激光航道标 laser channal marker ; laser beam modulation channel marker

航道标志 channel marker ; channel marking ; Channel demarcation ; navigation mark

航道标准尺度 standard dimension of channel ; standard dimensions of the channel ; standard dimensions of navigation channel

航道浮标 fairway buoy ; channel buoy ; fair buoy ; route buoy

航道浮标工程船 fairway buoy engineering vessel

航道中心浮标 fairway buoy

航道灯标 channel light

航道中浅滩浮标 [水运] middle ground buoy

航道中线浮标 mid-channel buoy ; center channel buoy