“…footage of USS Detroit (LCS-7) firing its 57 mm gun in a series of tests that sank an inbound surface target and destroyed an unmanned aerial vehicle on March 6 and 7, 2017. US Navy/Lockheed Martin Video”
Our weapons are tools we don’t get to use very often. lt is good to have confidence in your tools. The video is encouraging, but there is very little information here. What was the range to the targets? How big was the UAV? How fast were they moving? How many rounds were required to achieve the effect.
If anyone has specifics I would love to hear them.
Chuck Hill's CG Blog 
The effective range of the 57mm is 8500 metres. Against any form of stand off attack you would have to hit the projectile/missile rather than the launch vehicle.
I think this is the air target in the video: https://en.wikipedia.org/wiki/Meggitt_Banshee
Which would mean a 9’4″ long target with an 8’2″ span and a max speed of 124 mph (108 knots)..
Hi Chuck,
Having completed Combat Systems Ship Qualifications Trials (CSSQT) on-board a WMSL before and assisting with others, these tests are highly monitored and conducted in near perfect conditions. This isn’t to take away the effectiveness of our (USN/USCG) weaponry but to highlight that in real-life engagements we will NOT be under the near perfect conditions.
The UAV/UAS normally are about that size and fly <250kts, again the conditions must align with safety and weather permitting. Stratton (WMSL 752) took one down on their CSSQT. As for the unmanned boat – same situation and normally <20kts with < Sea State 3 ( if i remember correctly).
Again, I am not downplaying these incredible weapons but much our testing is in perfectly simulated environments This portrays great confidence to the command and deck plate level but when real situations arise are the confidence levels the same?
Evidence, like these videos, show high-confidence for commands and governments against low, slow fliers and helicopter swarms if these continue to be a threat. But again, this is a DDG that's meant for open water and offshore engagement, not littoral warfare. . Would be interesting to see more from the WMSL and soon OPC.
“Navy Selects BAE’s 57mm Mk110 Gun for Constellation-Class Frigates”
That the new Navy Frigates will be armed with the 57mm Mk110 is not news, but this does include some information.
“This contract also includes providing a Mk110 system to the U.S. Coast Guard’s third Argus Class Offshore Patrol Cutter, USCGC Ingham. Deliveries are expected to begin in 2023 under the contract with Naval Sea Systems Command Integrated Warfare Systems 3C (NAVSEA IWS).
“The 57mm Mk 110 is currently in service on the Navy’s Littoral Combat Ship and the U.S. Coast Guard’s National Security Cutter. To date, BAE Systems is providing 39 Mk110 guns to the Navy and 15 to the Coast Guard. Worldwide, 103 Mk110/57 Mk 3 naval gun systems are under contract with nine nations. ”
15 for the Coast Guard, presumably eleven for the NSCs, the three for the first three OPCs, plus maybe a spare? Very soon the Coast Guard will have more 57mm Mk110s than 76mm Mk75s. I suppose that will be some kind of landmark.
https://seapowermagazine.org/navy-selects-baes-57mm-mk110-gun-for-constellation-class-frigates/