USS YMS-324

Evidence

14 evidence entries recorded; each entry has a stable permalink (#ev-1 … #ev-14).

1. [1]research packet 1052-packet.md [other_primary]

   Finding type

   vessel_history

   Finding

   Identity packet verdict: VERIFIED

   Verification

   verified

   Role

   supporting

   Documentation level

   ship_specific

   Evidence ID

   uss-yms-324-yms324-pkt-1052-packet-md

2. [2]Dictionary of American Naval Fighting Ships (DANFS), 'Gull II (YMS-324)' entry - Naval History and Heritage Command (live page verified 2026-10-04, HTTP 200) [nhhc_danfs]

   Locator

   DANFS entry 'Gull II (YMS-324)', spec block + full service narrative + AM-399 footnote

   Finding type

   vessel_history

   Finding

   DANFS record for this hull: the second Gull (AMS-16) was launched as YMS-324 by the Al Larson Boat Shop, Terminal Island, Calif., 14 October 1943; sponsored by Mrs. William Toman; commissioned 28 February 1944, 'Lt. B. F. Silviera, USNR, in command.' After shakedown and minesweeping training, YMS-324 sailed from San Pedro 20 June 1944 via Pearl Harbor and reached Guadalcanal 1 August to prepare for the invasion of Peleliu; swept her first enemy mine 14 September, the day before the 1st Marine Division stormed ashore; continued minesweeping at Peleliu and Ulithi for a month; sailed from Ulithi 14 October for the attack on the Ngulu Islands, sweeping mines under enemy fire without damage or casualties; continued duties at Ulithi until departing 19 March 1945 for Okinawa; aided in clearing the approaches to Okinawa and remained in those waters until the fall of 1945, returning to San Pedro 20 September 1945, '15 months to the day from the time she left.' Redesignated Gull (AMS-16) 18 February 1947; returned to the western Pacific autumn 1947 via Pearl Harbor; put in at Chinnampo, Korea, 2 November 1950 to support UN forces sweeping mines; remained off Chinnampo more than a month, clearing the approaches and allowing an evacuation without loss of life - awarded the Navy Unit Commendation. Redesignated AMCU-46 1 August 1954 and underwent conversion at Yokosuka, Japan; redesignated MHC-46 7 February 1955; returned to Long Beach, Calif., May 1955; peacetime training out of southern California ports until decommissioned at San Diego 14 January 1958; 'disposed of in March 1959.' Awarded two battle stars for World War II service and nine battle stars and the Navy Unit Commendation for Korean service. Spec block: (YMS-324: dp. 270; l. 136'; b. 25'; dr. 8'; s. 14 k; cpl. 34). DANFS footnote: 'Gull was the name assigned to AM-399, to be built by the Defoe Shipbuilding Co., Bay City, Mich., in 1945. The contract was cancelled 16 May 1945.'

   Verification

   verified

   Role

   supporting

   Documentation level

   ship_specific

   Accessed

   2026-10-04

   Study period

   1943-1959 (entry coverage)

   Population

   Al Larson construction trades (1943-44); crew (1944-58); Korean War minesweeping crew (1950-53); SRF Yokosuka conversion trades (1954-55)

   Limitations

   DANFS documents identity, construction, service, designation changes, and disposal - not materials or asbestos content; supports no asbestos claim. Prints 18 February 1947 for the AMS-16 redesignation/naming while NavSource, NavalCoverMuseum, and uboat.net print 17 February - conflict carried in ev-08/gaps. Prints 'Silviera'; the NavSource CO roster prints 'Silveira'. Live NHHC page verified HTTP 200 on 2026-10-04 - unlike the standing link-rot defect noted in Batch 01, this canonical page serves.

   Atlas source

   true

   Evidence ID

   ev-uss-yms-324-yms324-01

3. [3]NavSource Online, Mine Warfare Vessel Photo Archive - Gull (MHC 46) ex-Gull (AMCU 46) ex-Gull (AMS 16) ex-YMS-324 (live page verified 2026-10-04, HTTP 200; milestone list, spec block, commanding-officer roster, photo captions with NARA/NHC credits) [other_primary]

   Locator

   NavSource 11/05016.htm - milestone list, specifications block, commanding-officers table, photo caption credits

   Finding type

   vessel_history

   Finding

   NavSource record for this hull: 'Laid down 3 June 1943 at the Al Larson Boat Shop, Terminal Island, CA; Launched 14 October 1943; Completed and commissioned USS YMS-324, 28 February 1944; Reclassified as a Motor Minesweeper AMS-16, 17 February 1947 and named Gull; Conversion to a Coastal Minesweeper ((Underwater Locator) began 1 August 1954 at the Ship Repair Facility, Yokosuka, Japan; Reclassified AMCU-46, 1 August 1954; Conversion completed 31 January 1955; Reclassified as a Coastal Minehunter MHC-46, 7 February 1955; Decommissioned 14 January 1958 at San Diego, CA; Struck from the Naval Register in March 1959; Fate unknown.' Call sign November-Papa-Zulu-Charlie. Specifications: 270 t., 136', 24'6" beam, 8' draft, 15 kts, complement 32; one 3"/50 dual-purpose mount (replaced by one 40mm mount), two 20mm mounts, two depth-charge projectors; two 880-bhp General Motors 8-268A diesels, Snow and Knobstedt reduction gear, two shafts. Commanding-officer roster: LT Haven B. F. Silveira, USNR (28 Feb 1944 - Sep 1945); LT Archibald W. Wood, USNR (Sep-Dec 1945); LT Philip B. Nottingham, USNR (Dec 1945 - Mar 1946); LTJG K. J. Evans, USNR (Mar-Jun 1946); ENS Harry W. Cox, USNR (Jun 1946); LT Charles Edgar Clark Nimitz, USN, USNA 1947 (1950 - May 1951); LTJG Merritt Douglas Tuel, USNR (May 1951 - Jan 1952); LT J. H. Yates, USNR (Jan-Apr 1952); LTJG John Howard Bell, USN (Apr-Nov 1952); LTJG Rex Calvin Taylor, USNR (Nov 1952); LTJG F. M. Bailey, USN (1953); LCDR Eugene Timothy Connors, USN (1956); LT Dale Vernon Schermerhorn, USN (Bronze Star with Combat V, 1951); LT Jerred Rushton Rockwood, USN. Photo captions add documentary detail: NH 91923 (underway, probably shortly after completion early 1944); NH 79694 (San Francisco Bay, c. 1945-46); NARA 80-G-423775 (Swallow AMS-36 and Gull at Chinnampo, North Korea, November 1950, after clearing a channel more than sixty miles inland from the Yellow Sea up the Taedong River); NARA 80-G-430072 (sweeping during a British Royal Marines commando raid at Chinnampo, 15 June 1951); c. 1953 Sasebo nest with Curlew (AMS-8), Mockingbird (AMS-27), Heron (AMS-18); NH 68589 (c. 1952-54, Dukes County LST-735 as mother ship to seven minesweepers incl. Gull).

   Verification

   verified

   Role

   supporting

   Documentation level

   ship_specific

   Accessed

   2026-10-04

   Study period

   1943-1959

   Population

   Al Larson construction trades (1943-44); commissioned crew 1944-58 (roster of 14 COs); SRF Yokosuka conversion trades 1954-55

   Limitations

   NavSource is a volunteer-maintained archival compilation, not an official registry - its milestone dates generally track DANFS/NVR but conflicts on (a) the AMS-16 naming date (17 vs DANFS 18 February 1947), (b) complement 32 vs DANFS 34, (c) speed 15 kts vs DANFS 14 k, (d) beam 24'6" vs DANFS 25', and (e) first-CO spelling 'Silveira' vs DANFS 'Silviera' - all carried in ev-08/gaps. Photo captions are contributor-submitted with NARA/NHC credits; 'fate unknown' leaves the post-March-1959 disposition undocumented. Contains no asbestos content.

   Atlas source

   true

   Evidence ID

   ev-uss-yms-324-yms324-02

4. [4]Naval Historical Center Online Library of Selected Images, 'USN Ships - USS Gull (AMS-16, later AMCU-46 and MHC-46), 1944-1959, originally named YMS-324' (ibiblio HyperWar mirror of the NHC photo page; live verified 2026-10-04) [other_primary]

   Locator

   ibiblio.org/hyperwar/OnlineLibrary/photos/sh-usn/usnsh-g/ams16.htm - intro paragraph + five captioned photographs

   Finding type

   historical_record

   Finding

   Official U.S. Navy / National Archives photographic record for this hull: NH 91923 - USS YMS-324 underway, probably shortly after completion in early 1944 (Naval Historical Center); NH 79694 - USS YMS-324 in San Francisco Bay, California, after the end of World War II, circa 1945-46 (courtesy Donald M. McPherson, 1974; NHC); 80-G-423775 - USS Swallow (AMS-36) and USS Gull (AMS-16) tied up at Chinnampo, North Korea, November 1950, 'after taking part in clearing a channel more that sixty miles from out in the Yellow Sea and up the Taedong River to that city,' with sweep gear - depressors, otters, floats, cable reels - visible (Official U.S. Navy Photograph, collections of the National Archives); 80-G-430072 - USS Gull (AMS-16) sweeping for mines during a commando raid by British Royal Marines at Chinnampo, North Korea, 15 June 1951, 'intended to cut rail and other enemy supply lines,' lookout watching for mines off Gull's bow (Official U.S. Navy Photograph, National Archives); NH 68589 - USS LST-735 (Dukes County) serving as mother ship for seven minesweepers including Gull, probably in a Japanese port, c. 1952-54 (USNI James C. Fahey Collection, NHC). Page text: 'a 270-ton auxiliary motor minesweeper ... built at Terminal Island, California. Commissioned in February 1944, she served in the Pacific during World War II, taking part in the Peleliu and Okinawa invasions. In February 1947, she was redesignated a motor minesweeper (AMS) and renamed Gull (AMS-16) ... During the Korean War, she was very active sweeping mines in the combat zone ... In mid-1954 Gull began conversion to a coastal minehunter ... decommissioned in January 1958. USS Gull was disposed of in March 1959.'

   Verification

   verified

   Role

   supporting

   Documentation level

   ship_specific

   Accessed

   2026-10-04

   Study period

   1944-1955 (photograph dates)

   Population

   Crew during documented operations (1944-1954)

   Limitations

   Official photograph captions and a summary service paragraph - documents presence and operations (Chinnampo mine clearance Nov 1950, the June 1951 commando-raid sweep, mother-ship nesting c. 1952-54), not materials or asbestos content. A sweep-gear inventory (depressors, otters, floats, cable reels) is equipment, not ACM evidence. Photo-catalog text is a mirror of the NHC Online Library page; the corresponding NHHC catalog URL for 80-G-430072 returned 404 on 2026-10-04, so the NHC-via-ibiblio mirror is cited.

   Atlas source

   true

   Evidence ID

   ev-uss-yms-324-yms324-03

5. [5]National Archives, Special List #44, by Ship Numbers, PDF (live source verified 2026-10-04; entry read from extracted table text via pdftotext -layout) [other_primary]

   Locator

   Special List #44, by Ship Numbers, YMS-324 entry: PDF p. 118 (table row 'YMS-324 2/28/1944 6/30/1945')

   Finding type

   historical_record

   Finding

   NARA's Special List #44 lists YMS-324 with Navy deck-log coverage from 28 February 1944 through 30 June 1945.

   Verification

   verified

   Role

   supporting

   Documentation level

   ship_specific

   Accessed

   2026-10-04

   Study period

   1944-02-28 to 1945-06-30 (indexed coverage)

   Population

   Crew 1944-1945 (indexed log window)

   Limitations

   This is an archival custody/index entry and establishes log coverage only; it does not by itself establish commissioning or decommissioning dates, operations on particular days, asbestos content, crew exposure, or legal eligibility. The coverage window opens on the documented commissioning day (28 February 1944) - so the commissioned career's wartime span is indexed - and ends 30 June 1945, inside the Okinawa operations period; the post-surrender return and all post-1945 service fall outside the indexed span. The underlying logs were not examined.

   Atlas source

   true

   Evidence ID

   ev-uss-yms-324-yms324-04

6. [6]Shipbuilding History (Tim Colton compilation), 'Al Larson Boat Shop' yard table - YMS 324 row + yard history header (live source verified 2026-10-04) [other_primary]

   Locator

   larson.htm - 'Al Larson Boat Shop, Terminal Island CA' table, YMS 324 row + yard history header

   Finding type

   vessel_history

   Finding

   The yard table lists this hull as 'YMS 324 | US Navy | Minesweeper | 320 [tons] | 136 [ft] | 28-Feb-44 | Later Gull (AMS 16) 1947, struck 1959.' The yard history header records that Al Larson Boat Shop was established in 1903 by Peter Adolph (Al) Larson, a Swedish immigrant, and has been building and repairing boats on Terminal Island ever since (compiler's most recent update 26 September 2018).

   Verification

   verified

   Role

   supporting

   Documentation level

   ship_specific

   Accessed

   2026-10-04

   Study period

   1943-1959

   Population

   Al Larson Boat Shop construction trades (1943-44)

   Limitations

   Compiler's yard table, secondary - consistent with DANFS/NavSource on builder, location, and delivery/commissioning date (28-Feb-44), and on the 1947 Gull (AMS-16) reclassification. Its tonnage (320) conflicts with DANFS/NavSource 270 t and secondary compilations' 380 t full-load - carried in gaps. 'Struck 1959' agrees with the Naval Register striking month. No asbestos content.

   Atlas source

   true

   Evidence ID

   ev-uss-yms-324-yms324-05

7. [7]NavalCoverMuseum wiki, 'GULL MHC 46' page (live source verified 2026-10-04; designation milestone list, cover index, postmark record, awards note, namesake) [other_primary]

   Locator

   navalcovermuseum.org/wiki/GULL_MHC_46 - Names and Designations chronological list; Postmarks table (Locy Type 7, Branch Sasebo, 1951-01-19); Other Information awards note

   Finding type

   vessel_history

   Finding

   NavalCoverMuseum's milestone list for this hull: 'Keel Laid June 3 1943 - Launched October 14 1943; USS YMS-324 Commissioned February 28 1944; USS GULL AMS-16 Redesignated Motor Minesweeper (AMS) February 17 1947 and named; USS GULL AMCU-46 Reclassified Coastal Minesweeper (Underwater Locator) (AMCU) August 1 1954; USS GULL MHC-46 Reclassified Coastal Minehunter (MHC) February 7 1955; Decommisioned January 14 1958; Struck from Naval Register March 1959; Fate unknown.' Postal record: a cover exists for 1949, and a Locy Type 7 postmark '17000 Branch Sasebo, Japan' dated 19 January 1951 was in use 'As AMS-16' - philatelic documentation of the ship's Sasebo, Japan presence during Korean War operations. Awards note: 'GULL was awarded two battle stars for World War II service and nine battle stars and the Navy Unit Commendation for Korean service.' Namesake: 'a long-winged, usually white, web-footed swimming bird having the lower mandible hooked.'

   Verification

   verified

   Role

   supporting

   Documentation level

   ship_specific

   Accessed

   2026-10-04

   Study period

   1943-1959

   Population

   Crew 1944-1958; postal facility users

   Limitations

   Corroborating milestone compilation that shares NavSource's data community - not a fully independent authority; its 17 February 1947 naming date may share NavSource's source rather than confirm it separately (the 17-vs-18 February conflict stays open). The postmark establishes postal-facility use at Sasebo as AMS-16 in January 1951. Contains no asbestos information.

   Atlas source

   true

   Evidence ID

   ev-uss-yms-324-yms324-06

8. [8]uboat.net Allied Warships of WWII, 'USS YMS-324 (YMS-324)' - Minesweeper of the YMS class (live source verified 2026-10-04) [other_primary]

   Locator

   uboat.net/allies/warships/ship/9743.html - identity block and History lines

   Finding type

   vessel_history

   Finding

   uboat.net compiled record for this hull: 'Built by Al Larson Boat Shop Inc. (Terminal Island, California, U.S.A.); Ordered 11 Apr 1942; Laid down 3 Jun 1943; Launched 14 Oct 1943; Commissioned 28 Feb 1944; End service 14 Jan 1958. History: Named Gull and redesignated motor minesweeper AMS-16 on 17 February 1947; Converted to coastal minesweeper (underwater locator) and reclassified AMCU-46 on 1 August 1954; Reclassified coastal minehunter MHC-46 on 7 February 1955; Decommisioned on 14 January 1958; Stricne in March 1959 [sic].'

   Verification

   verified

   Role

   supporting

   Documentation level

   ship_specific

   Accessed

   2026-10-04

   Study period

   1942-1959

   Limitations

   Secondary compilation consistent with NavSource on the 17 February 1947 naming date and the 14 January 1958 end-of-service; adds the order date (11 April 1942), not corroborated elsewhere. Contains no asbestos content.

   Atlas source

   true

   Evidence ID

   ev-uss-yms-324-yms324-07

9. [9]Milestone/specification cross-check: DANFS 'Gull II' narrative and spec block vs NavSource 11/05016 milestone list and spec block vs NavalCoverMuseum milestone list vs uboat.net ship/9743 vs Colton larson.htm YMS 324 row [other_primary]

   Locator

   DANFS narrative and spec block; NavSource 11/05016.htm milestone list and spec block; NCM GULL_MHC_46 milestone list; uboat.net ship/9743; Colton larson.htm YMS 324 row and minesweepers3.htm AMS 16 / AMCU 46 rows (http://www.shipbuildinghistory.com/smallships/minesweepers3.htm, live 2026-10-04)

   Finding type

   vessel_history

   Finding

   CONFLICTS documented, not reconciled: (a) AMS-16 naming/redesignation date - DANFS prints 'Redesignated Gull (AMS-16) 18 February 1947'; NavSource prints 17 February 1947, NavalCoverMuseum prints 'February 17 1947,' and uboat.net prints 'on 17 February 1947.' Three compiled sources against DANFS; the field carries 'February 1947 (17 vs 18)' with the conflict flagged. (b) Complement - DANFS spec block 34 vs NavSource 32. (c) Displacement - DANFS and the NHC photo page print 270 t; secondary compilations print 380 t full load; and the compiler Colton is internally inconsistent - his larson.htm yard table prints 320 while his minesweepers3.htm AMS/AMCU tables print 270. (d) Speed - DANFS 14 k vs NavSource 15 kts. (e) Beam - DANFS 25' vs NavSource 24'6". (f) First commanding officer - DANFS 'Lt. B. F. Silviera' vs NavSource 'LT Haven B. F. Silveira' (spelling variant). (g) End of life - DANFS 'disposed of in March 1959'; NavSource/NCM 'struck March 1959, fate unknown'; Colton 'disposed of 1959 / struck 1959' - disposal method undocumented.

   Verification

   partial

   Role

   correction

   Documentation level

   ship_specific

   Accessed

   2026-10-04

   Study period

   1943-1959 (milestone window)

   Limitations

   Source-discrepancy record, not a materials claim. NavSource, NavalCoverMuseum, and uboat.net share a data community and may not be independent confirmations of 17 February against DANFS's 18 February - no primary registry page resolves it here. No asbestos content.

   Atlas source

   true

   Evidence ID

   ev-uss-yms-324-yms324-08

10. [10]U.S. Naval Institute Proceedings 74/1/539 (January 1948), 'Saga of a YMS' by Hobart Hughes - first-person account of YMS-class machinery and habitability by a YMS-238 officer (full text retrieved 2026-10-04 via firecrawl; direct curl returns 403) [other_primary]

    Locator

    Proceedings 74/1 (Jan 1948), p.539 - 'power plant' and auxiliary-equipment passages

    Finding type

    asbestos_application

    Finding

    YMS-class machinery fit documented by a serving officer: wooden hull ('a wooden one at that'); 'two General Motors Diesels for main propulsion which were electro-pneumatically controlled from the bridge'; 'a similar Diesel direct-connected to a generator for magnetic minesweeping'; 'two Hercules 30-KW Diesels furnished electric power for the galley, for ventilating, and for other auxiliary equipment.' No boilers and no steam distribution - the plant type that carried the era's dominant asbestos application (thermal insulation of boilers and steam piping) is absent from this class, including this hull, whose documented plant is the same two-GM-diesel fit (ev-02).

    Verification

    inferred

    Role

    supporting

    Documentation level

    class_or_era

    Accessed

    2026-10-04

    Study period

    1942-1945 (class construction era)

    Population

    YMS-class construction trades; crews (1942-1945 build window)

    Limitations

    Class/era inference, not a hull record: describes sister ship YMS-238 and the type generally; never mentions asbestos. The conclusion that this hull lacked steam-plant insulation is structural inference from the documented plant; it does not establish presence or absence of residual ACM (exhaust lagging, gaskets, clutch facings, cable insulation, deck coverings, insulation board) aboard YMS-324.

    Atlas source

    true

    Evidence ID

    ev-uss-yms-324-yms324-09

11. [11]GAO, Navy Efforts To Protect Workers From Asbestos Exposure, HRD-80-2 (18 October 1979) [gao]

    Locator

    GAO product page HRD-80-2; full page retrieval blocked HTTP 403

    Finding type

    gov_survey

    Finding

    The GAO product description states that the Navy used asbestos insulation extensively aboard ships and did not begin substituting alternative insulation materials until the early 1970s, providing Navy-wide era context that includes this hull's 1943-44 construction and 1944-1958 service life.

    Verification

    partial

    Role

    context

    Documentation level

    class_or_era

    Accessed

    2026-10-04

    Study period

    1979

    Population

    Navy shipyard workers; asbestos program review

    Limitations

    Program-level context only, not a hull-specific finding. The GAO page returned HTTP 403 to direct retrieval on 2026-10-04 (standing defect since Batch 01); the product-page description was available through indexed search. It does not establish any material aboard this hull, quantity, remaining material, exposure, or legal eligibility.

    Atlas source

    true

    Evidence ID

    ev-uss-yms-324-yms324-10

12. [12]National Archives, Researching Asbestos aboard US Naval Vessel up through 1961 (live source verified 2026-10-04) [other_primary]

    Locator

    NARA guided-topic page, archival-series discussion for ship-specific asbestos research

    Finding type

    regulatory

    Finding

    NARA's research guide identifies RG 19 Bureau of Ships correspondence, ship/general information books, specifications, engineering drawings, and related Navy records as the archival pathway for determining asbestos in Navy vessels built or operated through 1961 - covering this hull's entire 1943-1959 record.

    Verification

    verified

    Role

    archival_lead

    Documentation level

    context_only

    Accessed

    2026-10-04

    Study period

    1941-1961 (guide scope)

    Limitations

    This is a research pathway, not a YMS-324 material record. The cited guide does not establish that asbestos was installed aboard this hull, remained aboard, was disturbed, or exposed any person. The identified RG 19 records were not examined in this batch.

    Atlas source

    true

    Evidence ID

    ev-uss-yms-324-yms324-11

13. [13]Batch-8953 search ledger (this record): live NHHC DANFS 'Gull II'; NavSource 11/05016 live; NHC Online Library via ibiblio live; NARA SL-44 PDF direct extraction; Colton larson.htm live; uboat.net ship/9743 live; NavalCoverMuseum live; NARA asbestos guide live; GAO (blocked); NVR (no record); CourtListener (see ledger rows); secondary web sweep [other_primary]

    Locator

    search_ledger rows sl-uss-yms-324-yms324-01 through -19

    Finding type

    historical_record

    Finding

    No qualifying ship-specific asbestos record located: no asbestos survey, abatement contract, hazmat disclosure, product identification, or primary material record naming YMS-324, Gull, AMS-16, AMCU-46, or MHC-46 was found in the public sources searched (see search_ledger). All four CourtListener base queries returned zero hits: 'USS Gull' opinion (count 0) and docket (count 0, document_count 0); 'YMS-324' opinion (count 0) and docket (count 0, document_count 0). Asbestos-qualified variants were not run because every base query returned a zero count - a zero base means a zero variant per batch rules. No name-collision hits required classification: 'USS Gull' produced zero results entirely, so the distinct Gull I (AM-74) hull never entered the litigation surface. An indexed web sweep surfaced only law-firm minesweeper listicles (mesothelioma.com names 'USS Gull AM-74' - the OTHER hull; mesotheliomahelp.org lists 'USS Gull' generically) - excluded under source policy; and a va.gov BVA indexed search surfaced only unrelated appeals - no decision names this hull.

    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 - era materials in a 1943-44 diesel minesweeper would still be consistent with class inference, and the hull's post-1959 fate is unknown (the hull may or may not survive to be surveyed). CourtListener coverage is not exhaustive for unreported or settled matters; undocketed litigation naming this hull could exist. Does not establish or defeat any claim of exposure or legal eligibility.

    Atlas source

    true

    Evidence ID

    ev-uss-yms-324-yms324-12

14. [14]Archival leads (not yet retrieved): NARA Special List #44 indexed deck logs for YMS-324 (28 Feb 1944 - 30 Jun 1945, RG 24 series); NARA-held photographs 80-G-423775 and 80-G-430072 (Chinnampo mine-clearance Nov 1950 and Jun 1951); RG 19 Bureau of Ships files for the YMS-1 type and the Al Larson contract; Ship Repair Facility Yokosuka 1954-55 AMCU conversion work orders [other_primary]

    Locator

    NARA SL-44 (p.118); NARA photos 80-G-423775 / 80-G-430072; RG 19 design files; SRF Yokosuka conversion record (per NavSource milestone list)

    Finding type

    historical_record

    Finding

    Archival leads where a hull-level material or exposure record would live: the indexed deck logs for the wartime period (Peleliu, Ngulu, Ulithi, Okinawa operations) would document availabilities, yard periods, and any material-disturbing evolutions; the NARA-held 80-G photographs document the hull's physical state during Korean service; RG 19 Bureau of Ships files for the YMS-1 type and the Al Larson contract are the design/construction pathway; the 1954-55 AMCU-46 conversion at Ship Repair Facility Yokosuka is the most material-intensive documented yard period (conversion began 1 August 1954, completed 31 January 1955) and any work orders or industrial records for it would be the strongest candidate hull-level material record.

    Verification

    unverified

    Role

    archival_lead

    Documentation level

    ship_specific

    Accessed

    2026-10-04

    Study period

    1944-1955 (lead windows)

    Limitations

    Leads only - existence of these record classes follows standard NARA/agency practice for the period, but no hull-level material document was located, retrieved, or verified; the underlying deck logs were not examined, and deck logs are chronological event records that would not themselves identify asbestos content. The Yokosuka conversion is documented as an event; its material scope is not public.

    Atlas source

    true

    Evidence ID

    ev-uss-yms-324-yms324-13