Evidence
11 evidence entries recorded; each entry has a stable permalink (#ev-1 … #ev-11).
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[1]research packet 1044-packet.md (3 sources cited) [nhhc_danfs]
- Finding type
- vessel_history
- Finding
- Identity packet verdict: VERIFIED
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Evidence ID
- uss-yms-267-yms267-pkt-1044-packet-md
-
[2]NavSource Online: Mine Warfare Vessel Photo Archive, YMS-267 vessel page (data block: builder, laid-down/launch/completion dates, specifications, disposal chain; commanding-officer listing; W. H. Long crew memoir) [other_primary]
- Locator
- NavSource 11/19267.htm data block, specifications block, CO table
- Finding type
- vessel_history
- Finding
- NavSource record for this hull: YMS-1-class auxiliary motor minesweeper laid down 2 July 1942 by the Kruse & Banks Shipbuilding Co. (data block misprints 'Krause'), North Bend, OR; launched 6 March 1943; completed 21 June 1943; declared surplus 5 July 1946; transferred to the War Shipping Administration 16 April 1947 and sold at a fixed price of $15,000 to Charles W. Fair of New York City; stricken from the Navy Register 10 June 1947; fate unknown. Specifications: 270 t; 136' x 24'6" x 8'; 15 kt; complement 32; one 3"/50 DP, two 20mm, two depth-charge projectors; two 880-bhp GM 8-268A diesels, Snow & Knobstedt single-reduction gear, two shafts. CO listed: Lt. (jg) J. J. Dykstra, USNR, 1945.
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- 1942-1947
- Population
- Kruse & Banks construction trades 1942-43; wartime crew (complement 32)
- Limitations
- NavSource is a volunteer-compiled archive, not an official record - used here as the principal consolidated source because no DANFS entry exists for this unnamed craft; every load-bearing fact is corroborated by official records where available (NHHC roster, NHHC photo catalog, NARA SL44, uboat.net). Documents construction, specifications, and disposal - no materials or asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-267-yms267-01
-
[3]NHHC, 'United States Pacific Fleet Organization, 1 May 1945' (official organization table, Navy Department Library online reading room) [nhhc_danfs]
- Locator
- Roster, Mine Squadron TWENTY section (YMS block, printed p. 134); task-force key, printed p. 2 (Task Force 94 = Forward Area, CentPac)
- Finding type
- vessel_history
- Finding
- Official U.S. Pacific Fleet organization table as of 1 May 1945 lists 'YMS 267' under the Mine Squadron TWENTY minecraft grouping with the Task Force 94 marker - TF 94 is the table's Forward Area, Central Pacific command (V. Adm. J. H. Hoover) - commanded by Lt. (jg) J. J. Dykstra (USNR). Confirms the hull in commission on forward-area duty in the Marianas on that date and corroborates the CO named in the NavSource crew memoir.
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- 1945-05-01
- Population
- Crew under Lt. (jg) J. J. Dykstra, USNR, May 1945
- Limitations
- Roster documents assignment and commanding officer only - no materials, asbestos, or operational detail. The TF94 marker is a task-force assignment code from the table's fleet-organization key, consistent with the memoir's Guam-Saipan narrative.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-267-yms267-02
-
[4]NHHC photo catalog NH 79691, 'USS YMS-267' - 'In San Francisco Bay, 1945-1946. Courtesy of D.M. McPherson, 1974.' [nhhc_danfs]
- Locator
- NHHC NH 79691 catalog entry (title, caption, catalog number)
- Finding type
- historical_record
- Finding
- The Naval History and Heritage Command holds one cataloged photograph of this hull, NH 79691, taken in San Francisco Bay in 1945-1946 - an official catalog record confirming hull identity and placing her in San Francisco Bay in the terminal phase of her Navy service.
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- 1945-1946
- Population
- Crew, San Francisco Bay, 1945-46
- Limitations
- Photographic catalog record only - confirms identity and location, contains no materials, condition, or asbestos information.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-267-yms267-03
-
[5]NARA Special List 44, 'List of Logbooks of U.S. Navy Ships, Stations, and Miscellaneous Units, 1801-1947' - ship-number list (PDF p. 117) [other_primary]
- Locator
- sl-44-ship-number.pdf p. 117, entry 'YMS-267 6/21/1943 6/30/1945'
- Finding type
- historical_record
- Finding
- NARA Special List 44 records U.S. Navy deck logs for YMS-267 covering 6/21/1943-6/30/1945 (PDF page 117) - the full span from completion through V-J Day. The logs are the authoritative source for the ship's day-to-day wartime employment; they are held at the National Archives but are not among the digitized deck logs in the National Archives Catalog (the digitized set covers named/redesignated hulls - YMS-267 was never renamed).
- Verification
- verified
- Role
- archival_lead
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- 1943-06-21 to 1945-06-30
- Population
- Crew 1943-45 (log subjects)
- Limitations
- The list documents log coverage, not commissioning or decommissioning dates, and the logs themselves were not read - their contents (daily positions, availabilities, repair entries) are unexamined. Coverage ends 30 June 1945; the postwar log span (Japan sweeping, decommissioning) is not listed.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-267-yms267-04
-
[6]First-person crew memoir: William H. Long, SoM2c, 'YMS-267 History' (served aboard July 1943-July 1945), published on the NavSource vessel page [other_primary]
- Locator
- NavSource 11/19267.htm, 'YMS-267 History' section (attributed to William H. Long, SoM2c)
- Finding type
- vessel_history
- Finding
- Crew memoir for this hull: fitting out at Mare Island and loading at Treasure Island; shakedown to San Diego; daily sweeps of the San Francisco ship channel; Monterey patrol and camera-ship duty for radio-controlled target-aircraft tests; Eureka patrol; departed San Francisco May 1944 via Pearl Harbor and Eniwetok; present off Agat, Guam, on D-Day 21 July 1944 after escorting four LSTs; months of Guam-area sweeping/escort; withdrawn from the Ulithi operation on evaporator failure (sister YMS-385 mined and sunk there); 31 December 1944 engine-room flooding off Guam from a shaft broken in the stuffing box - USS Dempsey (DE-26) alongside with pumps, then salvage tug to a floating drydock at Apra Harbor; Guam-Saipan escort (Peleliu, Iwo Jima), B-29 runway-end rescue duty at Saipan, escort of Japanese fishing boats; collision with LCI-1054 off Saipan shortly after midnight 4 April 1945 (port amidships, superstructure pushed over ~4 inches) and weeks of repairs in a dug slip; second shaft failure; returned to Pearl Harbor July 1945 on one screw and drydocked with USS Toledo (CA-133); postwar sweeping in the Kobe area of Japan; returned to San Francisco and decommissioned April 1946.
- Verification
- partial
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- 1943-1946
- Population
- Wartime crew (complement 32)
- Limitations
- First-person recollection published by a third-party archive - partially corroborated: TF-94 assignment and CO per the NHHC 1 May 1945 roster; 1943-45 service span per NARA SL44; Guam-area presence consistent with both; and LCI(L)-1054 is independently verified operating out of Saipan in the same window (NavSource LCI page: Task Unit 94.19.17 departed Saipan 8 May 1945 for the Northern Marianas). The specific episodes (D-Day position, the 31 Dec 1944 flooding, the 4 Apr 1945 collision, the shaft failures, Japan sweeping) still rest on this memoir alone. Deck logs (ev-04) are the verification path. No asbestos or materials content.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-267-yms267-05
-
[7]uboat.net Allied Warships, 'USS YMS-267 (YMS-267)' warship page (ship ID 9687) [other_primary]
- Locator
- uboat.net ship page 9687, data table (Ordered/Laid down/Launched/Commissioned/History)
- Finding type
- vessel_history
- Finding
- Independent secondary record for this hull corroborating the NavSource data block: built by Kruse & Banks Shipbuilding Co. Inc., North Bend, Oregon; ordered 19 March 1942; laid down 2 July 1942; launched 6 March 1943; commissioned 21 June 1943; 'History: Stricken on 10 June 1947.' The order date is the only build milestone unique to this source.
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- 1942-1947
- Limitations
- Volunteer-maintained secondary database (Allied Warships section, formerly uboat.net/Stone & Stone) - used for corroboration and the order date only; it carries no specification, memoir, or materials detail for this hull. 'Commissioned' terminology vs NavSource's 'Completed' is carried in gaps.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-267-yms267-06
-
[8]HyperWar, 'Ships of the U.S. Navy, 1940-1945 - Minecraft' (transcribed official-type data): YMS class block + vessel table listing 'YMS-267, 1942-5'; NavSource YMS/BYMS class index (design history) [other_primary]
- Locator
- ibiblio.org/hyperwar/USN/ships/ships-dm.html, 'YMS - Motor Minesweepers' section; navsource.net/archives/11/19idx.htm class notes
- Finding type
- historical_record
- Finding
- Class-level record: the YMS-1 type was a wooden-hulled auxiliary motor minesweeper designed by Henry B. Nevins, Inc. - 481 ships of the type with the same general characteristics, built at 35 yacht yards (19 on the West Coast) rather than major shipyards; originally rated as service craft for inshore sweeping ahead of amphibious assaults; YMS-135 through -445 (this hull's block) were the single-stack variant; surviving YMS were reclassified AMS and named in 1947 - this hull was not among them. The minecraft table lists YMS-267 with a 1942-5 service span.
- Verification
- verified
- Role
- context
- Documentation level
- class_or_era
- Accessed
- 2026-10-04
- Study period
- 1941-1947
- Population
- YMS-type construction trades; class-wide crews
- Limitations
- Type-level data - establishes the design context (wooden hull, diesel propulsion, small-craft construction at a yacht yard) and confirms no rename for this hull; gives class-average figures that differ from this hull's NavSource specifications (see gaps). No asbestos or materials content.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-267-yms267-07
-
[9]Era inference built on: NavSource specifications block for this hull (two 880-bhp GM 8-268A diesels, twin shafts; wooden hull per NavSource class index and HyperWar minecraft data); GAO HRD-80-2 program-level finding (see ev-09); NARA RG19 'General Information Books' per-vessel material specifications as an unsearched archival lead [other_primary]
- Locator
- NavSource 11/19267.htm specifications block; NavSource 11/19idx.htm and HyperWar ships-dm.html class data
- Finding type
- asbestos_application
- Finding
- A wooden-hulled motor minesweeper built 1942-43 with twin GM diesel propulsion carries no steam plant - the boiler/steam-line insulation pathway that dominates WWII-era naval asbestos exposure does not apply to this hull. Era-standard asbestos applications on a diesel naval craft of this period were the residual products: diesel-exhaust lagging, gaskets, valve and machinery packing, and electrical insulation; small-craft construction at a yacht yard further narrows the scope versus major-yard steel vessels. Asbestos aboard this hull is a bounded era-consistent inference, materially smaller in likely scope than on contemporary steam vessels but not zero.
- Verification
- inferred
- Role
- supporting
- Documentation level
- class_or_era
- Accessed
- 2026-10-04
- Study period
- 1942-1947
- Population
- Kruse & Banks construction trades 1942-43; wartime crew (complement 32); yard/base trades at Mare Island fitting-out, Apra Harbor and Pearl Harbor repair periods; 1946-47 disposal workers
- Limitations
- Class/era inference only - no hull-specific material list, insulation survey, or work package located; names era-standard applications, not confirmed installed materials. No quantity, no manufacturer attribution. The wooden-hull design narrows but does not eliminate the candidate product set. NARA GIB retrieval not performed.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-267-yms267-08
-
[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)
- 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 (1942-43) and service era (1943-46).
- Verification
- verified
- Role
- context
- Documentation level
- class_or_era
- 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) - content via product-page description.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-267-yms267-09
-
[11]Batch-8896 search ledger (this record): NavSource vessel page + class index; NHHC photo catalog NH 79691; NHHC Pacific Fleet organization table (1 May 1945); NARA Special List 44 ship-number PDF p. 117; NARA digitized deck-log index; HyperWar minecraft table; uboat.net warship page; CourtListener (see ledger for session status); general web litigation sweep; shipyards.json cross-check [other_primary]
- Locator
- search_ledger rows sl-uss-yms-267-yms267-01 through -12
- Finding type
- historical_record
- Finding
- No qualifying ship-specific asbestos record located: no asbestos survey, abatement contract, hazmat disclosure, or verified litigation naming YMS-267 was found in the public sources searched (see search_ledger). A general web sweep for 'YMS-267 asbestos/mesothelioma/litigation' surfaced no qualifying case or document. No ship-specific asbestos content exists in the located official record (NHHC, NARA) or the archive record (NavSource).
- 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 - it proves the public record is thin for this small craft. CAVEAT: the CourtListener docket sweep is partially open - 3 of 4 base queries completed with zero hits, but the bare-hull-number docket query ("YMS-267" type=r) was blocked by the fleet pacer all session and remains a genuine gap (see sl-08). The undigitized deck logs (ev-04) and NARA RG19 General Information Books are the other open verification paths. Does not establish or defeat any claim of exposure or legal eligibility.
- Atlas source
- true
- Evidence ID
- ev-uss-yms-267-yms267-10