... is less than 2.5N.M Speed: 200 Multi-ocean sea border posts (ocean surface wind farm):Advantages:1, green, renewable ... energy, high efficiency, high power generation efficiency4, can be on the sea, sea, sky and all-round multimedia monitor5, monitoring, recording of marine ... less than 2.5N.M4, Speed: 200 turns ... Multi-ocean sea border posts (ocean surface wind farm)