The
T-38 amphibious scout tank was a
Soviet amphibious light tank that saw service in
World War II. Developed as a modernized version of the earlier
T-37A light tank, the T-38 proved to be only a moderate improvement over its predecessor, and was eventually replaced in 1940 by the
T-40.
Source: Wikipedia
https://en.wikipedia.org/wiki/T-38_tank