4th Naval Warfare Flotilla (Sweden)

The 4th Naval Warfare Flotilla (Fjärde sjöstridsflottiljen or 4. sjöstridsflj) is one of three flotillas in the Swedish Navy and is a part of the Berga Naval Base. The unit is based at Berga south of the Swedish capital Stockholm. It was formed in 2005 when the former naval mine warfare flotilla was split and surface warfare units were added.

Organization
The flotilla is split into four different divisions as of 2005.

41st Corvette Division 42nd Minesweeper Division 43rd Supply Division 44th Mine Clearance Division
 * HSWMS Gävle (K22) corvette of Göteborg-class corvette
 * HSWMS Sundsvall (K24) corvette of Göteborg-class corvette
 * HSWMS Visby (K31) corvette of Visby-class corvette
 * HSWMS Helsingborg (K32) corvette of Visby-class corvette
 * HSWMS Djärv (82) patrol boat of Tapper-class patrol boat
 * HSWMS Händig (84) patrol boat of Tapper-class patrol boat
 * HSWMS Hurtig (87) patrol boat of Tapper-class patrol boat
 * HSWMS Koster (M73) mine countermeasures vessel of Koster-class mine countermeasures vessel
 * HSWMS Kullen (M74) mine countermeasures vessel of Koster-class mine countermeasures vessel
 * HSWMS Ven (M76) mine countermeasures vessel of Koster-class mine countermeasures vessel
 * HSWMS Spårö (M12) minesweeper of Spårö-class minesweeper
 * HSWMS Trossö (A264)

Commanding officers

 * 1994–1997: Christer Nordling
 * 1997–2000: Johan Fischerström
 * 2000–2003: Claes-Göran Hagström
 * 2003–2006: Lennart Bengtsson
 * 2006–2009: Jan Thörnqvist
 * 2009–2013: Jonas Wikström
 * 2013–2013: Pontus Krohn (acting)
 * 2014–2017: Ewa Skoog Haslum
 * 2017–2022: Fredrik Palmquist
 * 2022–20xx: Anders Bäckström