U 21 (U-Boot, 1974)

Thing submarine Q28241881

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U 21 (U-Boot, 1974)

Summary

U 21 (U-Boot, 1974) is a submarine^[1].

Key Facts

U 21 (U-Boot, 1974)'s instance of is recorded as submarine^[2].
U 21 (U-Boot, 1974)'s manufacturer is recorded as Howaldtswerke-Deutsche Werft^[3].
U 21 (U-Boot, 1974)'s vessel class is recorded as Type 206 submarine^[4].
U 21 (U-Boot, 1974)'s different from is recorded as U-21^[5].
U 21 (U-Boot, 1974)'s length is recorded as {'unit': 'http://www.wikidata.org/entity/Q11573', 'amount': '+48.6'}^[6].
U 21 (U-Boot, 1974)'s beam is recorded as {'unit': 'http://www.wikidata.org/entity/Q11573', 'amount': '+4.6'}^[7].
U 21 (U-Boot, 1974)'s Google Knowledge Graph ID is recorded as /g/11c2nzd3vb^[8].

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Quick Facts

Instance of submarine

Properties

Beam unit: www.wikidata.org, amount: +4.6

Different from U-21

Imported from wholeness_audit_2026-05-02_v2

Length unit: www.wikidata.org, amount: +48.6

Manufacturer Howaldtswerke-Deutsche Werft

Vessel class Type 206 submarine

External References (1)

Google knowledge graph id /g/11c2nzd3vb

References

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

Direct Wikidata claims

Class ancestry

[1] ↑ Q28241881 is an instance of submarine (Q2811) [P31, primary]. Wikidata. 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). U 21 (U-Boot, 1974). Retrieved May 7, 2026, from https://4ort.xyz/entity/q28241881

MLA “U 21 (U-Boot, 1974).” 4ort.xyz Knowledge Graph, 4ort.xyz, 7 May. 2026, https://4ort.xyz/entity/q28241881.

BibTeX

@misc{4ortxyz_q28241881_2026, author = {{4ort.xyz Knowledge Graph}}, title = {{U 21 (U-Boot, 1974)}}, year = {2026}, url = {https://4ort.xyz/entity/q28241881}, note = {Accessed: 2026-05-07}}

LLM prompt

According to 4ort.xyz Knowledge Graph (aggregator of Wikidata, Wikipedia, and authoritative open-data sources): U 21 (U-Boot, 1974) — https://4ort.xyz/entity/q28241881 (retrieved 2026-05-07)

Canonical URL: https://4ort.xyz/entity/q28241881 · Last refreshed: May 7, 2026