Property talk:P587

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MMSI
Maritime Mobile Service Identity of a ship station. Format 8 or 9 digits

Description	ship identification number assigned by the Maritime Mobile Service, MMSI.
Has quality	numeric identifier (Q93868746)
Data type	External identifier
Template parameter	en: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)
Example	Ebba Mærsk (Q4037895) → 220497000 Queen Mary 2 (Q191888) → 310627000
Source	various 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 URL	https://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: same	no label (Q28979889)
Tracking: differences	no label (Q28979899)
Tracking: usage	Category:Pages using Wikidata property P587 (Q28979903)
Tracking: local yes, WD no	no label (Q28979894)
See also	maritime identification digits (P2979), IMO ship number (P458), ENI number (P5910)
Lists	Items with the most statements of this property Count of items by number of statements (chart) Items with the most statements Items with the fewest statements Count of items by number of sitelinks (chart) Items with the most sitelinks Items with the most sitelinks, but no link to one Wikipedia (sample: Welsh Wikipedia, cywiki) Items with the fewest sitelinks Most linked wikis Items with the most identifier properties Items with no other external identifier Items with no other statements Most recently created items Items with novalue claims Items with unknown value claims Usage history (total) Usage history (main statement) Chart by item creation date Database reports/Constraint violations/P587 Map Random list
Proposal discussion	Proposal discussion
Current uses	Total 37,969 Main statement 37,961 >99.9% of uses Qualifier 3 <0.1% of uses Reference 5 <0.1% of uses
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[create Create a translatable help page (preferably in English) for this property to be included here]

Type “watercraft (Q1229765), radio communication station (Q1474493), beacon (Q7321258), Maritime Rescue Coordination Centre (Q56885501), oil platform (Q689880)”: item must contain property “instance of (P31)” with classes “watercraft (Q1229765), radio communication station (Q1474493), beacon (Q7321258), Maritime Rescue Coordination Centre (Q56885501), oil platform (Q689880)” or their subclasses (defined using subclass of (P279)). (Help)

List of violations of this constraint: Database reports/Constraint violations/P587#Type Q1229765, Q1474493, Q7321258, Q56885501, Q689880, hourly updated report, SPARQL

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)

Single value: this property generally contains a single value. (Help)

List of violations of this constraint: Database reports/Constraint violations/P587#Single value, hourly updated report, SPARQL

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

Pattern ^MMSI: -$ will be automatically replaced to novalue. Testing: TODO list

This property is being used by: ar:قالب:MMSI, ar:قالب:رقم خدمة التعريف البحري المتنقلة en:Template:MMSI Number ca:Plantilla:Infotaula vaixell it:Template:MarineTraffic.com no:Mal:Infoboks skip, no:Mal:Infoboks redningsskøyte, no:Mal:Infoboks skip/testtilfeller, no:Mal:Bøtte og spade nl:Sjabloon:Infobox schip, nl:Sjabloon:Infobox vuurtoren simple:Template:MMSI Number bh:टेम्पलेट:MMSI Number es:Plantilla:Ficha de barco vi:Bản mẫu:MMSI Number ms:Templat:MMSI id:Templat:MMSI, id:Templat:MMSI Number th:แม่แบบ:MMSI, th:แม่แบบ:หมายเลขเอ็มเอ็มเอสไอ min:Templat:MMSI tl:Padron:MMSI Number tr:Şablon:MMSI numarası mni:ꯇꯦꯝꯄ꯭ꯂꯦꯠ:MMSI Number zh-min-nan:Pang-bô͘:MMSI Number ta:வார்ப்புரு:MMSI Number jv:Cithakan:MMSI Number nan:Pang-bô͘:MMSI Number fr:Modèle:Infobox Navire ko:틀:MMSI Number Please notify projects that use this property before big changes (renaming, deletion, merge with another property, etc.)

Single-value constraint

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)

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)

Adding required qualifier

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)

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)