Mark 21 torpedo
The Mark 21 torpedo, designated Mark 21 Mod 0 was a passive acoustic homing torpedo designed in 1943 by Westinghouse Electric Corporation. The Mark 21 successfully passed launching tests in 1943, however, due to difficulties encountered by Westinghouse, the project was abandoned after a few development models had been built. It was based on the widely used Mark 13 torpedo.
Mark 21 torpedo
- Name
- Mark 21 torpedo
- Field
- torpedo
- Region
- United States
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wikidata · Q15991074
In this article
Overview
Overview
Propulsion was switched to electric, but weight restrictions limited the speed available.
Key facts
Key facts
• Name — Mark 21 torpedo • Origin — United States • Type — Anti-surface ship torpedo • Is Ranged — yes • Is Explosive — yes • Is Missile — yes • Service — never in service • Designer — Westinghouse Electric Corporation • Design Date — 1943 • Variants — Mark 21 Mod 2 torpedo • Weight — approx. 2300 lb • Length — 161 in • Diameter — 22.5 in • Filling — HBX • Filling Weight — 400 lb • Detonation — Mark 8 contact exploder • Engine — Electric • Speed — 25 kn • Guidance — passive acoustic homing • Launch Platform — Aircraft
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- United States
Named but not plotted · 1
Mark 21 torpedo is associated with United States.
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Part of the biographical narrative on this page reuses licensed material. Its origin, revision and licence are recorded here.
The biographical narrative on this page is based on the Wikipedia article Mark 21 Mod 0 torpedo, revision 1254427725 (EN edition), by its contributors. VALÉORINE has edited that text and built its own documentary record around it. The reused material is available under CC BY-SA 4.0, and this page's reuse of it is offered under the same licence. Everything else on this page — the chronology, the holdings, the evidence, the plates and the connections — is VALÉORINE's own record. Sources and licences.
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reference work
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The Encyclopedia exists whether or not anything is for sale. Corrections are recorded rather than overwritten, and every version of this record is kept. Published 17 August 2026.
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