Before revision: The sea-viewing wide field-of-view sensor(SeaWiFS) was a follow-on to CZCS, launched in 1997.
After revision: CZWS was the first satellite ocean color sensor, and after it stopped observing in 1986, there was a 10-year gap in records until Japan launched the Ocean Color Temperature Scanner (OCTS) in 1996, and the United States launched the Sea-viewing Wide Field-of-view Sensor (SeaWiFS) in 1997.