The naval ensign of the [b][[Soviet navy]][/b]. The most-commonly depicted flag consists of a white field with a [[red star]] on the left side, red [[hammer and sickle]] on the right side, and a single light blue stripe on the bottom. Post #4787957 as an example.

See the "list of Soviet navy flags on Wikipedia":[https://en.wikipedia.org/wiki/List_of_Soviet_navy_flags] for more variants.
soviet navy flag