装卸港 meaning in Chinese

bends both ends
port of loading

Wtsbends working time saved at both ends
装卸港均以节省的工作时间计算速遣费
Tanker advice to the terminal
油船对装卸港通告的信息
Indicating container number , seal number as well as name , tel no . and address of the shipping agent at final destination , must specify the name of loading port and discharging port
我觉得除目的港资料强调外其他略显多余吧， b / l都会显示装卸港和箱封号，这个不必多虑吧？有相关显示即可吧？