About this Unit
Helicopter Anti-Submarine Squadron (Light) 33, or HSL-33, was a United States Navy helicopter squadron established on 1 March 1973. Based at Naval Air Station North Island, California, the squadron operated the SH-2 Seasprite helicopter, specializing in anti-submarine warfare (ASW) and supporting Pacific Fleet surface ships. HSL-33 provided critical airborne ASW capabilities, search and rescue, and utility missions during its service. The squadron was decommissioned on 30 September 1994 as part of post-Cold War force reductions.
Historical Facts
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Designation: Helicopter Anti-Submarine Squadron (Light) 33, known as HSL-33, was a United States Navy squadron specializing in anti-submarine warfare (ASW).
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Establishment: HSL-33 was established on 1 March 1977 at Naval Air Station (NAS) North Island, California.
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Nickname: The squadron carried the nickname "Sea Snakes," and its insignia featured a striking sea snake design coiled around a torpedo.
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Primary Aircraft: HSL-33 operated the SH-2F Seasprite helicopter, a versatile platform equipped for ASW, search and rescue, and utility missions.
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Role in Surface Groups: HSL-33 detachments were often deployed onboard frigates, destroyers, and cruisers, providing a vital anti-submarine capability to surface action groups.
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Operational Theater: The squadron primarily operated in the Pacific Ocean, with missions frequently spanning the Western Pacific and Indian Ocean.
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Technological Milestone: The SH-2F helicopters flown by HSL-33 were among the first to utilize the Light Airborne Multi-Purpose System (LAMPS) Mk I, enhancing the Navy’s ability to detect and engage submarines.
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Support in Real-World Events: HSL-33 played roles in numerous Cold War operations, supporting U.S. naval forces during tense periods of maritime competition with the Soviet Navy.
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Disestablishment: The squadron was disestablished on 30 June 1994, as part of post-Cold War restructuring and the retirement of the SH-2F from the fleet.
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Legacy: Although decommissioned, many HSL-33 personnel and traditions carried on in successor LAMPS squadrons, and its service is commemorated by naval aviation enthusiasts and veterans.