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Sea Frontier

WWII command of the United States Navy

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General referenceInterpretive dossier study · Crown Archives visual atlas
Record originEnglish Wikipedia
Text licenseCC BY-SA 4.0
Source revisionSep 10, 2026
Entity authorityQ7439894 ↗
Source-derived summary

Sea Frontiers were several, now disestablished, commands of the United States Navy as areas of defense against enemy vessels, especially submarines, along the U.S. coasts. They existed from 1 July 1941 until in some cases the 1970s. Sea Frontiers generally started at the shore of the United States and extended outwards into the sea for a nominal distance of two hundred miles.

As early as 1927 the Navy's plans for the coastal defense of the United States and its Territories and possessions provided for the establishment of Naval Coastal Frontiers that would be larger operational commands than the individual Naval Districts. On 1 July 1941, the Chief of Naval Operations formally established several Naval Coastal Frontiers; on 6 February 1942, these were renamed Sea Frontiers. Each Frontier was a geographic area, usually comprising a number of Naval Districts but including in addition the outer shipping lanes in its sea area. The land areas of the Frontiers corresponded roughly to the Army's Defense Commands, but the boundaries were not identical. The Frontier Commander was usually also the commandant of a Naval District within the Frontier. The chief responsibilities of the Sea Frontiers during World War II were operational; Frontier forces engaged actively in scouting for enemy forces, particularly submarines, and in attack on any enemy units within their boundaries. Toward the end of the war the Frontiers were assigned administrative and logistic functions in addition to their operational responsibilities.

Editorial summary

“Sea Frontier” enters the record as wWII command of the United States Navy. Crown Archives preserves that source wording while asking what Frontier, WWII and command can confirm, complicate or overturn.

Editorial reviewA practical starting point whose main value is the path it opens into stronger specialist and primary sources. The current lead gives the account dated anchors—1941, 1927, 1942—that can be checked directly. The selected authority fields contribute no independent date. Its strongest next move is a source search built around Frontier, WWII and command.
Editorial analysis

Why this record matters

“Sea Frontier” is worth following because a concise public description often conceals a longer documentary argument. Here, Frontier, WWII and command provides the most credible route into that argument.

Evidence profile

Named sources, stable identifiers and responsible institutions provide the strongest route from overview to verifiable evidence. The source revision retrieved here is dated Sep 10, 2026. The linked authority identifier is Q7439894. None of the 0 selected statements returned an explicit reference. The first chronological checks are 1941, 1927 and 1942.

Critical limits

Overview language is designed for orientation and should not be treated as a substitute for the evidence cited beneath it. The lead is largely declarative, so disagreement and counter-evidence require a deliberate search beyond the opening account. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.

How to read it

Use the entry as an orientation point, then follow its citations and revision history. Names, dates and institutional relationships should be checked against the original record.

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  • Subject orientation
  • Search vocabulary
  • Locating named sources
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The closest primary source, responsible institution and strongest cited specialist reference.

Three-step research path

  1. Establish the record: confirm the title “Sea Frontier”, its source revision and the description used here.
  2. Expand the search: follow Sea Frontier primary sources, Sea Frontier archive and Frontier research across catalogues and specialist indexes.
  3. Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.

Questions for further research

  1. Which source most directly establishes the central claim about “Sea Frontier”?
  2. Which institution is responsible for the underlying evidence?
  3. What terminology or title could unlock a more precise catalogue search?
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Source & attribution

This entry incorporates text from “Sea Frontier” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.