155mm NGS: Braveheart Goes to Sea?

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Naval AS90(click to view full) Medium caliber naval guns confront naval planners with a divergence of opinions: mount large caliber, slower-firing 5″/127mm guns used mostly for naval fire support, or smaller caliber 100-57mm guns with far more rapid rates of fire that can be used against smaller boats, UAVs, missiles et. al. as well? In recent years, a 3rd option has entered the scene: 155mm guns adapted from Army platforms. Key advantages include potential commonality of ammunition stocks, greater destructive power, and better leveraging of R&D into long range and specialized variants with some land/sea commonality. Hence projects like the American AGS system for its Zumwalt Class destroyers, and Germany’s aborted MONARC that would have mounted a turret from their PzH 2000 self-propelled howitzer on the new F125 expeditionary frigates. AGS is rather large, however, which leaves the question of what to do with ships smaller than the DDG-1000 Zumwalt’s Graf Spee sized 14,500t. The Royal Navy has become the latest navy to jump into this fray, undertaking a relatively low cost research program that looks at the AS90 Braveheart howitzer’s potential for future warships, and for refits to the existing fleet. They’ll have a number of significant challenges to […]

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