isolated danger mark
Let an agent explain the isolated danger mark, relay its meaning, appearance and use from maritime navigation sources, and distinguish it from lateral marks, cardinal marks and safe-water marks.
Bundle → Layer → Finding → Questions Filled
4 bundles · 8 layers · 8 findings · 16 questions
Understand What the mark is.
Definition
Definition.
Definition
Definition.
- What is an isolated danger mark, and how does it differ from lateral, cardinal and safe-water marks? definition
- Is the question about navigation safety needing charts and training? boundary
Recognition
Recognition.
Recognition
Recognition.
- How is an isolated danger mark recognised by colour and topmark? definition
- Which entry fits the related mark? action
Appearance Appearance.
Colours
Colours and topmark.
Colours
Colours.
- What colours and topmark identify the mark? provenance
- Which references are standard? provenance
Light
Light pattern.
Light
Light.
- What light pattern does a lit isolated danger mark show? provenance
- Which sources are cited? provenance
Use Use.
Meaning
Meaning.
Meaning
Meaning.
- What should a mariner do on seeing this mark? provenance
- Is proper training and charting needed? boundary
System
Buoyage system.
System
System.
- How does the mark fit the international buoyage system? provenance
- Which entry fits the buoyage system? action
Context Context.
Regions
Regional systems.
Regions
Regions.
- How do buoyage regions affect sea marks? provenance
- Is the information current? boundary
Related
Related marks.
Related
Related.
- How does this mark relate to cardinal and lateral marks? provenance
- Which entry fits the related mark? action
Classifiers Filled
- Family
- Thing Registry
- Category
- Physical world and living systems
- Entry kind
- thing
- Plane
- PHY
- Domain
- PHY.BLT
What it is Filled
A navigational aid used at sea, a buoy or beacon that marks an isolated danger such as a rock or wreck that has navigable water all around it, so vessels know to keep clear; it is one of the standard categories of sea mark defined by the international buoyage system, distinguished by black and red bands and, when lit, a specific flash pattern with two spheres as a topmark. It warns of a point hazard rather than marking a channel side.
Why it exists Filled
Let an agent explain the isolated danger mark, relay its meaning, appearance and use from maritime navigation sources, and distinguish it from lateral marks, cardinal marks and safe-water marks.
Distinguishing features Filled
- Marks a point danger
- Clear water all around
- Black with red bands
- Two-sphere topmark
What robots and AI may and may not do Filled
Must not
- Move, damage, tie up to or interfere with a navigation mark.
- Confuse the mark with cardinal or lateral marks when advising on a passage.
- Pass close to the mark or between it and its danger.
- Rely on the mark's position alone without checking current charts and notices to mariners.
Only with a human decision
- Issuing or changing navigational warnings about a mark.
May
- Identify the mark by its black and red bands, two-sphere topmark and light pattern, citing the buoyage rules.
- Report a mark that is missing, off station, unlit or damaged to the responsible authority.
- Steer an authorized vessel to keep clear of the danger the mark indicates.
Moral aspects Filled
- Mariners' lives depend on marks being where charts say and being read correctly.
- Tampering with aids to navigation endangers every vessel in the area.
Who is affected
- Mariners and crews
- Passengers
- Coastal communities
Owners Filled
Steward
The national lighthouse or navigation authority responsible for aids to navigation in those waters.
Master systems
- Official charts and lists of lights
- Notices to mariners
Links to other meta-models Filled
parent
- Q3565782 - registry parent class
related
- navigational aid - in registry terms
- lateral mark
- cardinal mark
- safe-water mark
What else AI and robots need to interact with it Filled
Identity and identifiers required Filled
- Vercy registry: vr.tr.isolated-danger-mark
- Wikidata: Q1310021 (https://www.wikidata.org/wiki/Q1310021)
Direct properties required Filled
- marks: an isolated point danger note
- topmark: two black spheres note
- registry parent: navigational aid note
Recognition required Filled
- Black-and-red buoy with two-sphere topmark
- Isolated danger mark
- Lateral marks show channel sides; cardinal marks show the safe side of a danger; safe-water marks show clear water
- A black buoy or beacon with one or more broad red horizontal bands, topped by two black spheres, flashing in a set group when lit.
Capabilities and actions required Filled
- explain the mark
- relay its appearance and lights
- relay its use
- distinguish it from other marks
Hazards and failure modes required Filled
- Confusing with cardinal or lateral marks
- Misreading the topmark
- Ignoring the light pattern
Standards and interfaces required Filled
- International maritime buoyage system
Context of use required Filled
- Marking an isolated danger with clear water around it.
- lit isolated danger mark
- unlit isolated danger mark
Sources Filled
- Wikidata item Q1310021: isolated danger mark - identity and sense of the item
- Wikipedia: Isolated danger mark - general description of the item
Open questions
- Should lit and unlit versions be distinguished?
- How should the buoyage system be linked?
- How should regional buoyage differences be noted?
Machine files
Provenance
thing registry research (pass 2) · unreviewed
Built from: models/things/publications/thing-q1310021/spec.json