At 12:43 on December 17, "Zhenhua 4", a cargo ship with China Communications Construction Company was attacked by pirates at the Aden Gulf. Nine pirates boarded the ship.
Distress traffic consists of all messages relating to the immediate assistance required by the ship in distress, including search and rescue communications and signals for locating.
遇险通信是遇险船舶所需要的与紧急救助有关的所有信息，包括搜救通信与定位信息。
3
Today, communications have become a major factor in the coordination of ship and gun control.