Italian submarines in World War Two
Grongo (GG)
Grongo
| Type | Sea going | |
| Class | Tritone (type I) (26) | |
| Laid down | 1 Apr 1942 | Odero-Terni-Orlando, Muggiano |
| Launched | 6 May 1943 | |
| Commissioned | ||
| End service | ||
| Stricken | ||
| Loss date | 9 Sep 1943 | |
| Loss position | 44° 05'N, 9° 50'E | |
| History | Scuttled at La Spezia on 9th September 1943 to prevent her capture by the Germans. Raised and renamed UIT-20 but never completed. Destroyed in an air raid on Genoa on 4th September 1944. | |
| 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 | ||
|---|---|---|---|---|---|---|---|---|---|---|
| 6 May 1943 | La Spezia | 6 May 1943 | La Spezia | Launched at La Spezia. Had been assigned to X.Mas since 30 March 1943. | ||||||
| Ferrini, Renato | 11 Aug 1943 | 0915 | La Spezia | 11 Aug 1943 | 1820 | La Spezia | Trials. | |||
| Ferrini, Renato | 19 Aug 1943 | La Spezia | 19 Aug 1943 | La Spezia | Trials escorted by MAS 525. | |||||
| Ferrini, Renato | 9 Sep 1943 | La Spezia | 9 Sep 1943 | Scuttled | Scuttled (incomplete) after armistice. refloated by Germans and became UIT-20. | |||||
| 9 Sep 1943 | (0) La Spezia harbour. | At the Armistice, Grongo was unable to sail to join the Allies and was scuttled by her crew. She was later raised and became incorporated in the German Navy as UIT-20. | ||||||||
| 16 Mar 1944 | 16 Mar 1944 | Reported operational. | ||||||||
| 7 Aug 1944 | La Spezia | 9 Aug 1944 | Genoa | Passage La Spezia-Genoa (Note: it is not clear why the passage took so long, dates may be incorrect?). | ||||||
| 4 Sep 1944 | Genoa | 4 Sep 1944 | Sunk | Sunk by RAF raid. The wreck was later broken up. On 23 August 1944, the Germans had requested training crews for Grongo, Murena and Sparide. | ||||||
| 4 Sep 1944 | (0) Genoa harbour. | During an Allied air raid, UIT-20 (ex-Grongo) was sunk by bombs. | ||||||||
7 entries. 7 total patrol entries (0 marked as war patrols) and 2 events.