USCG Deck Rules (Supplementary)

GMDSS procedures under SOLAS Chapter IV and FCC regulations require transmitting a digital distress alert via MF/HF, VHF, or Inmarsat when grave and imminent danger threatens the ship, even if abandonment is not immediately required, ensuring rapid Rescue Coordination Center notification.

When abandoning ship, survival craft operations demand that the Radar SART and 406 MHz EPIRB be manually activated and physically secured inside or aboard the survival craft to continuously transmit homing signals and precise GPS distress coordinates to search and rescue authorities.

SOLAS Chapter IV mandates that GMDSS availability is maintained via at least one of three methods: shore-based maintenance, at-sea maintenance by a qualified rating, or duplicate equipment redundancy. Therefore, all listed options partially or fully contribute to regulatory compliance.

The fundamental architecture of the Global Maritime Distress and Safety System integrates satellite and terrestrial networks to instantly alert shore-based Rescue Coordination Centers and nearby vessels, ensuring rapid, coordinated multi-agency search and rescue operations.

Prior to embarking on survival craft during ship abandonment, operators must ensure the EPIRB and SART are activated and placed in the craft to guarantee ongoing transmission of homing signals and distress location data to search and rescue units.

GMDSS radio installations on compulsory SOLAS vessels must undergo statutory safety radio surveys and inspections annually, not every five years. The five-year claim is incorrect, making statement C the false requirement under international regulations.