| Type | Transport | |
| Class | R 1 (33) | |
| Laid down | 1 Mar 1943 | Cantieri Riuniti dell'Adriatico, Monfalcone |
| Launched | 31 Oct 1943 |
|
| Commissioned | | |
| End service | | |
| Stricken | | |
| Loss date | 25 May 1944 | |
| Loss position | 45° 47'N, 13° 33'E | |
| History | Captured on the slipway by the Germans on 9th September 1943. Renamed UI-4. Heavily damaged during Allied air attacks on Monfalcone on 25th May 1944. Scrapped postwar. |
| Fate | |
Commands
| Commander | Date from | Date to | Command notes |
|---|
Ships hit
No ships hit by this submarine.
Patrols and events
| | Commander | Date | Time | Port | Arr. date | Arr. time | Arr. port | Miles | Description |
|---|
| | 10 Sep 1943 | | Monfalcone | 10 Sep 1943 | | Monfalcone | | Captured by the Germans. Renamed UIT-4 and launched on 21 October 1943. |
|
| | 25 May 1944 | | Monfalcone | 25 May 1944 | | Sunk | | Sunk in an air raid from 15.USAAF. As of 16 June 1944, damage had not yet been ascertained. Was to be raised and used for spare parts for UIT-6, |
2 entries. 2 total patrol entries (0 marked as war patrols) and 0 events.
