(??????????????????)??????

??1????20???????? (???? ???????)?????,?????????????20???????,???????????????????,??????????

??,?????????????????????????5600????????????????,???????????????????????39.2?,???????????????????5.9%?

????,??,??????,????????????????????6????12?????????????????????????????68??????????,????,??24???????32???????????????????????????????????,???

???,??,???AIS(???????????????)???????????????????????????????VHF(?????)?????,?????????,????????????????????????

??,????????????“??????????”,????????????????,?????????????????????????(??????) ????????????????????:??????