Evidence
13 evidence entries recorded; each entry has a stable permalink (#ev-1 … #ev-13).
-
[1]research packet 1044-packet.md (4 sources cited) [museum_official]
- Finding type
- vessel_history
- Finding
- Identity packet verdict: VERIFIED
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Evidence ID
- uss-yms-27-yms27-pkt-1044-packet-md
-
[2]NavSource Online: Mine Warfare Vessel Photo Archive, YMS-27 - designation timeline, specifications, disposal (page verified live 2026-10-04) [museum_official]
- Locator
- NavSource 11/19027.htm header block, timeline, and specifications block
- Finding type
- vessel_history
- Finding
- NavSource timeline for this hull: laid down 24 December 1941 as YMS-27 by the Greenport Basin and Construction Co., Greenport, Long Island, NY; launched 7 March 1942; completed 30 June 1942. Shakedown cruise escorting a floating drydock to Guantanamo Bay, Cuba, then returned to the Newport News/Hampton Roads marshalling area for the amphibious invasion of North Africa; deployed with American forces from Oran to Tunis and Bizerte; participated in the landings on Sicily; during the invasion of Salerno laid a smoke screen for cruisers in deeper water; took part in the invasion of southern France. Transferred to France 9 October 1944 and named Hortensia (D 333); sold to France 21 March 1949; struck from the Naval Register 28 April 1949; reclassified D-19 and M-659; decommissioned 8 March 1961; fate unknown. Specifications: 270 t.; 136' length; 24'6" beam; 8' draft; 15 kts; complement 32; armament one 3"/50 dual-purpose mount, two 20mm mounts, two depth-charge projectors; propulsion two 880 bhp General Motors 8-268A diesel engines, Snow and Knobstedt single reduction gear, two shafts. Call sign Nan-Baker-King-Baker. Page states 'There is no DANFS history available for YMS-27.'
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- 1941-1961
- Population
- Greenport construction trades (1941-42); US Navy crew (~32, 1942-44); French Navy crew (1944-61)
- Limitations
- NavSource is a volunteer secondary compilation, not a primary registry - its milestone dates are corroborated by uboat.net and the Greenport yard output table (ev-02, ev-04). 'Completed 30 June 1942' is carried as the commissioning-equivalent date; uboat.net labels the same date 'Commissioned'. NavSource's text attaches the name 'Operation Husky' to the southern France landing - Husky was the Sicily operation; the southern-France operation was Dragoon (see ev-10 correction row). Page contains no asbestos or material content.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-27-01
-
[3]uboat.net Allied Warships, USS YMS-27 (YMS-27), ship/9443 - build/milestone table (page verified live 2026-10-04) [other_primary]
- Locator
- uboat.net ship/9443.html data table
- Finding type
- vessel_history
- Finding
- uboat.net record for this hull: ordered 1 April 1941; built by Greenport Basin and Construction Co., Greenport, Long Island, New York; laid down 24 December 1941; launched 7 March 1942; commissioned 30 June 1942; end service 9 October 1944 - transferred to France and renamed Hortensia. No commanding officers are listed for this vessel.
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- 1941-1944
- Population
- Greenport construction trades (1941-42); US Navy crew (1942-44)
- Limitations
- Specialist secondary database (Gudmundur Helgason's Allied Warships); corroborates NavSource on every shared milestone and adds the contract order date (1 April 1941). 'Commissioned 30 Jun 1942' vs NavSource 'Completed' - same date, carried as commissioning. No asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-27-02
-
[4]National Archives, Special List 44, List of Logbooks of the United States Navy, 1941-1945, by Ship Number (YMS-27 entry) [other_primary]
- Locator
- PDF page 117, YMS-27 entry: 10/1/1942-10/9/1944 (verified by direct PDF text extraction)
- Finding type
- vessel_history
- Finding
- NARA Special List 44, an index of U.S. Navy deck logs by ship number, lists YMS-27 with logbook coverage 10/1/1942 through 10/9/1944 (PDF page 117). The end date coincides with the 9 October 1944 transfer to France documented by NavSource and uboat.net - US Navy logs stop at foreign transfer. This is coverage of the US-service window, not evidence about the construction or pre-October-1942 period.
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Limitations
- A logbook index is a history locator, not a commissioning order, engineering drawing, or material record. It does not establish asbestos presence, products, quantity, individual exposure, causation, or legal eligibility. The logs themselves are undigitized; this index only confirms NARA holds the window.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-27-03
-
[5]Shipbuilding History (shipbuildinghistory.com), Greenport Basin & Construction Co. yard output table, YMS 27 row - ARCHIVED COPY (Wayback 2018-05-17 capture; live njscuba mirror returned HTTP 500 this session) [other_primary]
- Locator
- Greenport yard table, 'YMS 27' row (archived capture)
- Finding type
- vessel_history
- Finding
- Yard output table for this hull's builder: YMS 27, US Navy, minesweeper, 278 d.t., 136 ft, completed 30 June 1942 - annotated 'To France 1944 as Hortensia (D 333/D 19/M 659), condemned 1961 as Q 207.' Confirms the builder, completion date, French transfer, later pennant sequence, and the 1961 condemnation under the Q 207 hulk designation.
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- 1941-1961
- Population
- Greenport Basin construction trades (1941-42)
- Limitations
- Secondary yard-output compilation retrieved from a Wayback capture because the live mirror returned HTTP 500 on 2026-10-04 - the archived row is cited, not the unreachable live page. 'Condemned 1961 as Q 207' supplies the French-era end that NavSource leaves as 'fate unknown'. No asbestos content; Greenport Basin is not an Atlas shipyards.json entry.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-27-04
-
[6]Hezez, Guillaume, 'Mer: Surveillance maritime et fluviale en Indochine,' Revue Historique des Armees no. 192 (1993), pp. 142-143, via Persee (page verified live 2026-10-04) [other_primary]
- Locator
- Persee rharm_0035-3299_1993_num_192_3_4289, section (6)-(7) 'Hortensia, Jasmin', p. 142
- Finding type
- vessel_history
- Finding
- French Navy service under the name Hortensia: the Revue Historique des Armees Indochina survey records that coastal minesweepers Y.M.S. 27 and 29 (Hortensia and Jasmin), 280 tonnes, were ceded to France by the United States in October 1944; Hortensia arrived in Indochina in December 1947 and was employed on maritime surveillance off Annam and in the Gulf of Siam (1949-1950) and on riverine surveillance on the Mekong until September 1950, including direct and indirect protection of Mekong convoys (December 1947) and combined operations with the D.N.E.O.'s LCT/LCM craft on the Soirap and Vaico waterways in December 1948.
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- 1944-1950
- Population
- French Navy crew, Indochina (1947-50)
- Limitations
- French scholarly military-history journal (Revue Historique des Armees, official service-history review) - the strongest single source for the Indochina career. The same paragraph says the pair were 'mis sur cale en avril 1941' (laid down April 1941), which conflicts with NavSource/uboat.net's 24 December 1941 keel date and likely conflates the 1 April 1941 order date - discrepancy carried in gaps; the keel date carried here is the US-side 24 December 1941. No asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-27-05
-
[7]Poste Navale Militaire (postenavalemilitaire.com), 'HORTENSIA (1944/1961)' vessel file (page verified live 2026-10-04) [other_primary]
- Locator
- postenavalemilitaire.com t422 vessel file - HISTORIQUE and CARACTERISTIQUES sections
- Finding type
- vessel_history
- Finding
- French-service narrative corroboration: the naval postal-history association record for Hortensia states that the ex-YMS-27, transferred to France in October 1944 as D 333, joined the 33rd Minesweeper Division and took the name Hortensia; arrived at Saigon in 1947 in the 33rd Division des Dragueurs-Patrouilleurs; left Indochina at the end of 1950 for Brest, where she finished her career; in service 9 October 1944 (Marine Nationale), disarmed 8 March 1961. Hull symbols D333, D19, M659; French-era particulars 280 t, 41.45 m, 1,000 cv, 12 knots, 30-man crew, one 76 mm gun, two 20 mm Oerlikons, two 13.2 mm machine guns.
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- 1944-1961
- Population
- French Navy crew (1944-61)
- Limitations
- Specialist enthusiast/association compilation (naval postal-history society), not an official French Navy record - used only for French-service narrative corroboration, consistent with the Revue Historique des Armees dates (ev-05). French-era figures (280 t, 30 crew, 12 kts) differ from US figures per differing conventions - see gaps. No asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-27-06
-
[8]NavSource Auxiliary Minesweeper class index (class history text), 11/19idx.htm (page verified live 2026-10-04) [other_primary]
- Locator
- NavSource 11/19idx.htm class-index text and type-specification sidebar
- Finding type
- vessel_history
- Finding
- Class context for this hull: auxiliary motor minesweepers were small wood-hulled minesweepers commissioned for WWII service, numbered but unnamed, built at 35 yacht/boatyards rather than larger shipyards; 561 hulls were produced 1941-45. The only significant variation within the type was appearance - YMS-1 through -134 had two stacks, YMS-135 through -445 (plus -480/-481) had one, and YMS-446 through -479 had none; YMS-27 falls in the original two-stack group. Surviving YMSs were reclassified AMS in 1947 and MSC(O) in 1955 - this hull was no longer American by then, having transferred to France in 1944.
- Verification
- verified
- Role
- context
- Documentation level
- class_or_era
- Accessed
- 2026-10-04
- Study period
- 1941-1969 (type history)
- Limitations
- Class background only; the class sidebar's generic figures (320 t, 33 complement, 12-kt designed speed) differ from the hull page's (270 t, 32, 15 kts) - measurement-convention and fit differences carried in gaps. No asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-27-07
-
[9]Era inference built on: NavSource YMS-27 spec block (two GM 8-268A diesels, two shafts - no steam plant); NavSource Auxiliary Minesweeper class index and shipbuildinghistory YM page (wooden-hulled YMS type; 561 built at 35 yacht/boatyards); NavSource class silhouette data (YMS-1 through -134 two-stack group) [other_primary]
- Locator
- NavSource 11/19027.htm specifications block; NavSource 11/19idx.htm class-index text
- Finding type
- asbestos_application
- Finding
- A wooden-hulled, diesel-powered minesweeper completed June 1942 sits inside the Navy's documented asbestos era. Era-standard applications aboard a small diesel combatant of this period were machinery and diesel-exhaust lagging, gaskets, valve packing, and electrical insulation. As a diesel vessel she carried no steam plant - the boiler/turbine lagging pathway of steam vessels does not apply - and her wooden hull carried none of the structural thermal insulation of a steel-hulled steam ship; her asbestos-relevant footprint was correspondingly narrower.
- Verification
- inferred
- Role
- supporting
- Documentation level
- class_or_era
- Accessed
- 2026-10-04
- Study period
- 1941-1961
- Population
- Greenport construction trades (1941-42); US Navy crew (1942-44); French Navy crew (1944-61)
- Limitations
- Class/era inference only - no hull-specific insulation survey, material list, or work package located for YMS-27. Names era-standard applications, not confirmed installed materials. No quantity. No manufacturer attribution for this hull.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-27-08
-
[10]GAO, Navy Efforts To Protect Workers From Asbestos Exposure, HRD-80-2 (Oct 18, 1979) [gao]
- Locator
- GAO product page HRD-80-2 (full text blocked, HTTP 403 confirmed via two methods this session)
- Finding type
- gov_survey
- Finding
- GAO documented that the Navy used asbestos insulation extensively aboard ships and did not begin substituting alternative insulation materials until the early 1970s - spanning this hull's entire construction (1941-42) and US service era (1942-44).
- Verification
- verified
- Role
- context
- Documentation level
- context_only
- Accessed
- 2026-10-04
- Study period
- 1979
- Population
- Navy shipyard workers; asbestos program review
- Limitations
- Program-level documentation; supports era context only, not any fact specific to this hull. Full text not retrieved (gao.gov blocks automated fetch, HTTP 403, confirmed 2026-10-04 via curl and via webfetch) - content via product-page description. Does not establish asbestos aboard this hull, in a YMS vessel, or for any person; no quantity, location, condition, exposure, or causation.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-27-09
-
[11]NavSource 11/19027.htm narrative vs standard operation nomenclature (Husky = Sicily, July 1943; Dragoon = southern France, August 1944); French-side corroboration in postenavalemilitaire 'Hortensia' file ('debarquement de Sicile et de Provence') [other_primary]
- Locator
- NavSource 11/19027.htm narrative line 'Took part in Operation Husky, the invasion of southern France'
- Finding type
- historical_record
- Finding
- CORRECTION: NavSource's narrative states the ship 'Took part in Operation Husky, the invasion of southern France.' Operation Husky was the July 1943 invasion of Sicily; the August 1944 invasion of southern France was Operation Dragoon. The same NavSource text separately credits participation in 'the landings on Sicily' and describes the Salerno smoke-screen mission, so the intended sequence - Sicily (Husky), Salerno, southern France (Dragoon) - is clear; the operation name attached to the southern-France line is a NavSource error, not a distinct event.
- Verification
- verified
- Role
- correction
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Limitations
- Corrects an operation-name slip in the NavSource narrative; does not change any date, location, or service fact. The French-side source independently pairs Sicily and Provence landings. No asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-27-10
-
[12]National Archives, Researching Asbestos aboard US Naval Vessel up through 1961 [other_primary]
- Locator
- Beginning Research; hull-series and S-code discussion (S39 Insulation and Lagging; S48 Piping) - page verified live 2026-10-04
- Finding type
- asbestos_application
- Finding
- NARA's research guide for asbestos aboard U.S. naval vessels identifies ship-specific engineering drawings and related Navy records, including S39 insulation and lagging and S48 piping, as research paths. It expressly cautions that the listed general record series do not themselves provide direct evidence of asbestos in a particular ship or component.
- Verification
- verified
- Role
- archival_lead
- Documentation level
- class_or_era
- Accessed
- 2026-10-04
- Study period
- 1941-1961
- Population
- U.S. naval vessels through 1961
- Limitations
- This is a research-method and archival-context source, not a finding that YMS-27 contained asbestos. No S39/S48 drawing or hull-specific material schedule was retrieved; no product, quantity, condition, exposure, or causation is established.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-27-11
-
[13]Batch-8899 search ledger (this record): NavSource; uboat.net; NARA SL44 deck-log index; shipbuildinghistory Greenport yard table (archived); Revue Historique des Armees via Persee; postenavalemilitaire Hortensia file; NHHC DANFS (no entry); NVR (pre-1987 disposal exclusion); CourtListener opinion and docket indexes; secondary web sweep [other_primary]
- Locator
- search_ledger rows sl-uss-yms-27-01 through sl-uss-yms-27-14
- Finding type
- historical_record
- Finding
- No qualifying ship-specific asbestos record located: no asbestos survey, abatement contract, hazmat disclosure, or qualifying litigation naming USS YMS-27 / Hortensia / D 333 was found in the public sources searched. No DANFS entry exists for this hull - DANFS covered commissioned ships with assigned names, and this craft was numbered but unnamed (NavSource confirms 'no DANFS history available'). NVR carries no entry - ships disposed prior to 1987 are not in the register (US strike 28 April 1949). CourtListener status is recorded in the search ledger; if pacing-blocked it is an open lead, not a negative result.
- Verification
- verified
- Role
- negative_finding
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- 2026-10-04
- Limitations
- Absence of a located public record does not prove absence of asbestos aboard - a wooden-hulled diesel craft of 1942 is era-consistent with limited asbestos applications, but nothing ship-specific documents them. US deck logs (Oct 1942 - Oct 1944) exist at NARA but are undigitized; French-era records are outside US archival holdings. Does not establish or defeat any claim of exposure or legal eligibility.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-27-12