A continuous marine broadcast, or CMB, is a marine

weather Weather is the state of the atmosphere, describing for example the degree to which it is hot or cold, wet or dry, calm or stormy, clear or cloud cover, cloudy. On Earth, most weather phenomena occur in the lowest layer of the planet's atmo ...

broadcasting servicehttps://www.dxinfocentre.com/cmb.htm operated by the

Canadian Coast Guard The Canadian Coast Guard (CCG; ) is the coast guard of Canada. Formed in 1962, the coast guard is tasked with marine search and rescue (SAR), communication, navigation, and transportation issues in Canadian waters, such as navigation aids and i ...

. CMBs are programmed from the various

Marine Communications and Traffic Services Marine is an adjective meaning of or pertaining to the sea or ocean. Marine or marines may refer to: Ocean * Maritime (disambiguation) * Marine art * Marine biology * Marine current power * Marine debris * Marine energy * Marine habitats * Mari ...

centres on the Atlantic, Pacific and Arctic coasts of

Canada Canada is a country in North America. Its Provinces and territories of Canada, ten provinces and three territories extend from the Atlantic Ocean to the Pacific Ocean and northward into the Arctic Ocean, making it the world's List of coun ...

, as well as on the coasts of the

Great Lakes The Great Lakes, also called the Great Lakes of North America, are a series of large interconnected freshwater lakes spanning the Canada–United States border. The five lakes are Lake Superior, Superior, Lake Michigan, Michigan, Lake Huron, H ...

. Programming is broadcast in English and French on the Atlantic Coast and along the

Saint Lawrence River The St. Lawrence River (, ) is a large international river in the middle latitudes of North America connecting the Great Lakes to the North Atlantic Ocean. Its waters flow in a northeasterly direction from Lake Ontario to the Gulf of St. Lawrenc ...

, and in English only on the Great Lakes, Arctic Coast and Pacific Coast. The content of a CMB is a continuously-played back loop of marine weather information, provided by

Environment Canada Environment and Climate Change Canada (ECCC; )Environment and Climate Change Canada is the applied title under the Federal Identity Program; the legal title is Department of the Environment (). is the Ministry (government department), department ...

and updated several times a day, as well as live broadcasts of selected notices to mariners,

shipping Freight transport, also referred to as freight forwarding, is the physical process of transporting commodities and merchandise goods and cargo. The term shipping originally referred to transport by sea but in American English, it has been ...

, and fishermen. Most of the recordings are made using real human voices, with a computerized

text-to-speech Speech synthesis is the artificial production of human speech. A computer system used for this purpose is called a speech synthesizer, and can be implemented in software or Computer hardware, hardware products. A text-to-speech (TTS) system conv ...

system providing information from automated weather observation points. When necessary, an officer at an MCTS station can break into a CMB transmission and broadcast an urgent live message, such as a navigational warning or a distress relay message. CMBs are transmitted on several frequencies: *161.65 MHz ( Channel 21B) *161.75 MHz (Channel 23B) *161.775 MHz (Channel 83B) *161.85 MHz (Channel 25B) *162 MHz (Channel 28B) As well, on the Pacific coast, CMBs are transmitted on

weather radio A weather radio is a specialized radio receiver that is designed to receive a public broadcast service, typically from government-owned radio stations, dedicated to broadcasting weather forecasts and reports on a continual basis, with the routine w ...

frequencies.

References

External links

Continuous marine broadcast station listingMarine Communications and Traffic Services Centres
Canadian Coast Guard Marine meteorology {{meteorology-stub