... а вообще есть и более интересные темы:
"Десять заповедей" строителей экранопланов
http://www.seaircraft.com/requirements.htm
"Ten Commandments" of WIG Design :
Remain "boat-like" in most respects: Maintain good "boating" characteristics (running on plane at below lift-off speeds---critical for operating in high traffic areas, narrow rivers, or any area with restricted maneuvering room). Also good cockpit visibility for seeing and avoiding other marine traffic. Have practical (reasonably "boat-like") docking / mooring capability.
Avoid IMO "Type C" which is unable to capture the cost savings of licensing as a "boat".
Design for reasonable operating speed margin between initial lift-off and maximum cruise speed.
Moderate power required for takeoff (horsepower-to-weight ratio of < 7 % ) with reasonably slow lift-off speed and short takeoff runs (< 30 seconds or so). Also have ability to takeoff in other than "nearly calm" wind and waves.
Good resistance to blow-over if "bounced" by wind or waves above normal height, and no dangerous loss of stability or control at maximum speeds. Be able to safely recover from significant pitch or roll upsets.
Have good maneuverability (i.e. "boat-like" turn radius --or better-- at cruise or harbor-taxi speeds) and the ability to quickly execute emergency stopping or other collision avoidance maneuvers.
PAR takeoff assistance (if required) must not be too mechanically complex, costly or noisy for commercial use.
Props or fans need to be located in areas not prone to debris damage, or sand and spray erosion, and should not create a potential hazard to dock attendants, nearby boaters, or other personnel.
1 to 6-seat craft should be conveniently folded or dismantled for transport or trailering and should have walk-on "deck" areas for boarding, engine access (or for swim platform, sun pad, etc.).
Avoid ultra-light aircraft type construction that is not robust enough for serious marine use and avoid "low-cost" FRP boat construction that is too heavy to fly well (use aircraft structure where necessary).