Key:seamark:topmark:colour_pattern

Attribute key to specify the colour pattern of topmarks of sea marks.

How to map

Place a node and add the following tags:

seamark:type=*
seamark:beacon... or seamark:buoy...
seamark:topmark:shape=*
seamark:topmark:colour=*
seamark:topmark:colour_pattern=*

Possible values

Main article: Seamarks/Colours#Colour_Patterns

Painted object with more than one colour can be specified by listing those colours in a semi-colon separated list. When this is done, a colour pattern tag must be used in addition to the colour tag.

Colour patterns

Pattern (COLPAT)	seamark:<object>:colour_pattern	Definition	Rendering
Horizontal stripes	horizontal	Straight bands or stripes of differing colours painted horizontally.
Vertical stripes	vertical	Straight bands or stripes of differing colours painted vertically.
Diagonal stripes	diagonal	Straight bands or stripes of differing colours painted diagonally.
Squared	squared	Often referred to as checker plate, where alternate colours are used to create squares similar to a chess or draught board. The pattern may be straight or diagonal.
Stripes (direction unknown)	stripes	Straight bands or stripes of differing colours painted in an unknown direction.
Border stripe	border	A band or stripe of colour which is displayed around the outer edge of the object, which may also form a border to an inner pattern or plain colour.
Vertical cross	cross	A vertical cross of one colour painted on a background of a different colour.
Diagonal cross	saltire	A diagonal cross of one colour painted on a background of a different colour.

Rendering order

• Top-to-bottom
• Left-to-right
• Background
• Border.

More than one pattern can be similarly specified and the colours are assigned to the patterns in their listed order.

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

• https://github.com/OpenNauticalChart/josm

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