20km? No, probably half that, or even less. HELIOS for example has a range of 8km.Most powerful naval laser weapon in the PLAN or in the world I wonder. The size seems to suggest the typical 100KW to 150KW power range which is similar to what the USN is playing around with as well. Basically good for anti-droning. Not even long range anti-droning. Probably good to around 20km out at most? This is why laser weapons are a waste of space and power until the physics change so much that you can pack serious power in the same volume of space.
The entire point of a laser is its bottomless magazine. We already have CIWS and SRSAMs like Type 1130 and HHQ-10; the problem with the Type 1130 is limited magazine and limited range, while the problem with HHQ-10 is limited magazine and high cost, especially relative to drones.20km range you may as well install a CIWS with shorads that will soon have similar reach.
Not sure anyone is thinking about using lasers against hypersonic weapons (for now). Mostly drones and ASCMs. And maybe small boats/USVs. The threat of drones in the modern era of warfare IMO is enough to justify having one of these around as a third layer of hard-kill defense.PS also lasers aren't effective against hypersonic anti-ship weapons because hypersonics cover the 20km distance in about 1.5 seconds.
The HELIOS laser looks like it's about 6 decks above the waterline on an Arleigh Burke, which is probably ~18m high. Against a sea-skimmer at 5m height the visual horizon to such an object is 23.13km. 23km visual horizon for a laser is plenty, especially given both the limited range of the laser to begin with as well as the fact that the radar horizon for a Burke's SPG-62 FCR vs the same sea-skimmer is probably only about 5-7km or so more depending on its exact height.It's also useless against sea-skimmers because sightline for laser is limited by the horizon and they're usually not mounted high up enough. Gives it like a 10km to 15km which reduces your effective range. Then you factor in detection, tracking, locking, motion of laser turret... that's leaving you with maybe a 5 second to 10 second response window for a single mach 1 to mach 2 AshM.
I don't think they will need to or be asked to engage targets beyond 20-25km TBH, at least not during our lifetimes.If naval lasers want to be a thing, they need to be able to fry through ordinance and drones within 2 seconds of lasing the target before moving onto the next target. Be able to engage well beyond 20km with that above effectiveness.