Evidence
11 evidence entries recorded; each entry has a stable permalink (#ev-1 … #ev-11).
-
[1]NavSource Online: Mine Warfare Vessel Photo Archive, file 11/03148 - 'YP-386 ex-AMc-148' vessel page (J. M. Radigan/D. Wright compilation) [other_primary]
- Locator
- NavSource Mine Warfare Vessel Photo Archive, AMc-148/YP-386 page (milestones list + specifications block)
- Finding type
- vessel_history
- Finding
- Per-hull record for AMc-148 / YP-386: 'Built in 1940 at J. M. Martinac Shipbuilding, Tacoma, WA. Acquired by the Navy in 1942 and designated as a Coastal Minesweeper, AMc-148. Reclassified as a District Patrol Craft, YP-386 in May 1942 and placed in service. Transferred to the War Shipping Administration in February 1945. Fate unknown.' Specifications: displacement 69 t.; length 75'; beam 23'; speed 9 kts.; propulsion one diesel engine, one shaft. Call sign Nan-Yoke-Zebra-Able. NavSource states 'There is no DANFS history currently available for YP-386' and holds no image of the craft.
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Accessed
- 2026-09-22
- Study period
- 1940-1945
- Population
- Navy crew of a ~69-81 ton district patrol craft (1942-1945)
- Limitations
- Secondary compilation (the standard per-hull reference for small Navy craft), not a primary document - consistent with the shipbuildinghistory/Martinac yard-table data. Names no conversion yard, no complement, no wartime stations, and no commercial or fishing-vessel identity; contains no materials or asbestos information. 'Acquired by the Navy in 1942' does not resolve whether she was a requisitioned commercial vessel or a Navy-contract build delivered late - the Martinac delivery table reads the other way (US Navy as original owner).
- Atlas source
- true
- Evidence ID
- ev-uss-amc-148-amc148-01
-
[2]shipbuildinghistory.com (Colton), 'Patrol and Training Craft (YP)' table, row YP 386; 'Coastal Minesweepers (AMc) Built or Acquired through WWII' table note 'AMc 143-148 - Redesignated YP 381-386'; J. M. Martinac Shipbuilding delivery table, AMc-148 row [other_primary]
- Locator
- shipbuildinghistory 'Patrol and Training Craft (YP)' table (navalmarinearchive.com mirror), 'YP 386' row; 'Coastal Minesweepers (AMc)' table, 'AMc 143-148' group row; shipbuildinghistory.com/shipyards/small/martinac.htm, 'AMc 148' delivery row
- Finding type
- vessel_history
- Finding
- Independent per-hull table rows: YP-386 - Martinac, Tacoma WA, 75 ft, 69 t, built 1936, 'Ex-AMc 148, YP 1942, to MARAD 1945'; and the Martinac yard delivery table - 'AMc 148 | US Navy | Minesweeper | 71d | 81 | 1940 | Reclassified 1942 as YP 386, to NDRF 1945'. Program context from the same compiled tables: the Navy converted acquired fishing vessels into coastal minesweepers (AMc) during WWII alongside purpose-built wooden hulls, and the YP fleet grew to about 650 craft, mostly acquired yachts and fishing vessels. AMc hulls 143-148 were redesignated YP-381 through YP-386 as a block.
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Accessed
- 2026-09-22
- Study period
- 1940-1945
- Population
- Navy crews of converted/small patrol craft (program context)
- Limitations
- Shipyard-history compilation, secondary but corroborating NavSource on builder and timeline independently; the two tables inside this same dataset conflict on build year (1936 in the YP table vs 1940 in the Martinac delivery table - carried in the correction row) and on provenance ('US Navy' original owner vs NavSource 'acquired 1942'). Dimensions likewise vary (75 ft/69 t vs 71 ft/81 GT). No wartime station detail, no crew figures, no asbestos information. Program-level counts are context, not hull evidence.
- Atlas source
- true
- Evidence ID
- ev-uss-amc-148-amc148-02
-
[3]NARA, Special List #44 (by ship number), index to U.S. Navy deck logs 1801-1947 held in the National Archives - 'YP-386 7/30/1942 6/30/1944' entry [other_primary]
- Locator
- sl-44-ship-number.pdf (pdftotext -layout verified), 'YP-386 7/30/1942 6/30/1944' row; digitized-logs listing at archives.gov/research/military/logbooks/navy-online (no YP-386 entry)
- Finding type
- historical_record
- Finding
- Special List #44 indexes this hull's deck logs in the National Archives deck-log collection (RG 24) under her later designation: 'YP-386, 7/30/1942 - 6/30/1944' - one file unit covering the first ~23 months of district-patrol-craft service. There is NO 'AMC-148'/'AMc-148' entry in the index: logs for the AMc-designation phase (early 1942 - May 1942) are not indexed, and the final months of service (July 1944 - February 1945, through the WSA transfer) are likewise unindexed. The NARA 'Navy Deck Logs Available in the National Archives Catalog' page lists no YP-386 among digitized logs (only unrelated YP-629 among YP-designated craft) - the logs exist as physical holdings, undigitized.
- Verification
- verified
- Role
- archival_lead
- Documentation level
- ship_specific
- Accessed
- 2026-09-22
- Study period
- 1942-1944 (indexed coverage)
- Limitations
- Index-level finding only - the logs were not retrieved (no paid reproduction authorized) and their contents, including stations, operations, repairs, and any material events, are unknown. SL-44 indexes physical holdings, not digitization status. This is the 'WWII deck logs establish service' reference in the batch task - it establishes the log series' existence under YP-386 for Jul 1942-Jun 1944, nothing more. Nothing in this row is an asbestos finding.
- Atlas source
- true
- Evidence ID
- ev-uss-amc-148-amc148-03
-
[4]HyperWar 'Ships of the U.S. Navy, 1940-1945' (ibiblio transcription), Minecraft - AMc Coastal Minesweepers tables (Converted Vessel Class and Accentor/Acme Class blocks); AMc-148 absent from both [other_primary]
- Locator
- ships-dm.html, 'AMc -- Coastal Minesweepers' section - Converted Vessel Class spec block and unit table (no AMc-143-148 rows present; AMc-149 Nightingale present)
- Finding type
- vessel_history
- Finding
- The Navy register-derived AMc tables do not carry an AMc-148 row at all - the unnamed AMc-143-148 craft are absent from the table entirely, while named converted vessels (through AMc-149 Nightingale) and the standardized Accentor/Acme family are listed hull by hull. The table's 'Converted Vessel Class' block characterizes the requisitioned-fishing-vessel AMc type at 165-270 tons, 76'7"-136' - this hull's documented figures (69-81 t, 71-75 ft) sit BELOW that class envelope, and whether she was a requisitioned fisherman or a small Navy-contract build is unresolved in all compiled sources checked.
- Verification
- verified
- Role
- context
- Documentation level
- class_or_era
- Accessed
- 2026-09-22
- Study period
- 1941-1945
- Population
- Crews of the converted-vessel coastal minesweeper type (class context)
- Limitations
- Secondary compilation of official Navy register data; documents the absence of this hull from the register table rather than any positive classification. Her design provenance (requisitioned fishing vessel vs Navy-contract small minesweeper) cannot be asserted from the sources found - carried in gaps. No asbestos or materials information.
- Atlas source
- true
- Evidence ID
- ev-uss-amc-148-amc148-04
-
[5]Design-bounded assessment compiled from NavSource and shipbuildinghistory/Martinac specifications for this hull (ev-01, ev-02) and the documented AMc/YP program pattern (ev-04) [other_primary]
- Locator
- navsource.net/archives/11/03148.htm specifications block; navalmarinearchive.com/sbh/smallships/yp.html 'YP 386' row; shipbuildinghistory.com/shipyards/small/martinac.htm 'AMc 148' row
- Finding type
- asbestos_application
- Finding
- Design-level assessment of the asbestos-relevant profile: this craft carried a single diesel engine on one shaft in a ~69-81 ton wooden-type hull - no boilers, no steam distribution system, no turbines. The principal asbestos vectors documented aboard steam-era naval vessels - boiler and steam-drum lagging, steam-line insulation, turbine and condenser insulation - are absent by design in this type. Residual era-typical applications remain plausible but are undocumented for this hull: diesel exhaust and muffler insulation, engine gaskets and packing, electrical insulation, joiner materials, and brake linings on winch/windlass gear. Whether her construction followed commercial-fishing practice or a naval contract (which would bear on insulation specification) is unresolved.
- Verification
- inferred
- Role
- supporting
- Documentation level
- class_or_era
- Accessed
- 2026-09-22
- Study period
- 1940-1945
- Population
- Ship's company (unverified, ~15-25 by type); construction trades at Martinac, 1940; conversion-yard workforce (unlocated)
- Limitations
- Class/design inference, not a ship-specific finding: the absence of a steam plant removes the dominant asbestos vectors but does not prove the absence of asbestos aboard - WWII-era gaskets, packing, electrical components, and interior materials could still contain asbestos, and whatever conversion/outfitting the Navy added is undocumented. Nothing in the cited sources names an asbestos product installed on this hull. Does not establish presence, absence, exposure, or causation for any individual.
- Atlas source
- true
- Evidence ID
- ev-uss-amc-148-amc148-05
-
[6]Corn, Jacqueline Karnell, and Jennifer Starr, 'Historical perspective on asbestos: Policies and protective measures in World War II shipbuilding,' American Journal of Industrial Medicine 11(3):359-373 (1987) [other_primary]
- Locator
- Abstract and article, AJIM 11(3):359-373
- Finding type
- asbestos_application
- Finding
- Peer-reviewed historical study documents that asbestos was used extensively as a fireproofing and insulating material in U.S. shipbuilding during WWII - the era under which this small diesel craft was built (1940 per two of three compiled sources) and converted for Navy use in 1942 - and that wartime demand drove unprecedented asbestos utilization in ship construction.
- Verification
- verified
- Role
- context
- Documentation level
- class_or_era
- Accessed
- 2026-09-22
- Study period
- 1940s era documented; article 1987
- Population
- WWII shipyard workers and ship crews (era context)
- Limitations
- Program/era-level scholarly documentation of asbestos use in WWII shipbuilding generally; does not name this vessel, its class, or any Tacoma yard and does not establish that asbestos was or remains aboard this hull, nor quantity, location, condition, exposure, or causation. Its ship-construction framing applies with reduced force if this hull was a commercial fishing-vessel build, and applies most strongly to the construction trades at the builder's yard rather than to the crew.
- Atlas source
- true
- Evidence ID
- ev-uss-amc-148-amc148-06
-
[7]U.S. Navy at War, 1941-1945 - Official Reports to the Secretary of the Navy by Fleet Admiral Ernest J. King, Appendix C (combat-loss list): 'YP 383 | 8 22 N, 79 29 W | 24 November 1944'; program context per NavSource sibling pages [other_primary]
- Locator
- ibiblio.org/hyperwar USNatWar Appendix C loss table 'YP 383' row; navsource.net/archives/11/03145.htm (YP-383 page); navsource.net/archives/11/03143.htm (YP-381, 12th ND/USCG)
- Finding type
- vessel_history
- Finding
- Group operating context for the AMc-143-148/YP-381-386 block: the official CNO loss report lists sister craft YP-383 (ex-AMc-145, built Tacoma 1940 like this hull) sunk in collision with USS LCI(L)-873 in the Gulf of Panama on 24 November 1944 - placing at least part of this craft group on Panama/15th Naval District service. Sibling YP-381 (ex-AMc-143, the ex-fishing boat St. James) served the 12th Naval District (Mare Island) then transferred to the Coast Guard - so the group was dispersed across districts and YP-386's own station is undocumented.
- Verification
- verified
- Role
- context
- Documentation level
- context_only
- Accessed
- 2026-09-22
- Study period
- 1942-1945
- Population
- Crews of the YP-381-386 craft group (district patrol context)
- Limitations
- Context for the plausible operating area only - the official loss entry documents YP-383, not this hull. YP-386's assignment is not named in any located source; her deck logs (Jul 1942-Jun 1944, NARA RG 24, unretrieved) are the primary that would establish it. No asbestos information in any of these records.
- Atlas source
- true
- Evidence ID
- ev-uss-amc-148-amc148-07
-
[8]Arnold v. Saberhagen Holdings, Inc., 157 Wn. App. 649, 240 P.3d 162 (Wash. Ct. App. 2010), review denied, 171 Wn.2d 1012, 249 P.3d 1029 (2011), No. 39055-8-II - published opinion; J.M. Martinac Shipbuilding Corporation appears in the caption among ~30 named defendants [court_record]
- Locator
- Opinion caption (defendant list) and paras. 1, 6 (complaint scope); no other Martinac references in the opinion body
- Finding type
- litigation_documented
- Finding
- The builder's yard is a documented asbestos-litigation defendant at the pleading stage: the Arnolds' 2008 Pierce County Superior Court complaint (filed 4 August 2008) asserted asbestos-related claims 'against Lockheed and about 30 other companies' including J.M. Martinac Shipbuilding Corporation, arising from Reuben Arnold's insulation work at Lockheed's Seattle shipyard and other sites (take-home and primary exposure claims). The published Division II opinion resolves ONLY Lockheed Shipbuilding's summary judgment (affirmed as to Daniel's primary exposure claim; reversed as to the take-home and remaining claims) - Martinac is in the caption but is not discussed anywhere in the opinion body, and its individual disposition is not addressed.
- Verification
- verified
- Role
- context
- Documentation level
- context_only
- Accessed
- 2026-09-22
- Study period
- 2008-2010 litigation; alleged exposure period 1960s-1980s
- Population
- Builder-yard and Tacoma-area shipyard/insulation workers (litigation context)
- Limitations
- Pleading-stage naming of the builder only - classified down per litigation-stage discipline. The opinion contains no finding that Martinac exposed Reuben or Daniel Arnold to asbestos, no findings about Martinac's premises or products, and nothing about this vessel or the AMc/YP program. Being named in a multi-defendant asbestos complaint is an allegation, not a merits record; Martinac's own disposition in the case is not established by this source. Establishes only that the builder's yard was sued in asbestos litigation - not that asbestos was installed on this hull.
- Atlas source
- true
- Evidence ID
- ev-uss-amc-148-amc148-08
-
[9]Source-conflict and coverage reconciliation across NavSource, shipbuildinghistory tables, HyperWar register tables, NARA SL-44, and NHHC/DANFS availability checks [other_primary]
- Locator
- navsource.net/archives/11/03148.htm and sibling pages 03143-03147; navalmarinearchive.com/sbh/smallships/yp.html and minesweepers2.html; shipbuildinghistory.com/shipyards/small/martinac.htm; ibiblio.org/hyperwar ships-dm.html; sl-44-ship-number.pdf; history.navy.mil candidate URLs (404)
- Finding type
- historical_record
- Finding
- Publication-level discrepancies reconciled or logged: (a) Build year - NavSource and the Martinac delivery table say 1940; the shipbuildinghistory YP table says 1936; unresolved, 1940 carried (two of three sources). (b) Dimensions - NavSource gives 75 ft / 69 t; the YP table gives 75 ft / 69 t; the Martinac delivery table gives 71 ft / 81 GT; measure-type variance (registered vs overall, gross tons vs displacement) plausible but unresolved. (c) Provenance - the Martinac delivery table reads 'US Navy' original owner / 'Minesweeper' type (Navy-contract build), while NavSource reads 'acquired by the Navy in 1942' and NARA SL-44 annotates sister YP-385 '(Pacific Star)' - a commercial-name trace inside the group; unresolved whether AMc-148 was Navy-contract or requisitioned commercial. (d) Name status - the craft was never named: 'AMc-148' and 'YP-386' are hull designations; consistent with this, NavSource flags 'no DANFS history currently available,' candidate NHHC URLs 404. (e) Register coverage - AMc-148 is absent from the Navy register-derived AMc table (unnamed hulls not itemized). (f) Deck-log indexing - SL-44 indexes logs only under 'YP-386' (Jul 1942-Jun 1944); the AMc-148 phase has no indexed logs, and Jul 1944-Feb 1945 (through the WSA transfer) is unindexed - the task's 'WWII deck logs establish service' maps to the YP-386 series only.
- Verification
- verified
- Role
- correction
- Documentation level
- ship_specific
- Accessed
- 2026-09-22
- Study period
- 1940-1945 records
- Limitations
- Documents publication-level discrepancies so the record is auditable; does not alter identity or the service timeline. None of the conflicting figures bear on asbestos documentation; the provenance question does bound whether naval insulation specifications could have applied, and is flagged as unresolved rather than assumed.
- Atlas source
- true
- Evidence ID
- ev-uss-amc-148-amc148-09
-
[10]Batch-1494 search ledger (this record): NavSource 11/03148 and sibling pages; shipbuildinghistory YP/minesweeper/Martinac-yard tables; HyperWar Navy register tables; NARA SL-44 + digitized-logs page + Catalog API; NHHC DANFS candidate URLs; NVR; Wikipedia compiled lists; WA appellate opinion text; general web asbestos queries [other_primary]
- Locator
- search_ledger rows sl-uss-amc-148-amc148-01 through sl-uss-amc-148-amc148-14
- Finding type
- historical_record
- Finding
- No qualifying ship-specific asbestos record located: no asbestos survey, abatement contract, hazmat disclosure, or verified docketed case naming AMc-148 or YP-386 was found in the public sources searched (see search_ledger). The vessel does not appear in the Naval Vessel Register (NVR excludes vessels disposed of before 1987). As an unnamed hull, the craft does not appear on law-firm/marketing asbestos ship lists at all - those lists key on ship names. The only litigation material located is the builder-yard naming in Arnold v. Saberhagen (ev-08), which is not a vessel finding. The CourtListener API check could not be executed - authenticated daily quota (2800/day) exhausted at research time - so the litigation surface is incompletely searched.
- Verification
- verified
- Role
- negative_finding
- Documentation level
- ship_specific
- Accessed
- 2026-09-22
- Study period
- 2026-09-22
- Limitations
- Absence of a located public record does not prove absence of asbestos aboard - WWII-era construction and conversion practices leave residual uncertainty for gaskets, packing, electrical and engine-adjacent insulation even in a small wooden diesel craft. The litigation check is incomplete because CourtListener was throttled (2800/day shared quota exhausted); re-run is a documented gap. Does not establish presence, absence, exposure, causation, or legal eligibility.
- Atlas source
- true
- Evidence ID
- ev-uss-amc-148-amc148-10
-
[11]NARA Guide to Federal Records: RG 24 (Bureau of Naval Personnel - deck logs), RG 38 (Chief of Naval Operations - WWII war diaries), RG 19 (Bureau of Ships), RG 248 (War Shipping Administration); NARA SL-44 deck-log index for this hull [other_primary]
- Locator
- https://www.archives.gov/research/guide-fed-records/groups/024.html ; /groups/038.html ; /groups/019.html ; /groups/248.html ; sl-44-ship-number.pdf 'YP-386' row
- Finding type
- historical_record
- Finding
- Archival leads (not retrieved - requires research-room or reproduction order; no spend authorized): Navy deck logs for YP-386 covering 7/30/1942-6/30/1944 (SL-44 indexed, RG 24 - the likeliest primary for stations, operations, repairs, and material events during district patrol service); WWII war diaries of the relevant naval district (RG 38 - the sibling-loss datum places the group partly in Panama waters, pointing to the 15th Naval District/Balboa command series as a candidate); BuShips acquisition/conversion records for AMc-143-148 small craft (RG 19 - could hold the requisition-vs-contract resolution and conversion materials specs); the War Shipping Administration disposal file for the February 1945 transfer (RG 248 - the likeliest custody document and the best lead for post-Navy ownership); and U.S. Coast Guard merchant-vessel documentation files for any post-1945 commercial identity (official number unlocated).
- Verification
- unverified
- Role
- archival_lead
- Documentation level
- context_only
- Accessed
- 2026-09-22
- Study period
- 1940-1945 records
- Limitations
- Record-group mapping only - no box-level retrieval performed; existence of asbestos-specific documents for this hull is unknown until surveyed in person. The district assignment (and therefore which RG 38 series applies) is itself unverified. Nothing in this row is an asbestos finding.
- Atlas source
- true
- Evidence ID
- ev-uss-amc-148-amc148-11