The basic concept of GMDSS is().
A:Search and rescue authorities ashore will rapidly received an distress alert and acted upon
B:SAR units will be rapidly alerted to a distress incident and assist in a coordinated SAR operation
C:Ships navigating in the immediate vicinity of the ship in distress will rapidly alerted to the alert and give their help accordingly
D:The RCC will rapidly alerted to a distress alert through satellite and terrestrial communication techniques and conducted a rescue operation immediately
出自:海船船员证