7.2 请简要描述 DSC（数字选择性呼叫）遇险报警

2. Describe briefly the DSC distress alert.

(1) The function of DSC.

(2) The format of a distress alert.

(3) Summary.

请简要描述 DSC（数字选择性呼叫）遇险报警。

(1) DSC 的功能。 (2) 遇险报警的格式。 (3) 小结。

(1) DSC is the short form of digital selective calling. It is used to carry out distress alert and distress watch. It increases the possibility of distress alert being received successfully.

(2) The DSC equipment is equipped with VHF CH70, DSC watching machine and MF/HF according to vessel’s sailing area. The DSC watching machine is keeping a 24 hours watch.

(3) The DSC distress alert can carry out distress alert from ship to ship, ship to shore and shore to ship at any sea area.

(1) DSC 是数字选择性呼叫的缩写形式，它用于进行遇险呼叫和遇险值守，它增加了遇险报警被成功接收的可能性。

(2) 根据航区不同，DSC 配备了甚高频 70 频道，DSC 值守机和中高频设备。DSC 值守机连续 24 小时值守。

(3) DSC 遇险报警可以在任何海区实现船到船、船到岸、岸到船的报警。