USCGC Thetis (WMEC-910) is a United States Coast Guard Famous-class medium endurance cutter.

[1] Her duties include law enforcement, search and rescue, homeland security, and national defense.

As part of Operation Martillo, the Thetis conducted drug interdiction missions in the Eastern Pacific, along the coasts of Central and South America.

[3] In December 2021, after visiting Fortaleza in Brazil, the Thetis escorted the new fast response cutters Glen Harris and Emlen Tunnell across the Atlantic Ocean on the way to their assigned homeport of Manama, Bahrain.

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