Mid-air collisions are rare first and foremost because most flights happen in controlled airspace with assigned flight levels, routes and ATC monitoring the flights on radar (and TCAS as a last resort for collision avoidance). Mid-air collisions are far more common in uncontrolled airspace where light airplanes fly.
So the answer would be to provide controlled areas for the ekranoplans to travel and monitor those "seaspaces" for infringing traffic.
Midair collisions not near an airport are vanishingly rare. The takeaway from that for me is that concentrating traffic (such as would happen when you take one degree of freedom away) would materially increase the risk.
They're also rare in absolute terms, even including the near-airport ones.
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Mid-air collisions are rare first and foremost because most flights happen in controlled airspace with assigned flight levels, routes and ATC monitoring the flights on radar (and TCAS as a last resort for collision avoidance). Mid-air collisions are far more common in uncontrolled airspace where light airplanes fly.
So the answer would be to provide controlled areas for the ekranoplans to travel and monitor those "seaspaces" for infringing traffic.
Midair collisions not near an airport are vanishingly rare. The takeaway from that for me is that concentrating traffic (such as would happen when you take one degree of freedom away) would materially increase the risk.
They're also rare in absolute terms, even including the near-airport ones.
Don't discount the weather. Aircraft at 30K feet are in an entirely different environment than those skimming the waves of the oceans.