User:Biff/OpenSeaMap/Signal Stations

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Signal Station

A signal station is a place on shore from which signals are made to ships at sea (IHO Dictionary, S-32, 5th Edition, 4742). This object class is used to describe the function of the signal station rather than the structure on which the station is sited.

The tags defined on this page will render on the various OpenSeaMap charts. See: OpenSeaMap.org

This page defines values for the "seamark:type" tag for signal stations and their attribute tags.

Types

Type S100 Code seamark:type Definition Example Renderings Photo
Signal station, traffic SISTAT signal_station_traffic A signal station to control the movement of marine traffic in a port area. Signal Station.png Hull Marina Light.png
Signal station, warning SISTAW signal_station_warning A signal station to indicate presence or imminence of some hazardous condition to navigation.
Example
seamark:type=signal_station_traffic

Categories

Signal station, traffic

Category (CATSIT) signal_station_traffic:category Definition
port control port_control a signal station for the control of vessels within a port.
port entry and departure port_entry_and_departure a signal station for the control of vessels entering or leaving a port.
International Port Traffic international_port_traffic a signal station displaying International Port Traffic signals.
berthing berthing a signal station for the control of vessels when berthing.
dock dock a signal station for the control of vessels entering or leaving a dock.
lock lock a signal station for the control of vessels entering or leaving a lock.
flood barrage flood_barrage a signal station for the control of vessels wishing to pass through a flood control barrage.
bridge passage bridge_passage a signal station for the control of vessels wishing to pass under a bridge.
dredging dredging a signal station indicating when dredging is in progress.
traffic control light traffic_control_light visual signal lights placed in a waterway to indicate to shipping the movements authorised at the time at which they are shown.
Example
seamark:signal_station_traffic:category=international_port_traffic

Signal station, warning

Category (CATSIW) signal_station_warning:category Definition
danger danger a signal or message warning of the presence of a danger to navigation.
maritime obstruction maritime_obstruction a signal or message warning of the presence of a maritime obstruction.
cable cable a signal or message warning of the presence of a cable.
military practice military_practice a signal or message warning of activity in a military practice area.
distress distress a station that may receive or transmit distress signals.
weather weather a visual signal displayed to indicate a weather forecast.
storm storm a signal or message conveying information about storm conditions.
ice ice a signal or message conveying information about ice conditions.
time time an accurate signal marking a specified time or time interval. It is used primarily for determining errors of timepieces. Such signals are usually sent from an observatory by radio or telegraph, but visual signals are used at some ports.
tide tide a signal or message conveying information on tidal conditions in the area in question.
tidal stream tidal_stream a signal or message conveying information on condition of tidal currents in the area in question.
tide gauge tide_gauge a device for measuring the height of tide. A graduated staff in a sheltered area where visual observations can be made; or it may consist of an elaborate recording instrument making a continuous graphic record of tide height against time. Such an instrument is usually actuated by a float in a pipe communicating with the sea through a small hole which filters out shorter waves.
tide scale tide_scale a visual scale which directly shows the height of the water above chart datum or a local datum.
diving diving a signal or message warning of diving activity
water level gauge water_level_gauge a device for measuring and conveying information about the water level (non-tidal) in the area in question.
Example
seamark:signal_station_warning:category=tide_gauge

Attributes

Relevant attributes for signal stations, as also listed in OpenSeaMap/Seamark Attributes.

Attribute Acronym attribute key Definition Expected input
Communication channel COMCHA channel=* A channel number assigned to a specific radio frequency, frequencies or frequency band. enter specific VHF-Channel
Date end DATEND end_date=* The attribute 'date end' indicates the latest date on which an object (e.g. a buoy) will be present.

This attribute is to be used to indicate the removal or cancellation of an object at a specific date in the future. See also 'periodic date end'

Date. Slight name and format differences!
Date start DATSTA start_date=* The attribute 'date, start' indicates the earliest date on which an object (e.g. a buoy) will be present.

This attribute is to be used to indicate the deployment or implementation of an object at a specific date in the future. See also 'periodic date start'.

Date. Slight name and format differences!
Object name in national language NOBJNM ? see maybe nat_name=*
Object name OBJNAM name see OpenSeaMap/Seamark_Attributes and maybe name=*
Periodic date end PEREND ? see OpenSeaMap/Seamark_Attributes and maybe service_times=*
Periodic date start PERSTA ? see OpenSeaMap/Seamark_Attributes and maybe service_times=*
Status STATUS status see OpenSeaMap/General_Attributes#Status_.28STATUS.29_-_The_condition_of_an_object_at_a_given_instant_in_time

References

Seamark Tag Values
Seamark Objects
Seamark Attributes
INT-1 Cross Reference