page_title: 4.5-Inch Beach Barrage Rocket
hierarchical_section_title: 4.5-Inch Beach Barrage Rocket
caption_attribution_description: English: Illustration of the 4.5-Inch Beach Barrage Rocket ("Old Faithful") with Mk. 9 motor.
context_page_description: The 4.5-Inch Beach Barrage Rocket, also known as "Old Faithful", was a 4.5-inch rocket developed and used by the United States Navy during World War II. Originally developed from the "Mousetrap" anti-submarine rocket, it saw widespread use during the war, being replaced by more powerful rockets toward the end of the conflict.
context_section_description: The 4.5-Inch Beach Barrage Rocket, also known as "Old Faithful", was a 4.5-inch (110 mm) rocket developed and used by the United States Navy during World War II. Originally developed from the "Mousetrap" anti-submarine rocket, it saw widespread use during the war, being replaced by more powerful rockets toward the end of the conflict.
caption: 4.5-Inch BBR with Mk 9 motor
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