I wonder if in a hypothetical clash a huge ekranoplan like this was going to attack american ship what would be used to counter it? It's flying too low for SAMs and going too fast for antiship missiles, CIWS reacts only to relatively close objects.
1. If it was a carrier being targetted, the Lun would have been spotted hundreds of miles from the carrier and the carrier's aircraft would have killed it well before it could have launched its missiles. A single hit from a Maverick would likely have done the job.
2. The SM series of anti-aircraft missiles common to US Naval vessels essentially ALL have an anti-ship capability/mode. The only question is who would see who first. It would seem to me that the Lun has a HUGE radar cross section with a huge doppler shift relative to the water, so the ship would seem to have the advantage in seeing the Lun first.
3. The 5-inch guns common to US Naval vessels have the ability to track and engage a WIG type vessel at speed. However, the Lun would likely launch its missiles before a ship could get close enough to engage with a gun.
4. Harpoon anti-ship missiles have the ability to track and engage a WIG type vessel at speed. The ship's helo could provide the targeting data for the Harpoon at a range well beyond the Lun's ability to spot the ship on its radar.