The last Martin JRM Mars flying boat, Philippine Mars, retired after a career of almost 80 years, with its final flight ...

Martin tried to modify the SeaMaster concept into an eight-engine civilian airliner called the SeaMistress, and also toyed with the notion of a nuclear-powered flying boat and a supersonic seaplane.

The hulking vessel is one of the last two remaining Martin JRM flying boats, according to a report in Vintage Aviation News. The Philippine Wars saw action in the Second World War, first as a ...