Eye on the Navy
nance, modernization and operations." Several cruisers have already received HM&E upgrades, but Bunker Hill will be the first cruiser to receive both the HM&E package and full Aegis combat systems upgrade: � Much more processing capability and reliability in much less space: The Aegis weapon system upgraded to Advanced Capability Build 2008 (ACB 08) computer program and associated displays and computing infrastructure offers improved littoral situational awareness and hard kill against low flying aircraft and fast in-shore attack craft. � Upgraded command, control, communications, computers and intelligence (C4I) systems: Includes cooperative engagement capability (CEC) 2.1, common data link management system (CDLMS) and Mode 5 identification friend or foe (IFF), for better strike group interoperability and data sharing. � Improved naval surface fires support: Mk 34 Mod 4 gun weapon system includes a pair of 5-inch/62-caliber Mk 45 Mod 4 guns and the associated Mk 160 Mod 11 fire-control system and optical sights deliver better accuracy and range. � Better missile launchers: Vertical launch system (VLS) modifications support current and future capabilities of the standard missile (SM-2) variants. � Better self-defense capability against air and surface threats: The Close-in Weapons System (CIWS) is replaced with the newer Block 1B version, which has an anti-surface capability. The Evolved SeaSparrow Missile (ESSM) can be fired from quad-packs in the ship's vertical launch system, providing another layer of self-defense against incoming threats from the air. The high resolution, X-band narrow beam AN/SPQ-9B radar detects small fast targets like sea skimming missiles to the horizon, even in heavy clutter. � Integrated ship controls: A full integrated bridge with electronic navigation, digital surveillance, and wireless communications, as well as engineering controls result in better performance with reduced space, maintenance and manpower. � Improved undersea warfare capabilities in the littorals: Although not planned for Bunker Hill at this time, the cruiser modernization program provided ability to detect/engage in both open and shallow water.with the SQQ89A(V)15 sonar.
The ship is fitted with a stern flap. Stern flaps create a vertical lift force at the transom modifying the pressure distribution on the aft portion of the hull. This reduces the drag on the ship, which modifies the wave resistance of the ship, therefore reducing the propulsion power required to achieve a given speed. This, in turn, reduces fuel consumption and provides commensurate cost savings and environmental benefits. By maintaining ship speed using less power and a lower shaft speed, the cost of maintenance is reduced and the life of the propulsion plant machinery is extended. Other benefits to using stern flaps include reductions in propeller load, cavitation, vibration, and noise. (U.S. Navy photo)
ABS, BV, DNV, GL, LRS HSC APPROVED Standard lightweight & purpose designed equipment for high speed ships to 600 ft. Built in Australia and USA for a worldwide market.
Phone +61-8-8333 0222 paul.kaminsky@hypac.com.au www.hypac.com.au
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Maritime Reporter & Engineering News