The Sikorsky S-61L and S-61N are civil variants of the successful SH-3 Sea King helicopter. They are two of the most widely used airliner and oil rig support helicopters built.
Made by Sikorsky Aircraft.
It is the successor of the Sikorsky SH-3 Sea King ,
Sikorsky S-61 is the predecessor of the Sikorsky S-61R.