OVERVIEW: The S 320 *Narhvalen* [Modified Type 205] is a diesel-electric submarine operated by the Royal Danish Navy, representing a significant upgrade to the original German-designed Type 205 platform.

DETAILS:
The *Narhvalen* was commissioned in 1995, representing a modernization effort building upon the proven Type 205 design. While the original Type 205 boats were known for their small size, excellent maneuverability in littoral waters, and primarily anti-submarine warfare (ASW) focus, the *Narhvalen* incorporates substantial modifications, likely focused on improving sensor performance, extending operational range, and enhancing crew comfort. The Type 205 was initially constructed using non-magnetic steel to counter magnetic influence mines, and it is probable that this feature was retained or further improved in the *Narhvalen*. The Danish adaptation likely reflects specific operational requirements within the Baltic Sea and surrounding waters, emphasizing the need for a quiet, shallow-water capable submarine.

The *Narhvalen*'s primary roles are likely anti-submarine warfare (ASW), anti-surface warfare (ASuW), intelligence gathering, and covert operations within the Baltic Sea and surrounding waters. The vessel’s compact dimensions allow for operations in confined areas and shallow depths, making it well-suited for surveillance and interdiction missions close to shore. While the vessel's armament is limited to torpedoes, its sensor suite allows for effective target detection and tracking. The *Narhvalen*’s design likely emphasizes a stealthy operational profile, allowing it to operate undetected in contested environments. The vessel’s modern sensor suite suggests a focus on gathering intelligence and providing situational awareness to the Royal Danish Navy.

The submarine's sensor suite includes the M1H sonar, likely for medium-range active and passive detection. The THD 1030 Calypso II radar is probably used for surface search and navigation. The DUUG 1A sonar supports underwater communications. The DR 2000U electronic support measures (ESM) system provides the ability to detect and analyze radar emissions from surface vessels and aircraft. The AN 407 sonar is most likely integrated for target classification and ranging. The inclusion of both optical and low-light television (LLTV) periscopes, generically listed, allows for visual surveillance in varying light conditions, crucial for covert operations and target identification. The 533mm torpedo tubes provide a potent offensive capability against both surface and subsurface targets.

SPECIFICATION: Length: 44.0 m || Beam: 4.55 m || Draft: 3.98 m || Disp: 435 t

SENSORS: M1H || THD 1030 Calypso II || DUUG 1A || DR 2000U || AN 407 || Generic Submarine Periscope, Optical || Generic Submarine Periscope, LLTV

ARMAMENT: 533mm TT