Topmark (2) - Revision history

Minsuids at 12:00, 4 February 2024

2024-02-04T12:00:54Z

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	[[Category:Alphabetical Index]]		[[Category:Alphabetical Index]]
	[[Category:IALA Dictionary 1970-89 Edition]]		[[Category:IALA Dictionary 1970-89 Edition]]
			[[Category:IALA Dictionary 2023 Revision]]

Oferiks: 1 revision

2009-03-01T10:02:32Z

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Oferiks: 1 revision

2009-02-25T10:11:00Z

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	Note 5: In the U.S.A. the word Daymark is often used for a topmark.		Note 5: In the U.S.A. the word Daymark is often used for a topmark.

	[[Image:Ch2_Fig65.jpg\|400px]]		[[Image:Ch2_Fig65.jpg\|400px\|border]]

	[[Image:Ch2_Fig66.jpg\|400px]]		[[Image:Ch2_Fig66.jpg\|400px\|border]]

	{{IALAFooter}}		{{IALAFooter}}

Oferiks: 1 revision

2009-02-25T00:11:00Z

1 revision

← Older revision	Revision as of 00:11, 25 February 2009
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Oferiks at 13:00, 15 February 2009

2009-02-15T13:00:00Z

New page

'''2-6-255

One or more relatively small objects of characteristic shape or colour (or both), placed on top of a navigation mark (or buoy) to identify it. (Figs. 65 and 66)

Note 1: A topmark may be

*a. Simple
*b. Composite, viz. made up of two or three individual topmarks.

Note 2: The following characteristic apparent shapes of topmarks are internationally recognised for the lateral system of marking (or buoyage):

*Cone
*Can
*Sphere
*Diamond
*St. George's Cross
*"T"
*Broom

A broom topmark has the appearance of a circular broomhead and has two forms "Broom, point upwards" (in German, "mit Besen abwarts") and "Broom, point downwards" (in German, "mit Besen aufwarts").

Note 3: The following characteristic apparent shapes of topmarks are internationally recognised for the cardinal system of marking (or buoyage):

*Two cones, point upwards
*Two cones, point downwards
*Two cones, point to point
*Two cones, base to base

Note 4: Other forms (e.g. St. Andrew's Cross) are used, for example, as landfall marks.

Note 5: In the U.S.A. the word Daymark is often used for a topmark.

[[Image:Ch2_Fig65.jpg|400px]]

[[Image:Ch2_Fig66.jpg|400px]]

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{{languages|Topmark (2)}}
[[Category:2.6 Visual Aids in general: Buoyage and Beaconage]]
[[Category:Alphabetical Index]]
[[Category:IALA Dictionary 1970-89 Edition]]