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UD-3

1940 O 21-class submarine
Vehicle u_boat Q2457011
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UD-3

Summary

UD-3 is an U-boat[1]. UD-3 ranks in the top 6% of u_boat entities by monthly Wikipedia readership (7 views/month).[2]

Key Facts

  • UD-3's instance of is recorded as U-boat[3].
  • UD-3's operator is recorded as Kriegsmarine[4].
  • UD-3's vessel class is recorded as O 21-class submarine[5].
  • UD-3's Commons category is recorded as Hr.Ms. O 25 (submarine, 1940)[6].
  • UD-3's participated in conflict is recorded as World War II[7].
  • UD-3's Freebase ID is recorded as /m/0wfv3l4[8].
  • UD-3's significant event is recorded as ship launching[9].
  • UD-3's significant event is recorded as ship decommissioning[10].
  • UD-3's significant event is recorded as keel laying[11].
  • UD-3's country of registry is recorded as Nazi Germany[12].

Why It Matters

UD-3 ranks in the top 6% of u_boat entities by monthly Wikipedia readership (7 views/month).[2] UD-3 has Wikipedia articles in 6 language editions, a strong signal of global cultural recognition.[13]

Related Entities

Nazi Germany

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.

Class ancestry

  1. [1] ↑ . Wikidata. wikidata.org.

Aggregate / graph-position facts

  1. [2] ↑ . Wikimedia Foundation. dumps.wikimedia.org.
  2. [13] ↑ . Wikidata sitelinks. 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). UD-3. Retrieved May 3, 2026, from https://4ort.xyz/entity/ud-3
MLA “UD-3.” 4ort.xyz Knowledge Graph, 4ort.xyz, 3 May. 2026, https://4ort.xyz/entity/ud-3.
BibTeX @misc{4ortxyz_ud-3_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{UD-3}}, year = {2026}, url = {https://4ort.xyz/entity/ud-3}, note = {Accessed: 2026-05-03}}
LLM prompt According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): UD-3 — https://4ort.xyz/entity/ud-3 (retrieved 2026-05-03)

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