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SM U-81

submarine of the German Imperial Navy
Vehicle u_boat Q2207369
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Summary

SM U-81 is an U-boat[1]. It ranks in the top 6% of u_boat entities by monthly Wikipedia readership (26 views/month).[2]

Key Facts

  • SM U-81's instance of is recorded as U-boat[3].
  • SM U-81 is operated by Imperial German Navy[4].
  • SM U-81's manufacturer is recorded as Friedrich Krupp Germaniawerft[5].
  • SM U-81's yard number is recorded as 251[6].
  • SM U-81's coordinate location is recorded as {'latitude': 51.55, 'longitude': -13.63333333}[7].
  • SM U-81's significant event is recorded as ship launching[8].
  • SM U-81's significant event is recorded as keel laying[9].
  • SM U-81's location of creation is recorded as Kiel[10].
  • SM U-81's described by source is recorded as uboat.net[11].
  • SM U-81's different from is recorded as UC-81[12].
  • SM U-81's different from is recorded as U-81[13].
  • SM U-81's length is recorded as {'amount': '+70.06'}[14].
  • SM U-81's beam is recorded as {'amount': '+6.30'}[15].
  • SM U-81's draft is recorded as {'amount': '+4.02'}[16].
  • SM U-81's country of registry is recorded as German Reich[17].

Why It Matters

SM U-81 ranks in the top 6% of u_boat entities by monthly Wikipedia readership (26 views/month).[2] It has Wikipedia articles in 7 language editions, a strong signal of global cultural recognition.[18] It is known by 7 alternative names across languages and contexts.[19]

References

Programmatic citations — every numbered marker resolves to a verifiable graph row below.

Direct Wikidata claims

  1. [3] ↑ . wikidata.org.
  2. [4] ↑ . wikidata.org.
  3. [5] ↑ . wikidata.org.
  4. [6] ↑ . wikidata.org.
  5. [7] ↑ . wikidata.org.
  6. [8] ↑ . wikidata.org.
  7. [9] ↑ . wikidata.org.
  8. [10] ↑ . wikidata.org.
  9. [11] ↑ . wikidata.org.
  10. [12] ↑ . wikidata.org.
  11. [13] ↑ . wikidata.org.
  12. [14] ↑ . wikidata.org.
  13. [15] ↑ . wikidata.org.
  14. [16] ↑ . wikidata.org.
  15. [17] ↑ . wikidata.org.

Class ancestry

  1. [1] ↑ . Wikidata. wikidata.org.

Aggregate / graph-position facts

  1. [2] ↑ . Wikimedia Foundation. dumps.wikimedia.org.
  2. [18] ↑ . Wikidata sitelinks. wikidata.org.
  3. [19] ↑ . Wikidata aliases. wikidata.org.

📑 Cite this page

Use these citations when quoting this entity in research, articles, AI prompts, or wherever provenance matters. We aggregate Wikidata + Wikipedia + authoritative open-data sources; the stitched, scored, cross-referenced view is what 4ort.xyz contributes.

APA 4ort.xyz Knowledge Graph. (2026). SM U-81. Retrieved October 14, 2026, from https://4ort.xyz/entity/sm-u-81
MLA “SM U-81.” 4ort.xyz Knowledge Graph, 4ort.xyz, 14 Oct. 2026, https://4ort.xyz/entity/sm-u-81.
BibTeX @misc{4ortxyz_sm-u-81_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{SM U-81}}, year = {2026}, url = {https://4ort.xyz/entity/sm-u-81}, note = {Accessed: 2026-10-14}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): SM U-81 — https://4ort.xyz/entity/sm-u-81 (retrieved 2026-10-14)

Canonical URL: https://4ort.xyz/entity/sm-u-81 · Last refreshed:

Edit History

Rolling log of changes to this entity's Wikidata record. Values shown reflect the current state of each edited property — follow the history link to see the precise diff for any edit.

  1. 5w ago · VGMaintenanceBot bot · 2026-09-04 view diff on Wikidata ↗
    Described by source → uboat.net
    Beam → {'amount': '+6.30'}
    Instance of → U-boat
    Significant event → ship launching, keel laying
    + 13 other properties edited (see Wikidata diff for full list)
    "/* wbsetqualifier-add:1| */ Mediawiki page id: 13056, Add qualifier to Dreadnought Project page `S.M.S._U_81_(1916)`"
Live feed via Wikidata EventStreams. New edits appear within minutes of being made on Wikidata.