Type C1 submarine
# Type C1 submarine

Type C1 submarine may refer to:

* I-16-class submarine, also called Type C1 submarine or Type C submarine (Junsen Hei-gata), the 1st class submarine of the Imperial Japanese Navy
* Ha-1-class submarine, also called Type C1 submarine (C1-gata), the 3rd class submarine of the Imperial Japanese Navy
