| 1st Submarine Flotilla | |
|---|---|
Coat of arms of the 1st Submarine Flotilla |
|
| Active | 1904– |
| Country | Sweden |
| Allegiance | Swedish Armed Forces |
| Branch | Swedish Navy |
| Type | Submarine |
| Size | Flotilla |
| March | Fladdrande Fanor (V. Widqvist) |
| Website | www.forsvarsmakten.se/1ubflj |
The 1st Submarine Flotilla (Swedish: Första ubåtsflottiljen or 1.ubflj) is a unit of the Swedish Navy which has operated in various forms since 1904. Its headquarter is located in Karlskrona, Blekinge. There are five submarines in the flotilla, three of Gotland class and two of Södermanland class.