Cory Chouest had all SURTASS equipment removed and was returned to her original owners in 2008 completing nearly 20 years of service.

Originally used as a research platform in conjunction with the Amy Chouest, the Cory was later modified to carry an active and passive sonar system.

The mission of Cory Chouest is to directly support the Navy by using both passive and active low frequency sonar arrays to detect and track undersea threats.

[3] The Cory Chouest was chosen because of its central moon pool and because it was already equipped with an array of low frequency transmitters.

Planned transmissions had been for ten days, although owing to the bad weather conditions and the high failure rate of the transmitter elements, used at a frequency below their design frequency, the transmissions were terminated on the sixth day, when only two of the original ten transducers were still working.