Seamarks/Fog Signals - Other languages
Fog signals
The tags defined on this page will render in various nautical charts. This page defines tags for the attributes of fog signals.
| Type
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S100 code
|
seamark:type
|
Definition
|
Rendering
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| Fog signal
|
FOGSIG
|
fog_signal
|
A warning signal transmitted by a vessel, or aid to navigation, during periods of low visibility. Also, the device producing such a signal.
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This page defines values for the "seamark:fog_signal:category" tags and other attributes applied to fog signals.
Categories
| Category (CATFOG)
|
seamark:fog_signal:category
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Definition
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| Explosive
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explosive
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A signal produced by the firing of explosive charges.
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| Diaphone
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diaphone
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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'.
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| Siren
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siren
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A siren uses compressed air and exists in a variety of types which differ considerably in their sound and power.
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| Nautophone
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nautophone
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A horn having a diaphragm oscillated by electricity
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| Reed
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reed
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A reed uses compressed air and emits a weak, high pitched sound.
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| Tyfon
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tyfon
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A diaphragm horn which operates under the influence of compressed air or steam
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| Bell
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bell
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A ringing sound with a short range.
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| Whistle
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whistle
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A distinctive sound made by a jet of air passing through an orifice.
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| Gong
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gong
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A sound produced by vibration of a disc when struck.
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| Horn
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horn
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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.
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Signal generation
| Signal generation (SIGGEN)
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seamark:fog_signal:generation
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Definition
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| Automatically
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automatic
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Signal generation is initiated by a self regulating mechanism such as a timer or light sensor.
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| By wave action
|
wave
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The signal is generated by the motion of the sea surface such as a bell in a buoy.
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| By hand
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hand
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The signal is generated by a manually operated mechanism such as a hand cranked siren.
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| By wind
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wind
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The signal is generated by the motion of air such as a wind driven whistle.
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Other attributes
| Attribute
|
seamark:fog_signal:<attribute>
|
Value type
|
Definition
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| Value of maximum range (VALMXR)
|
range
|
Decimal
|
The maximum range at which the signal can be heard in nautical miles.
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| Signal frequency (SIGFRQ)
|
frequency
|
Integer
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The frequency of the sound signal, in hertz.
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| Signal group (SIGGRP)
|
group
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Text
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The number of consecutive sounds, or the morse character(s) within one period of full sequence.
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| Signal period (SIGPER)
|
period
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Decimal
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Time of the time occupied by an entire cycle of intervals of sound and silence.
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| Signal sequence (SIGSEQ)
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sequence
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Text
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The sequence of times occupied by intervals of sound and silence.
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References
OSM seamark resources
External sources
- S-101 ENC/iENC registry (iho.int), the ENC Data Classification and Encoding Guide (DCEG) can be downloaded as zipped PDF, online access to symbols in Portrayal Register
- International nautical chart symbol legend (Chart INT-1, NOAA)
- Encoding Guide for Inland ENCs (openecdis.org, 2018), an international standard of the Inland ENC Harmonization Group is currently in development (IEHG Publication S-401, 2019)
- European Code for Inland Waterways (CEVNI), (UNECE, Fifth revised version 2015)
- European Code for Signs and Signals on Inland Waterways (SIGNI), (UNECE Resolution N0. 90, 2018)
