Nimitz-Class Aircraft Carriers by Brad Elward

Author:Brad Elward
Language: eng
Format: epub
Tags: Nimitz-Class Aircraft Carriers
ISBN: 9781849089715
Publisher: Bloomsbury Publishing
Published: 2011-06-07T16:00:00+00:00

Capable of firing 3,000 rounds per minute, the Mk 15 Close-In Weapons System (CWIS) 20mm gun provides close-in defense against incoming missiles. This image shows a test-firing of one of the CIWS units aboard Harry S. Truman (CVN 75). (US Navy, Craig R. Spiering)

Protection against underwater threats is provided by the twin SLQ-25A “Nixie” torpedo countermeasures systems located at the carrier’s stern. Introduced in 1987 on Carl Vinson and Theodore Roosevelt, “Nixie” is a towed noisemaker device that is trailed behind the carrier, when there is a threat of incoming torpedoes, using a fiber-optic tow cable. “Nixie” distracts the torpedo and draws it away from the carrier. SLQ-25B adds a towed torpedo detection array, an SLX-1 Multi-Sensor Torpedo Recognition and Alertment Processor (MSTRAP), and the Launched Expendable Acoustic Decoy (LEAD). LEAD is launched from the Mk 36 decoy system’s Mk 137 launcher. An experimental torpedo countermeasures system was trialed on Nimitz from 1995 through 2000, with little success. During that time, the carrier was fitted with the SLR-24 towed passive linear torpedo detection sensor as part of the prototype CST-1 torpedo countermeasures system.

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