OVERVIEW: The S 61 Delfin [Daphne, S-60] is a diesel-electric submarine operated by the Spanish Navy. The Delfin represents a significant, albeit aging, component of Spain's underwater warfare capabilities.

DETAILS: The Delfin, lead boat of the Daphne (S-60) class, was commissioned into the Spanish Navy in 1995. The Daphne class represents a locally produced and improved variant of the French Daphne design, a project undertaken to maintain and develop Spain's shipbuilding expertise. While based on the earlier design, the S-60 incorporates several upgrades reflecting advancements in submarine technology. The design philosophy prioritized silent operation and improved sensor capabilities for anti-submarine warfare (ASW) and anti-surface warfare (ASuW) roles in the littoral waters around the Iberian Peninsula. The class has undergone periodic refits and modernization programs to extend its service life and maintain operational relevance. The S-60 submarines represent a valuable asset for coastal defense and maritime surveillance.

The Delfin primarily undertakes anti-submarine warfare (ASW) and anti-surface warfare (ASuW) roles, with a secondary capability for intelligence gathering and maritime surveillance. Its operating environment is primarily focused on the Mediterranean Sea and the Atlantic approaches to the Iberian Peninsula. The boat's relatively shallow draft makes it well-suited for operations in coastal waters, enhancing its ability to detect and engage enemy submarines and surface vessels operating in these environments. Its missions also include supporting naval exercises, providing training for anti-submarine warfare units, and contributing to the overall maritime security of Spain's territorial waters.

The S 61 Delfin is equipped with a suite of sensors designed for effective underwater detection and tracking. The TRS 3100 Calypso III (also known as DRUA 33C) provides active and passive sonar capabilities for target acquisition and classification. The DUUX 2A and DUUA 1A are likely components of the vessel's integrated sonar suite, enhancing its ability to detect and localize submerged contacts. The Manta XL is a towed array sonar, significantly extending the submarine's passive detection range, particularly against quieter targets. The TSM 2271R (including DSUV 2H and DUUA 2D) represents an advanced sonar processing system for improved target analysis and tracking. Generic submarine periscopes with optical and low-light television (LLTV) capabilities are installed for visual surveillance and target identification on the surface. The 550mm torpedo tubes provide a versatile attack capability against both surface and subsurface threats.

SPECIFICATION: Length: 57.8 m || Beam: 6.7 m || Draft: 5.3 m || Disp: 860 t

SENSORS: TRS 3100 Calypso III [DRUA 33C] || DUUX 2A || DUUA 1A || Manta XL || DUUG 1A || TSM 2271R [DSUV 2H + DUUA 2D] || Generic Submarine Periscope, Optical || Generic Submarine Periscope, LLTV

ARMAMENT: 550mm TT