Evidence
8 evidence entries recorded; each entry has a stable permalink (#ev-1 … #ev-8).
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[1]research packet 913-packet.md (4 sources cited) [other_primary]
- Finding type
- vessel_history
- Finding
- Identity packet verdict: VERIFIED (thin sourcing
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Limitations
- qualifier: VERIFIED (thin sourcing
- Evidence ID
- uss-alturas-pc602-pkt-913-packet-md
-
[2]DANFS, Alturas (PC-602) - construction, sponsor, commissioning, convoy/frontier service, inactivation, 1956 naming, 1960 striking, 1961 sale (live NHHC page, verified 2026-10-03) [nhhc_danfs]
- Locator
- NHHC DANFS entry 'Alturas (PC-602)', spec block and service narrative
- Finding type
- vessel_history
- Finding
- DANFS record for this hull: laid down 12 April 1942 at Morris Heights, N.Y., by the Consolidated Shipbuilding Corp.; launched 13 June 1942; sponsored by Mrs. W. J. Bolen; commissioned 16 September 1942, Lt. Comdr. Thomas A. Graham, USNR, in command. Escorted three convoys New York-Guantanamo Bay; transited the Panama Canal late December 1942; Western Sea Frontier service along the California coast January-November 1943; reported to the Hawaiian Sea Frontier 14 November 1943; one round-trip voyage to Funafuti, Ellice Islands, December 1943; Hawaiian Islands defenses for the remainder of WWII; postwar Hawaiian service; returned to the west coast March 1946 for inactivation; inactive since March 1946 per the Naval Vessel Register of 25 July 1946; out of commission, in reserve, by January 1947, berthed at Astoria, Oregon; named Alturas in February 1956; name struck from the Navy list July 1960; sold April 1961. Spec block: dp. 280; l. 173'8"; b. 23'0"; dr. 10'10"; s. 20.2 k. (tl.); cpl. 65; a. 1 3", 2 20mm., 2 dcp., 2 dct.; cl. PC-461. Name note: 'A city in the northeastern corner of California... the seat of government of Modoc County.'
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1942-1961
- Population
- Consolidated Shipbuilding construction trades (1942); wartime crew (design complement 65)
- Limitations
- Ship-specific history only; DANFS documents service and specifications, not materials or asbestos content. Live page verified 2026-10-03 (returns 404 to bare curl without a browser user-agent; loads correctly in a normal fetch). DANFS gives the naming month (February 1956) but no day; NavSource supplies 15 February 1956 - carried with attribution.
- Atlas source
- true
- Evidence ID
- ev-uss-alturas-pc602-01
-
[3]NavSource Online: Submarine Chaser Photo Archive, Alturas (PC 602) ex-PC-602 - designation timeline, NVR status notes, specifications incl. propulsion, CO roster, photo captions [other_primary]
- Locator
- NavSource 12/010602.htm header block, specifications block, CO roster, photo captions
- Finding type
- vessel_history
- Finding
- NavSource timeline for this hull: laid down 12 April 1942 at Consolidated Shipbuilding Corp., Morris Heights, NY; launched 13 June 1942; commissioned USS PC-602, 16 September 1942; decommissioned March 1946 and laid up in the Pacific Reserve Fleet, Columbia River Group, Astoria, Oregon; 'Naval Vessel Register of 1 January 1949 lists plan for decommissioning and placing in reserve as January 1947'; named Alturas 15 February 1956; struck from the Navy Register July 1960; sold April 1961; 'Fate unknown.' Specifications: 280 t. light / 450 t. full load; 173'8" x 23' x 10'10"; 20.2 kts; complement 65; armament one 3"/50 dual-purpose mount, one 40mm, three 20mm, two rocket launchers, four depth-charge projectors, two depth-charge tracks; propulsion two 1,440-bhp Fairbanks-Morse 38D8-1/8 diesel engines (serial nos. 832361 and 832364), Westinghouse single reduction gear, two shafts. Call sign NUTK. CO roster: LCDR Thomas Anthony Graham, USNR (16 September 1942). Photo captions place the hull at Consolidated Shipbuilding, Bronx (builder's photo), and c. 1945 Hawaii across the pier from an unidentified patrol craft sweeper, YMS-101, and SC-505 (replacement photo credited as National Archives 80-G-439791 via NHHC).
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1942-1961
- Population
- Consolidated Shipbuilding trades (1942); crew (1942-46); Columbia River reserve-fleet maintenance population (1946-61)
- Limitations
- NavSource is a volunteer secondary compilation keyed to official records - its dates generally track NVR/DANFS but the site is not itself a primary registry. Contains no asbestos content. The propulsion serial-number detail and the 40mm/rocket-launcher fit go beyond the DANFS spec block; armament differences (DANFS 2x20mm vs NavSource 3x20mm plus 40mm and rockets) reflect spec-block vs as-fitted description - both carried with attribution. The 1949 NVR quotation ('plan for decommissioning and placing in reserve as January 1947') reads as NavSource's annotation and is retained as such.
- Atlas source
- true
- Evidence ID
- ev-uss-alturas-pc602-02
-
[4]NARA Catalog, 'USS ALTURAS PC-602' (NAID 175668084), Architectural and Engineering Drawings file unit - RG 19 Records of the Bureau of Ships, series 'Microfilm of Ship Engineering Drawings' (1945-1955); unrestricted; not yet available online [other_primary]
- Locator
- NARA Catalog NAID 175668084; ship plan index row ALTURAS | PC-602 | RG 19 | Microfilm | 175668084
- Finding type
- historical_record
- Finding
- The National Archives holds Bureau of Ships microfilm engineering drawings cataloged under this hull's name: file unit 'USS ALTURAS PC-602' (NAID 175668084) in RG 19 Records of the Bureau of Ships, series 'Microfilm of Ship Engineering Drawings' (1945-1955), creator the Bureau of Ships Ship Design Division Preliminary Design Branch; access and use unrestricted; not yet digitized (per catalog 'Not Yet Available Online'). The NARA ship plan index lists ALTURAS / PC-602 in RG 19 under this NAID. BuShips engineering drawings are the lead for any hull-level material specification (insulation schedules, deck coverings, lagging details) this record lacks.
- Verification
- verified
- Role
- archival_lead
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1945-1955 (series coverage)
- Limitations
- Archival lead only: the catalog establishes that hull-specific engineering drawings exist on microfilm, not what they show - no drawing was retrieved or reviewed, and no asbestos or material content is established by this record.
- Atlas source
- true
- Evidence ID
- ev-uss-alturas-pc602-03
-
[5]Shipbuilding History (Colton), 'Consolidated Shipbuilding, Morris Heights NY' build table - PC-602 as yard hull no. 3119 within a wartime PC block [other_primary]
- Locator
- shipbuildinghistory.com consolidated.htm build table, row hull no. 3119 and adjacent PC rows
- Finding type
- vessel_history
- Finding
- Builder-yard context: the Colton build table for Consolidated Shipbuilding, Morris Heights NY, lists PC-602 as yard hull no. 3119 ('Sub Chaser', commissioned 16-Sep-42, 'Named Alutras 1956, sold 1961' - the table's spelling is 'Alutras', a transposition of Alturas) within a wartime block of PC-461-class chasers at the yard (adjacent rows: PC-564, PC-600, PC-601, PC-603, PC-1191, PC-1192). Yard history per the same page: formed from the 1896 Gas Engine & Power Co. / Charles L. Seabury Co. merger, Seabury operation relocated to Morris Heights; post-WWII the yard bought the Robert Jacob shipyard on City Island and closed Morris Heights; ceased active boatbuilding 1958.
- Verification
- verified
- Role
- context
- Documentation level
- class_or_era
- Accessed
- 2026-10-03
- Study period
- 1941-1945 (wartime build window)
- Population
- Consolidated Shipbuilding construction trades (wartime peak ~3,000 employees per secondary literature)
- Limitations
- Independent secondary compilation, not an official record - used for builder-yard context only. The table misspells the 1956 name ('Alutras'); the correct spelling Alturas per DANFS is carried. Establishes the yard's PC build block and hull number; contains no asbestos or materials content.
- Atlas source
- true
- Evidence ID
- ev-uss-alturas-pc602-04
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[6]Era inference built on: DANFS spec block (PC-461 class, 1942 build) and NavSource specifications (twin Fairbanks-Morse diesels, no steam plant); Navy-wide asbestos-use documentation in GAO HRD-80-2 (see ev-06) [other_primary]
- Locator
- DANFS spec block; NavSource specifications block; GAO HRD-80-2 product-page description
- Finding type
- asbestos_application
- Finding
- A diesel-powered submarine chaser built April-September 1942 sits inside the Navy's documented asbestos-use era. Era-standard applications aboard a small diesel combatant of this period were engine and diesel-exhaust lagging, machinery insulation, gaskets, valve packing, electrical insulation, and deck coverings. Because she carried no steam plant, the boiler/steam-line lagging pathway that dominates asbestos tonnage on steam vessels does not apply - the plausible applications are the smaller-scope diesel-era set above.
- Verification
- inferred
- Role
- supporting
- Documentation level
- class_or_era
- Accessed
- 2026-10-03
- Study period
- 1942-1961
- Population
- Consolidated Shipbuilding construction trades (1942); crew (1942-46); reserve-fleet maintenance and 1961 disposal/shipbreaking population
- Limitations
- Class/era inference only - no hull-specific insulation survey, material list, or work package located for PC-602. Names era-standard applications, not confirmed installed materials; no quantity; no manufacturer attribution for this hull. The BuShips engineering drawings (ev-03, NAID 175668084) are the undigitized lead that could confirm or narrow this inference.
- Atlas source
- true
- Evidence ID
- ev-uss-alturas-pc602-05
-
[7]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) and service/reserve era (1942-1961).
- Verification
- verified
- Role
- context
- Documentation level
- class_or_era
- Accessed
- 2026-10-03
- 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 returns HTTP 403 to automated fetch, confirmed 2026-10-03) - content via product-page description, consistent with Batch-01/98 treatment.
- Atlas source
- true
- Evidence ID
- ev-uss-alturas-pc602-06
-
[8]Batch-7977 search ledger (this record): NHHC DANFS (live); NavSource; NARA catalog NAID 175668084 and ship plan index; NARA digitized deck-log list; shipbuildinghistory.com; GAO product page; CourtListener sweep (4 base queries + 1 sanctioned overflow variant); secondary web litigation sweep [other_primary]
- Locator
- search_ledger rows sl-uss-alturas-pc602-01 through -13
- Finding type
- historical_record
- Finding
- No qualifying ship-specific asbestos record located: no asbestos survey, abatement contract, hazmat disclosure, museum record, or docketed case naming USS Alturas or PC-602 was found in the public sources searched (see search_ledger). CourtListener sweep completed: 'USS Alturas' returned zero opinions and zero dockets; 'PC-602' opinion hits (4) are name collisions on Indiana post-conviction docket numbers (suffix -PC-602) and a Texas energy case; 'PC-602' docket overflowed (74 results, none asbestos/vessel on review) and the sanctioned variant 'PC-602' asbestos returned a single civil-rights removal (Hamberlin v. Arizona, D. Ariz. 2:18-cv-03624) - a text collision in a removal exhibit, not qualifying. Secondary web sweeps surfaced no qualifying case naming this hull; the only 'asbestos aboard' material is law-firm marketing content (levylaw.com jobsite page for Consolidated Shipbuilding and similar listicles) asserting asbestos without primary sourcing - excluded by source policy.
- Verification
- verified
- Role
- negative_finding
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 2026-10-03
- Limitations
- Absence of a located public record does not prove absence of asbestos aboard - undigitized BuShips drawings (NAID 175668084), WWII deck logs, and disposal/sale records remain open leads. Does not establish or defeat any claim of exposure or legal eligibility.
- Atlas source
- true
- Evidence ID
- ev-uss-alturas-pc602-07