Conversation so far:
What is the H-4 hercules?
The Hughes H-4 Hercules is a prototype strategic airlift flying boat designed and built by the Hughes Aircraft Company.
What was the use of the H-4 Hercules flying boat?
HK-1 Hercules flying boat was to be used to transport troops and equipment across the Atlantic as an alternative to seagoing troop transport ships.
How much did the H-4 Hercules cost to make?
The H-4 Hercules cost $2.5 million to make.
Was the H-4 Hercules used for many missions?
The Spruce Goose's lifting capacity and ceiling were never tested. The company disbanded the H-4 Hercules project after Hughes' death in 1976.

Question: Did the boat have many critics?
Self-contained rewrite: Did the H-4 Hercules have many critics?