Property talk:P587

Latest comment: 8 months ago by Infrastruktur in topic Adding required qualifier

Documentation

MMSI
Maritime Mobile Service Identity of a ship station. Format 8 or 9 digits
Descriptionship identification number assigned by the Maritime Mobile Service, MMSI.
Has qualitynumeric identifier (Q93868746)
Data typeExternal identifier
Template parameteren:Template:MMSI Number, used as as subtemplate of en:Template:Infobox ship career - Template:MMSI Number (Q14441357)
Domain
According to this template: ship (Q11446) or more generally watercraft (Q1229765) : ship stations, boats and other marine vessels
According to statements in the property:
watercraft (Q1229765), radio communication station (Q1474493), beacon (Q7321258), Maritime Rescue Coordination Centre (Q56885501) or oil platform (Q689880)
When possible, data should only be stored as statements
Allowed values\d{8,9} (numeric string, 8 or 9 digits)
ExampleEbba Mærsk (Q4037895)220497000
Queen Mary 2 (Q191888)310627000
Sourcevarious sources, exists in some infoboxes for ships, otherwise easily found (note: this information should be moved to a property statement; use property source website for the property (P1896))
Formatter URLhttps://www.vesselfinder.com/vessels/details/$1
https://sd.ic.gc.ca/pls/engdoc_anon/mmsi_search.Ship_Search?inMMSI=$1&inVesName=&inName=&inCallsign=&inVesId=
https://sd.ic.gc.ca/pls/frndoc_anon/mmsi_search.Ship_Search?inMMSI=$1&inVesName=&inName=&inCallsign=&inVesId=
https://www.marinetraffic.com/en/ais/details/ships/mmsi:$1/
Tracking: sameno label (Q28979889)
Tracking: differencesno label (Q28979899)
Tracking: usageCategory:Pages using Wikidata property P587 (Q28979903)
Tracking: local yes, WD nono label (Q28979894)
See alsomaritime identification digits (P2979), IMO ship number (P458), ENI number (P5910)
Lists
Proposal discussionProposal discussion
Current uses
Total37,976
Main statement37,968>99.9% of uses
Qualifier3<0.1% of uses
Reference5<0.1% of uses
Search for values
[create Create a translatable help page (preferably in English) for this property to be included here]
Distinct values: this property likely contains a value that is different from all other items. (Help)
Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P587#Unique value, SPARQL (every item), SPARQL (by value)
Format “\d{8,9}: value must be formatted using this pattern (PCRE syntax). (Help)
List of violations of this constraint: Database reports/Constraint violations/P587#Format, hourly updated report, SPARQL
Allowed entity types are Wikibase item (Q29934200): the property may only be used on a certain entity type (Help)
Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P587#Entity types
Required qualifier “point in time (P585): this property should be used with the listed qualifier. (Help)
Exceptions are possible as rare values may exist. Exceptions can be specified using exception to constraint (P2303).
List of violations of this constraint: Database reports/Constraint violations/P587#mandatory qualifier, SPARQL
Single best value: this property generally contains a single value. If there are several, one would have preferred rank (Help)
List of violations of this constraint: Database reports/Constraint violations/P587#single best value, hourly updated report, SPARQL
  Pattern ^MMSI: -$ will be automatically replaced to novalue.
Testing: TODO list

Single-value constraint

edit

The MMSI number usually changes when the ships change owner, so I think the single-value constraint should change to a single-best-value constraint. Infrastruktur (talk) 13:10, 12 December 2023 (UTC)Reply

On second thought, since this number is akin to phone numbers, there is little point in keeping old values around. So never mind. Infrastruktur (talk) 23:35, 7 January 2024 (UTC)Reply

Adding required qualifier

edit

Since MMSI codes tend to change with new owners I'm considering adding "point in time" as a required qualifier to keep track of which ones are outdated. Any objections or blessings? Infrastruktur (talk) 11:26, 27 March 2024 (UTC)Reply

I should add here that I did consider "start time" and "end time" too. But I'm not interested in keeping a log of all the MMSI codes the ship has had in the past. We also may not have access to all the ship's registry details, but we do definitely know if the MMSI code is valid the day it is added, and that is all that I'm interested in. Infrastruktur (talk) 17:20, 28 March 2024 (UTC)Reply

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