Seamarks/Fog Signals
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Seamark tagging
Fog signals
The tags defined on this page will render in various nautical charts. This page defines tags for the attributes of fog signals.
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 | Definition |
---|---|---|
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. |
Signal generation
Signal generation (SIGGEN) | seamark:fog_signal:generation | Definition |
---|---|---|
Automatically | automatic | Signal generation is initiated by a self regulating mechanism such as a timer or light sensor. |
By wave action | wave | The signal is generated by the motion of the sea surface such as a bell in a buoy. |
By hand | hand | The signal is generated by a manually operated mechanism such as a hand cranked siren. |
By wind | wind | The signal is generated by the motion of air such as a wind driven whistle. |
Other attributes
Attribute | seamark:fog_signal:<attribute> | Value type | Definition |
---|---|---|---|
Value of maximum range (VALMXR) | range | Decimal | The maximum range at which the signal can be heard in nautical miles. |
Signal frequency (SIGFRQ) | frequency | Integer | The frequency of the sound signal, in hertz. |
Signal group (SIGGRP) | group | Text | The number of consecutive sounds, or the morse character(s) within one period of full sequence. |
Signal period (SIGPER) | period | Decimal | Time of the time occupied by an entire cycle of intervals of sound and silence. |
Signal sequence (SIGSEQ) | sequence | Text | The sequence of times occupied by intervals of sound and silence. |
References
OSM seamark resources
- Seamark tag values(en)
- Seamark objects(en)
- Seamark attributes(en)
- Categories of objects(en)
- INT-1 cross reference(en)
- Inland waterway notice marks (CEVNI, Europe)(en)
- Inland waterway lateral marks (CEVNI, Europe)(en)
- Inland waterway notice marks (BNIWR, Brazil)(en)
- Inland waterway notice marks (PPWBC, Brazil/Paraguay)(en)
- Inland waterway notice marks (RIWR, Russia)(en)
JOSM presets & styles
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)
- U.S. Aids to Navigation System – also details the Western Waters Marking System, Intracoastal Waterway system, and Uniform State Waterway Marking System