NMS Delfinul
| NMS Delfinul in June 1936 | |
| History | |
|---|---|
| Romania | |
| Name | NMS Delfinul | 
| Namesake | dolphin | 
| Builder | Italian naval base and shipyard, Fiume | 
| Laid down | 1927 | 
| Launched | 1930 | 
| Completed | 1931 | 
| Commissioned | 1936 | 
| Out of service | 1944 | 
| Refit | Galați shipyard, starting late 1942 | 
| Reinstated | 1951 | 
| Fate | Stricken 1957 | 
| Soviet Union | |
| Name | TS-3 | 
| Commissioned | 1944 | 
| Decommissioned | 1945 | 
| Fate | Returned to Romania in 1951 | 
| General characteristics | |
| Displacement | 
 | 
| Length | 68 m (223 ft) | 
| Beam | 5.9 m (19 ft) | 
| Draught | 3.6 m (12 ft) | 
| Propulsion | 2 Sulzer diesel engines, 2 electric motors, 2 shafts | 
| Speed | 
 | 
| Range | 2,000 nautical miles (3,704 km; 2,302 mi) | 
| Complement | 55 | 
| Armament | 
 | 
NMS Delfinul (The Dolphin) was a Romanian submarine that served in the Black Sea during the Second World War. It was the first submarine of the Romanian Navy, built in Italy under Romanian supervision.