U4
| Drawing Information: | |
|---|---|
| Category: | Real Designs |
| Country: | Germany  |
| Type: |
Submarine 
» Coastal Submarine |
| Class: | U3 |
| Ship: | U4 |
| Operator: | Military |
| Date Depicted: | 1910 |
| Date Submitted: | Oct 12, 2018 |
| Last Revised: | Mar 3, 2024 |
| View(s): | Starboard Elevation |
| Author(s): | Garlicdesign, |