pardon?
range to the horizon at sea from 30 feet is 6.7 miles. A laser travels at 186,000 miles per second. at mach 5 (hyper sonic) = 5626.64 feet per second. 6.7 miles =31680 feet so
5.63 seconds to engage this assumes that missile is mach 5 at 0 feet above water. A laser system will get multiple shots at it.
But wait it gets better..
if the system is 100 feet off the water Horizon is now 12.3 miles more than doubling the engagement range and time.
And better yet! If an aircraft has a tactical laser system and is 5000 feet (darn low I know) engagement range is now 86.6 miles that is or about 26 seconds.
Of course all this is predicated on Zircon system working and not being effected by say Electronic War Far systems. And really being mach 5 and at 0 feet altitude.
Serious question: would the laser system be able to knock down multple missiles...say fired in line just seconds apart? Would the explosion of the first missile blind the second or third?