What does VHF stand for in maritime communication?

VHF stands for Very High Frequency, which refers to a specific range of radio frequencies between 30 MHz and 300 MHz. In maritime communication, this frequency band is predominantly used for communication between ships and between ships and shore stations.

The reason for the prevalence of VHF in maritime environments lies in its ability to provide relatively clear communication over medium distances, with line-of-sight propagation characteristics, making it effective for marine operations. VHF is essential for safety and navigation communications, such as distress signals, coordination of vessel movements, and general communication among ships.

The other terms do not accurately represent the established terminology within the field of maritime communication. Variable High Frequency and Vessel High Frequency are not recognized definitions within the context, while Visual High Frequency does not pertain to radio communication at all. Understanding that VHF is critical in both operational efficiency and safety highlights why "Very High Frequency" is the correct term in this context.