The Environment Canada marine weather forecast that is broadcast continuously over various radio frequencies is known as the:

The continuous broadcast of marine weather information by Environment Canada is referred to as the Continuous Marine Broadcast. This service provides essential information, including forecasts and warnings specific to marine conditions, which are critical for the safety of those engaged in maritime activities such as sailing and fishing.

The term "Continuous Marine Broadcast" accurately describes the nature of the service, which transmits weather information in a consistent and ongoing manner to ensure that mariners have access to up-to-date meteorological data. This broadcast is crucial for maintaining awareness of changing weather conditions at sea, thus enhancing safety-conscious practices among users.

In contrast, other terms might imply a more general or different type of service; for example, "Environment Canada Marine Forecast" may refer to the broader range of forecast products offered, and "Marine VHF Broadcast" specifically pertains to a type of communication used in the maritime sector.