At least two classes of frigates have been named Thetis after their lead ship:
- Thetis-class frigate, a pair of steam frigates built for British Royal Navy in the 1840s and then sold to the Prussian Navy
- Thetis-class patrol vessel, three patrol vessels of the Royal Danish Navy built in the late 1980s and early 1990s
List of ships with the same or similar names
This article includes a list of ships with the same or similar names. If an internal link for a specific ship led you here, you may wish to change the link to point directly to the intended ship article, if one exists.
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