to a transport aircraft it had a rough start as the engines caught fire and left a hole in the side of the aircraft and the first flight was delayed and was the largest flying boat operated and is also the Canadian fire fighter plane
Specs
Top speed : 356 kph
Wingspan :200 ft
Capacity :15,000 kg
Length :35.74 m
Width. :4.11 m
Height. :15 m beached