OVERVIEW: The SSG 73 Collins is a diesel-electric powered submarine in service with the Royal Australian Navy (RAN). Commissioned in 2008, it represents a significant investment in Australia's underwater warfare capabilities.

DETAILS:
The *Collins*-class submarine program, of which SSG 73 *Collins* is a member, represents a significant chapter in Australian naval history, marking the nation’s ambition to develop and maintain a modern, independent submarine force. The design process, though ultimately resulting in a capable platform, was subject to considerable scrutiny and modifications. The aim was to produce a submarine tailored to the specific operational requirements of the RAN, emphasizing long-range patrol capabilities within the vast Indo-Pacific region. While the initial *Collins*-class program faced some teething troubles, subsequent upgrades and improvements have enhanced the class’s operational effectiveness and reliability. The design prioritized a low acoustic signature and advanced sensor integration to maintain a tactical advantage in the challenging underwater environment.

The primary roles of SSG 73 *Collins* are anti-submarine warfare (ASW), anti-surface warfare (ASuW), and intelligence, surveillance, and reconnaissance (ISR) operations. The submarine is well-suited for independent patrols, capable of deploying covertly into strategically important areas to gather intelligence, monitor shipping lanes, and project force as required. The *Collins*'s capabilities extend to supporting special operations forces through covert insertion and extraction. The integration of advanced communication systems allows for seamless data transfer and coordination with other naval assets and shore-based command centers.

The sensor suite aboard SSG 73 *Collins* provides a comprehensive picture of the surrounding environment. The Kariwara COLTAS towed array sonar significantly extends the submarine's detection range for distant targets. The Type 1007 navigation radar provides surface navigation and target tracking capabilities. The TSM 2253 PVDF flank array enhances situational awareness by detecting and classifying contacts. The TSM 2233M Scylla suite, incorporating a DSUV 2H dry shelter and DUUA 2D diver underwater communications system, supports special operations. The Manta XL electronic warfare support measures (ESM) system intercepts and analyzes enemy radar emissions, providing vital intelligence for threat assessment. A TSM 2255 mine avoidance sonar reduces the risk of encountering underwater mines. SATEPS provides satellite communications, allowing for secure data transfer and coordination with other assets. The CK043 / CH093 periscope suite allows for visual observation, target identification, and photographic intelligence gathering. Armament consists of standard Submarine Self Defence Equipment (SSDE) and 533mm torpedo tubes capable of launching a variety of modern torpedoes.

SPECIFICATION: Length: 77.4 m || Beam: 7.8 m || Draft: 7.0 m || Disp: 3051 t

SENSORS: Kariwara COLTAS || Type 1007 || TSM 2253 PVDF || TSM 2233M Scylla [DSUV 2H + DUUA 2D] || Manta XL || TSM 2255 || SATEPS || CK043 / CH093 Periscope Suite

ARMAMENT: SSDE || 533mm TT