Key:seamark:fog_signal:category

Categories of fog signal (CATFOG).

A fog signal can be emitted from various objects:

• seamark:type=buoy_cardinal
• seamark:type=buoy_isolated_danger
• seamark:type=buoy_lateral
• seamark:type=buoy_safe_water
• seamark:type=light_major
• seamark:type=light_minor
• seamark:type=light_float
• seamark:type=light_vessel

Values

Category (CATFOG)	seamark:fog_signal:category	Definition	Seamark Rendering
Explosive	explosive	A signal produced by the firing of explosive charges.
Diaphone	diaphone	A diaphone uses compressed air and generally emits a powerful low-pitched sound, which often concludes with a brief sound of suddenly lowered pitch, termed the 'grunt'.
Siren	siren	A siren uses compressed air and exists in a variety of types which differ considerably in their sound and power.
Nautophone	nautophone	A horn having a diaphragm oscillated by electricity
Reed	reed	A reed uses compressed air and emits a weak, high pitched sound.
Tyfon	tyfon	A diaphragm horn which operates under the influence of compressed air or steam
Bell	bell	A ringing sound with a short range.
Whistle	whistle	A distinctive sound made by a jet of air passing through an orifice.
Gong	gong	A sound produced by vibration of a disc when struck.
Horn	horn	A horn uses compressed air or electricity to vibrate a diaphragm and exists in a variety of types which differ greatly in their sound and power. The classification 'horn' is the generic term for fog signals nautophone, reed and tyfon.

Tags to use in combination

• seamark:fog_signal:group=*
• seamark:fog_signal:period=*
• seamark:fog_signal:sequence=*
• seamark:fog_signal:range=*
• seamark:fog_signal:frequency=*
• seamark:fog_signal:generation=*

Examples in OpenSeaMap

See also

• Fog Signals