HMS Mourne
1942 River-class frigate
HMS Mourne (K261) was a River-class frigate of the Royal Navy (RN). Mourne was built to the RN's specifications as a Group II River-class frigate. She served in the North Atlantic during World War II.
As a River-class frigate, Mourne was one of 151 frigates launched between 1941 and 1944 for use as anti-submarine convoy escorts, named after rivers in the United Kingdom. The ships were designed by naval engineer William Reed, of Smith's Dock Company of South Bank-on-Tees, to have the endurance and anti-submarine capabilities of the Black Swan-class sloops, while being quick and cheap to build in civil dockyards using the machinery (e.g. reciprocating steam engines instead of turbines) and construction techniques pioneered in the building of the Flower-class corvettes. Its purpose was to improve on the convoy escort classes in service with the Royal Navy at the time, including the Flower class.
After commissioning in April 1943, Mourne served in convoy escort missions and participated in anti-submarine warfare exercises off Lough Foyle and Larne.
Following the Normandy landings of Operation Overlord, Mourne was deployed to the western entrance of the English Channel as a screening operation, serving as part of the 5th Escort Group. At 13:45 on 15 June 1944, the bow of Mourne was hit by a GNAT torpedo fired by German submarine U-767, causing an ignition in the ship magazine. The ship was sunk with the loss of 111 lives and 27 survivors.
Begin with the source’s own compact description: “HMS Mourne” is 1942 River-class frigate. The dossier treats that line as a proposition to test through Mourne, River-class and frigate, not as a finished interpretation.
Why this record matters
The phrase “1942 River-class frigate” supplies a clear boundary for inquiry. It also exposes the unanswered questions: who defined that boundary, when it became stable and which sources sit outside it.
Place names and jurisdictional language are key evidence: both can reveal earlier catalogue descriptions and overlooked record series. The source revision retrieved here is dated Sep 17, 2026. The linked authority identifier is Q96380123. None of the 0 selected statements returned an explicit reference. The first chronological checks are 1941, 1944 and 1943.
A single description cannot reconcile every naming convention, rebuilding phase or administrative transfer associated with a place. 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
Treat names, boundaries and functions as historically changeable. Maps, plans, inventories and administrative records can clarify what the place meant at different dates.
- Historic place names
- Jurisdictional context
- Routes into maps and plans
Contemporary maps, plans, listed-building records, estate papers and the responsible local or national archive.
Three-step research path
- Establish the record: confirm the title “HMS Mourne”, its source revision and the description used here.
- Expand the search: follow HMS Mourne primary sources, HMS Mourne archive and Mourne research across catalogues and specialist indexes.
- Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.
Questions for further research
- Which source most directly establishes the central claim about “HMS Mourne”?
- Which authority defined the place, boundary or structure at the relevant date?
- What physical evidence or contemporary plan supports the description?
Search terms from this dossier
This entry incorporates text from “HMS Mourne” 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.