**OVERVIEW:** The S 322 *Tumleren* [Type 207, *Kobben* Class] is a diesel-electric submarine operated by the Royal Danish Navy, commissioned in 1990. She represents a late-life upgrade and continued service of the *Kobben* class design.

**DETAILS:**
The *Kobben* class submarines, designated Type 207 by the manufacturer, represent a significant chapter in post-World War II submarine development. Originally designed and built in West Germany for Norway during the 1960s, the class was also acquired and modified by other nations, including Denmark. The design philosophy centered on providing a highly maneuverable and relatively quiet submarine suitable for operations in littoral waters and the confined spaces of the Baltic and North Seas. The *Kobben* class boats prioritized stealth and agility over long-range endurance, making them well-suited for ambush tactics and close-quarters anti-submarine warfare (ASW). The *Tumleren* represents one of the final iterations of the design, likely benefiting from lessons learned throughout the service lives of the earlier vessels. The acquisition of the *Tumleren* by Denmark significantly enhanced their underwater warfare capabilities, providing a potent deterrent and platform for maritime surveillance.

The primary roles of the *S 322 Tumleren* would be focused on anti-submarine warfare (ASW) and anti-surface warfare (ASuW), with secondary roles in maritime surveillance and intelligence gathering. Her compact size and relatively quiet operation make her well-suited for operating in the shallow and congested waters of the Baltic Sea, where she would be a difficult target to detect. While the *Kobben* class lacks any dedicated anti-air warfare (AAW) capability, its stealth and ambush tactics would allow it to avoid detection by hostile aircraft. The *Tumleren*'s effectiveness in ASW is greatly enhanced by the DBQS-21F sonar, designated PSU 83 within the Danish Navy, providing an improved detection and tracking range compared to earlier *Kobben* class boats. Her 533mm torpedo tubes enable the use of modern heavyweight torpedoes, capable of engaging both surface and subsurface targets at significant range.

The sensor suite onboard the *S 322 Tumleren* provides a comprehensive picture of the submarine's operational environment. The Scanter 009 radar, a surface search radar, allows for surface navigation and the detection of surface contacts at short to medium ranges. The generic ESM system allows for passive detection and identification of radar emitters, providing situational awareness and warning of potential threats. The EDO 1525 is likely a passive ranging sonar, contributing to target localization. The two periscopes offer both standard optical and low-light television (LLTV) capabilities for visual reconnaissance and target identification under varying light conditions. The generic acoustic intercept system enables the submarine to listen for enemy sonar transmissions, enhancing its ability to locate and avoid hostile submarines. The integration of these sensors, coupled with the vessel's inherent stealth, makes the *S 322 Tumleren* a capable and versatile submarine platform.

**SPECIFICATION:** Length: 47.2 m || Beam: 4.7 m || Draft: 3.8 m || Disp: 435 t

**SENSORS:** Scanter 009 || Generic ESM [Average] || DBQS-21F [PSU 83] || Generic Acoustic Intercept || EDO 1525 || Generic Submarine Periscope, Optical || Generic Submarine Periscope, LLTV

**ARMAMENT:** 533mm TT || 533mm TT