Statistics for occurrence #1 of “U. S. Gun” in chapter 40 of Admiral David D. Porter, The Naval History of the Civil War.:

...ille. joint Army and Navy expedition up Pamunky River. boat expedition up Chuckatuck Creek. attack on Minnesota by torpedo-boat. Landing of Army at City Point and Bermuda hundred. destruction of U. S. Gun -boat Commodore Jones. Confederate torpedo defences. Monitors engage Howlett's battery. picking up torpedoes. repulse of attack on Wilson's wharf by gun-boats. Confederate iron-clads and gun-boat...
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U. S. Gun 8 8 0 0 0 user votes
U. S. Gunboats 4 0 0 0 0 user votes

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