You can't really invent the same thing several times. The Sea King helicopter isn't rated as an invention, as it's not really doing anything hugely new. It was developed by a team of engineers from a company called Sikorsky.
an RAF sea-king helicopter
the Sikorsky sea king.
The EH 101 Merlin replaces the Sea King in many navies and air forces
The top speed of a Sea King is approximately 165 mph.
I am wondering where was helicopter invented?
Nobody invented the helicopter in 1918
An engineer, Igor Sikorski, invented the helicopter.
No African American invented the helicopter. The first practical helicopter was invented by Igor Sikorski, a Russian American.
It is the VH-3D Sea King but is scheduled for replacement in the near future.
Igor Sikorsky invented the first practical helicopter around 1940
Igor Sikorsky invented the helicopter.
no