Evidence
6 evidence entries recorded; each entry has a stable permalink (#ev-1 … #ev-6).
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[1]Dictionary of American Naval Fighting Ships - 'Longspur' (AMc-10) entry; verbatim transcription via Haze Gray & Underway DANFS mirror, Internet Archive Wayback capture 2024-05-26 [nhhc_danfs]
- Locator
- DANFS 'Longspur' entry, stats line + two body paragraphs, full text
- Finding type
- vessel_history
- Finding
- DANFS entry for Longspur (AMc-10), in full: 'The first Longspur (AMc-10) was built by Martinac Shipbuilding Co., Tacoma, Wash., as New Ambassador in 1935; acquired by the Navy 30 October 1940; converted by South Coast Co., Newport Beach, Calif.; and placed in service 11 April 1941. Arriving in the Canal Zone 22 May, Longspur operated in the 15th Naval District for the next 3 years. She performed coastal minesweeping, patrolled the entrance to the Panama Canal, and escorted ships approaching the canal. Returning to San Diego 5 July 1944 Longspur was placed out of service 12 August and delivered to WSA 12 July 1945 for return to her owner.' DANFS stats line: dp. 200; l. 81'2"; b. 21'; dr. 4'8"; s. 10 k.; a. 2 .30 cal. mg.
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Accessed
- 2026-09-22
- Study period
- 1935-1945
- Population
- Construction/conversion trades (Martinac, Tacoma, 1935; South Coast Co., Newport Beach, 1940-41); wartime crew (complement undocumented)
- Limitations
- Authoritative identity/history record naming this hull; contains no asbestos, materials, or insulation information - supports no asbestos claim. Live NHHC DANFS page not located (404 on standard URL patterns 2026-09-22, the standing NHHC link-rot pattern); the hazegray mirror is unreachable live, so the verbatim transcription is cited via its 2024-05-26 Wayback capture. DANFS gives no strike date (NavSource supplies 16 September 1944) and no complement figure.
- Atlas source
- true
- Evidence ID
- ev-uss-longspur-amc10-01
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[2]NavSource Online: Mine Warfare Vessel Photo Archive - Longspur (AMc 10), navsource.org/archives/11/03010.htm [other_primary]
- Locator
- NavSource AMc-10 page - chronology block, specifications block, call-sign lines (page content captured via search-engine index; direct fetch failed 2026-09-22)
- Finding type
- vessel_history
- Finding
- NavSource Mine Warfare Vessel Photo Archive entry for Longspur (AMc 10), grouped under 'Pipit Class Coastal Minesweeper': laid down in 1935 as New Ambassador by the Martinac Shipbuilding Co., Tacoma, WA; acquired by the Navy 30 October 1940; placed in service as USS Longspur (AMc 10) 11 April 1941; placed out of service 12 August 1944; struck from the Navy Register 16 September 1944; transferred to the War Shipping Administration for return to her owner 12 July 1945; registered in 1948 to Roy Lee Deskin of Long Beach, CA as the freighter New Ambassador; 'Fate unknown.' Spec block: displacement 200 t (1948: 126 t); length 81'2" (1948: 74.8'); beam 21' (1948: 21.4'); draft 4'8" (1948: 9.7'); complement 11 (1948); speed 10 kts; armament two .30 cal. machine guns; propulsion one diesel engine, one shaft. Call signs Nan-Item-Nan-William (Navy) and William-Peter-Nan-Dog (New Ambassador, 1948).
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Accessed
- 2026-09-22
- Study period
- 1935-1948
- Limitations
- Volunteer-maintained secondary compilation, not an official record - corroborated against DANFS where they overlap (build, acquisition, in-service, out-of-service, WSA return all agree). Sole source for the strike date (16 Sep 1944), the 1948 Deskin re-registration, engine/drive particulars, and the complement figure - which NavSource itself tags as a 1948 merchant-era number, not a Navy complement. Contains no asbestos or materials information.
- Atlas source
- true
- Evidence ID
- ev-uss-longspur-amc10-02
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[3]HyperWar (ibiblio), 'Ships of the U.S. Navy, 1940-1945 - Minecraft' - AMc Coastal Minesweepers 'Converted Vessel Class' specification block and unit table (compiled from official ship data) [other_primary]
- Locator
- AMc 'Converted Vessel Class' spec block; unit table row 'AMc-10 Longspur'
- Finding type
- vessel_history
- Finding
- HyperWar 'Ships of the U.S. Navy, 1940-1945 - Minecraft' roster lists 'AMc-10 | Longspur | 1941 | ex-New Ambassador (1935)' within the 'Converted Vessel Class' group of AMc coastal minesweepers: displacement 165-270 tons; length 76'7"-136'; diesel engine ~400 h.p.; speed 8.5-14 knots; complement 15-47; armament '1 3"/50, 1 20mm., 2 .30cal. machine guns, or none'; and 'Converted from commercial fishermen (except 203 and 204): mostly draggers and purse seiners, largely tuna clippers from west coast ports.' Documents that this hull belonged to the group of one-off fishing-vessel conversions powered by small diesel plants - no boilers or steam system.
- Verification
- verified
- Role
- context
- Documentation level
- class_or_era
- Accessed
- 2026-09-22
- Study period
- 1940-1945 (service era)
- Population
- Shipyard workers and class crews (class context)
- Limitations
- Class/group-level specification; documents the type's plant, not materials aboard this hull. The absence of a steam plant removes the machinery category most associated with documented WWII-era asbestos insulation but establishes nothing about gaskets, exhaust insulation, electrical insulation, or other possible materials aboard this hull; hull material (wood vs steel) is not stated for this conversion and is unverified.
- Atlas source
- true
- Evidence ID
- ev-uss-longspur-amc10-03
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[4]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
- Era-level inference only: peer-reviewed scholarship documents that asbestos was used extensively as a fireproofing and insulating material in U.S. shipbuilding during WWII - the era in which this fishing vessel was acquired and converted for naval service. Period marine diesel installations and auxiliary machinery commonly used asbestos-containing gaskets, packing, and exhaust-system insulation; aboard an 81-ft diesel fishing-vessel conversion the plausible applications, if any, would be confined to such machinery fittings.
- Verification
- inferred
- Role
- supporting
- Documentation level
- class_or_era
- Accessed
- 2026-09-22
- Study period
- 1935-1945
- Population
- Construction/conversion trades (Tacoma 1935; Newport Beach 1940-41); wartime crew (size undocumented)
- Limitations
- Program/era-level scholarship only - does not name this vessel or the AMc converted-vessel group and does not establish that asbestos was or is aboard this hull, nor quantity, location, condition, individual exposure, or causation. No class- or design-specific material documentation for converted-fishing-vessel minesweepers was located; the diesel plant limits plausible scope relative to steam-driven vessels. The hull is 1935 commercial construction (pre-war), and the Navy conversion scope at South Coast Co. is undocumented.
- Atlas source
- true
- Evidence ID
- ev-uss-longspur-amc10-04
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[5]Batch-1453 search ledger (this record): DANFS/Wayback transcription; NavSource; HyperWar minecraft roster; CourtListener API attempt + web-UI queries; NVR; MARAD ShipHistory; NARA guidance; general web litigation search [other_primary]
- Locator
- search_ledger rows sl-uss-longspur-amc10-01 through sl-uss-longspur-amc10-10
- Finding type
- historical_record
- Finding
- No qualifying ship-specific asbestos record located: no asbestos survey, abatement contract, hazmat disclosure, or docketed asbestos case naming USS Longspur or AMc-10/AMC-10 was found in the public sources searched (see search_ledger; the merchant name 'New Ambassador' was not separately queried). Litigation coverage is partial: the authenticated CourtListener API v4 returned HTTP 429 (2,800/day quota already exhausted at run time; expected availability ~13,147 s) and the search was backed off per batch discipline; the public web UI answered four queries before soft-throttling (HTTP 202 empty) - 'Longspur' returned 4 opinion hits, all name collisions (Longspur L.P., a limited partnership; Longspur Rd., Highland Heights, OH; W. Longspur, Wilmington, DE street address); 'USS Longspur' returned 0; 'AMc-10' returned 13 hits, all token collisions on 'AMC'+'10' (Anchorage Municipal Code ch. 10 liquor-license litigation; American Maritime Cases reporter citations). The 'AMC-10' variant and RECAP/docket (type=r) queries could not complete.
- 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 - and because the CourtListener API was blocked and the web UI throttled mid-sweep, 'no litigation' is a coverage statement over a partially searched surface, not a complete negative. Does not establish presence or absence; does not establish or defeat any exposure claim or legal eligibility.
- Atlas source
- true
- Evidence ID
- ev-uss-longspur-amc10-05
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[6]NARA, 'Logbooks of the US Navy at the National Archives' (archives.gov/research/military/logbooks/navy); NARA Guide to Federal Records, RG 248; USCG MVUS annual series [other_primary]
- Locator
- NARA Navy logbook guidance page (RG 24 Entry 118, Special List #44); archives.gov/research/guide-fed-records/groups/248.html
- Finding type
- historical_record
- Finding
- Archival leads (not retrieved - require research-room or reproduction order; no spend authorized): (a) NARA holds WWII-era U.S. Navy deck logs at College Park (RG 24, Entry 118; Special List #44 indexes logs by ship name and ship number) - if a log series exists for AMc-10 it would document daily operations, repairs, and any material disturbances during 1941-44 Canal Zone service. (b) WSA disposal/transfer records for the 12 July 1945 return-to-owner conveyance would follow RG 248 (Records of the War Shipping Administration). (c) USCG Merchant Vessels of the United States annuals and the vessel's documentation file could verify the 1948 re-registration to Roy Lee Deskin and trace the freighter's later fate.
- Verification
- unverified
- Role
- archival_lead
- Documentation level
- context_only
- Accessed
- 2026-09-22
- Study period
- 1935-1948 records
- Limitations
- Record-group mapping only - no box-level retrieval performed; the existence of an AMc-10 deck-log series or of any asbestos-specific document is unknown until surveyed in person. Nothing in this row is an asbestos finding.
- Atlas source
- true
- Evidence ID
- ev-uss-longspur-amc10-06