The C-1 Trader was a Carrier-Onboard-Delivery (COD) variant of the S-2 Tracker. It was replaced by a similar version of the E-2 Hawkeye, the C-2 Greyhound.
The C-1 Trader grew out of a need by the US Navy for a new anti submarine airplane. In response to this Grumman started development on a prototype twin-engine, high-wing aircraft which it designated the G-89.
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