Evidence
10 evidence entries recorded; each entry has a stable permalink (#ev-1 … #ev-10).
-
[1]research packet 930-packet.md [other_primary]
- Finding type
- vessel_history
- Finding
- Identity packet verdict: PHANTOM
- Verification
- verified
- Role
- negative_finding
- Documentation level
- ship_specific
- Evidence ID
- uss-pc-725-pc725-pkt-930-packet-md
-
[2]DANFS (NHHC), SC-701 - SC-800 composite entry, 'SC-725' (one-line craft entry) [nhhc_danfs]
- Locator
- SC-725 entry within DANFS composite 'SC-701 - SC-800' page (Volume VI listing)
- Finding type
- vessel_history
- Finding
- DANFS entry for this hull, quoted in full: 'Built at Harbor Boat Building Co., Terminal Island, Calif. Keel laid 4/7/42. Launched 7/23/42. Commissioned 1/2/43. Transferred to Maritime Commission 12/16/46.' The composite page lists sister hulls SC-724 through SC-729 all built at the same yard.
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1942-1946
- Population
- Harbor Boat Building construction trades (1942); crew (1943-forward)
- Limitations
- Ship-specific identity/milestone record only; no asbestos or material content. The DANFS one-line entry is filed under SC-725 and does not mention the PC-725 commissioning designation or the April 1943 reclassification - that sequence comes from NavSource (ev-02). Commissioning date conflicts with NavSource's 1 January 1943 by one day (see gaps).
- Atlas source
- true
- Evidence ID
- ev-uss-pc-725-pc725-01
-
[3]NavSource Online: Submarine Chaser Photo Archive, SC-725 (ex-PC-725) - designation timeline, specifications, commanding officers, fishing-vessel afterlife; uboat.net Allied Warships SC-725 (ship 8942) secondary cross-check: ordered 14 Feb 1942 [other_primary]
- Locator
- NavSource 12/150725.htm header block (ex-PC-725), timeline, specifications block, commanding-officer table; uboat.net/allies/warships/ship/8942.html data table
- Finding type
- vessel_history
- Finding
- NavSource timeline for this hull: laid down 7 April 1942 by Harbor Boat Building Co., Terminal Island, CA; launched 23 July 1942; commissioned PC-725, 1 January 1943; reclassified SC-725 in April 1943; decommissioned December 1945 at San Francisco, CA; struck from the Naval Register 21 January 1946; transferred to the Maritime Commission 16 December 1946; acquired 1948 by Atlantic and Pacific Packing Co., Inc. of Astoria, OR for use as a fishing boat named Miss April; renamed Islander 17 August 1951; acquired 1954 by Stanley S. Dahl of Seattle, WA; acquired 1957 by Duncan E. MacAllister of Everett, WA; out of documentation 1986; fate unknown. Specifications: 148 t., 110'10" x 17' x 6'6", 15.6 kts, complement 28; armament one 40mm mount, two .50 cal. machine guns, two Y-gun depth-charge projectors, two depth-charge tracks; two 880 bhp GM 8-268A diesels, Snow and Knobstedt single-reduction gear, two shafts. Commanding officers LTJG Donald F. Ulrich, USNR (1 January 1943) and LTJG G. E. Smith, Jr., USNR (1945). Page photography shows the hull numbered 'SC725' in wartime service; uboat.net adds 'ordered 14 Feb 1942' (secondary).
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1942-1986
- Population
- Harbor Boat Building construction trades (1942); crew (1943-45); fishing crews (1948-86)
- Limitations
- NavSource and uboat.net are volunteer/specialist secondary compilations, not primary registries - milestone dates generally track NVR/DANFS but the commissioning date differs from DANFS by one day (NavSource 1 Jan vs DANFS 2 Jan 1943; DANFS carried - see gaps). Spec block conflicts with class-level compilations on displacement and complement (see gaps). No asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-725-pc725-02
-
[4]NHHC Navy Department Library, 'United States Pacific Fleet Organization, 1 May 1945' (wartime organizational directory) [other_primary]
- Locator
- Service Squadron Two SC-type vessel listing ('SC 725 ... Lt. G. E. Smith, Jr. (USNR)', prefix 94); tactical-organization table ('Task Force 94 | Forward Area, CentPac')
- Finding type
- vessel_history
- Finding
- The 1 May 1945 Pacific Fleet organization lists 'SC 725' in the Service Squadron Two vessel inventory (Service Force, Pacific Fleet; Commander Service Squadron Two V. Adm. W. W. Smith), commanded by Lt. G. E. Smith, Jr. (USNR). The document's tactical-organization legend decodes the vessel's listed prefix '94' as Task Force 94, 'Forward Area, CentPac' (V. Adm. J. H. Hoover) - placing this hull in the forward Central Pacific operating area as of that date. The commanding-officer entry corroborates NavSource's second CO (LTJG G. E. Smith, Jr., 1945).
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1945-05-01
- Population
- Crew under Lt. Smith (1945); TF 94 forward-area personnel
- Limitations
- A single-date organizational placement record: establishes assignment and commander as of 1 May 1945, not the hull's movements, operations, or whereabouts at other dates. The TF-94 decode comes from the same document's own tactical legend. No asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-725-pc725-03
-
[5]NARA Special List 44, 'List of Logbooks of US Navy Ships, Stations, and Miscellaneous Units, 1801-1947' - ship-number index (RG 24, Entry 118) [other_primary]
- Locator
- SL-44 ship-number index, 'SC-725 9/1/1943 7/31/1945' (RG 24 Entry 118, NAID 581208 series)
- Finding type
- historical_record
- Finding
- NARA's logbook index lists a deck-log file for SC-725 covering 9/1/1943 - 7/31/1945. No logbook entries appear under PC-725 - the hull's logs are filed under the SC designation only, and coverage begins roughly eight months after commissioning (consistent with the post-reclassification period). These are physical logbooks at NARA, the primary documentary source for this hull's day-to-day wartime operations.
- Verification
- verified
- Role
- archival_lead
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1943-09-01 to 1945-07-31
- Population
- Crew (log subjects, 1943-45)
- Limitations
- Archival lead only: the index establishes that logs exist and their date coverage, not their contents - the logs are not digitized and were not read. Coverage does not extend to the January-August 1943 PC-725 commissioning period or to decommissioning. Deck logs record movements/events, not materials - no asbestos content expected or established.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-725-pc725-04
-
[6]Bureau of Ships, Booklet of General Plans for USS SC-1022 (ex PC-1022), BuShips Basic No. SC497-50103-509701 (194X scan, ship-design-drawings collection); corroborated by NavSource 110' SC class index and HyperWar 'Ships of the U.S. Navy 1940-1945 - Submarine Chasers' SC-497 class spec block [other_primary]
- Locator
- archive.org sc1022bogp194x, sheets 01-03 (title/general dimensions/midship section); NavSource 12/15idx.htm class preamble and ex-PC listing; ibiblio.org/hyperwar/USN/ships/ships-sc.html SC-497 class block
- Finding type
- historical_record
- Finding
- The BuShips Booklet of General Plans for an SC-497-class sister hull (SC-1022) states it 'was prepared to take care of the great number of possible variations in the SC-497-511-977 and 1266 classes, due to the various types of machinery and armament furnished the subject vessels' - i.e., this hull's class design. Its general-dimensions and midship-section sheets document wooden construction throughout: white oak keel and frames, yellow-pine planking, fir deck structure, galvanized-steel straps and floors, canvas deck covering; no insulation-material callouts appear on the structural sheets examined. NavSource's class index describes 580 SC-497-class wood-hulled 110-foot submarine chasers built during WWII (142 Lend-Lease); HyperWar's class spec block carries 98 t, 110'10", diesel twin-screw 1,200 shp. SC-725's NavSource page and the SC index further document that many class hulls, including SC-725, commissioned under PC designations in early 1943 and were reclassified to SC in April 1943.
- Verification
- verified
- Role
- context
- Documentation level
- class_or_era
- Accessed
- 2026-10-03
- Study period
- 1941-1945
- Population
- Construction trades at ~30 small boatyards (1941-44); SC-497-class crews
- Limitations
- Class-design documentation, not a hull record: the booklet is SC-1022's plan set (same BuShips design series), not SC-725's, and general plans do not substitute for this hull's construction or repair records. Absence of insulation callouts on examined structural sheets does not establish absence of insulation aboard; machinery-specification documents were not examined. Class-size figures conflict across compilations (580 vs 438 - see gaps). No asbestos content in the sheets reviewed.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-725-pc725-05
-
[7]Era inference built on: NavSource ship specifications (2 x GM 8-268A diesels, no steam plant); BuShips SC-1022 BOGP (wooden construction); GAO HRD-80-2 (Navy asbestos program era - see ev-07) [other_primary]
- Locator
- NavSource specifications block; SC-1022 BOGP sheets 02-03; GAO HRD-80-2 product page
- Finding type
- asbestos_application
- Finding
- A wood-hulled 110-foot diesel submarine chaser built 1942-43 sits inside the Navy's documented asbestos-use era, but its asbestos-relevant systems are materially narrower than a steam vessel's: with diesel propulsion there are no boilers, steam drums, or steam-line runs to lag. Era-standard small-craft applications aboard a vessel of this type and period were engine and exhaust lagging in the machinery space, machinery gaskets and packing (including stern-tube/shaft packing), and electrical insulation in the confined wooden hull. Any insulation materials installed would have been period-era products.
- Verification
- inferred
- Role
- supporting
- Documentation level
- class_or_era
- Accessed
- 2026-10-03
- Study period
- 1942-1986
- Population
- Harbor Boat Building construction trades (1942); crew (1943-45); Maritime Commission/fishing-era crews (1946-86)
- Limitations
- Class/era inference only - no hull-specific insulation survey, material list, work package, or deck-log material record was located for SC-725, and the class BOGP structural sheets reviewed contain no insulation-material callouts. Names era-standard applications, not confirmed installed materials; no quantity, no manufacturer attribution, no present-day presence. Wooden diesel construction narrows, but does not eliminate, the era exposure pathway.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-725-pc725-06
-
[8]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 era (1943-45).
- 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 blocks automated fetch, HTTP 403, confirmed 2026-10-03) - content via product-page description.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-725-pc725-07
-
[9]Designation cross-check: DANFS composite entry (files hull under SC-725); NavSource designation line 'ex-PC-725' with 'Reclassified SC-725 in April 1943'; NavSource SC index ex-PC-NNN pattern across class hulls; HyperWar steel-PC (PC-461 class) vs wood-SC type distinction [other_primary]
- Locator
- NavSource 12/150725.htm designation line and timeline; NavSource 12/15idx.htm ex-PC-NNN entries; DANFS SC-725 entry; NARA SL-44 index (no PC-725 logbook filing)
- Finding type
- historical_record
- Finding
- CORRECTION: the intake manifest's 'USS PC-725 (PC-461 class)' conflates this hull's three-month commissioning designation with the unrelated 173-foot steel PC-461 class. Documented sequence: this 110-foot wooden SC-497-class hull commissioned as PC-725 (January 1943) and was reclassified SC-725 in April 1943 - part of a class-wide pattern in which many SC-497-class boats commissioned under PC designations in early 1943 and were reclassified to SC that April. PC-725 was never a PC-461-class patrol craft; DANFS and NARA file the hull under SC-725.
- Verification
- verified
- Role
- correction
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1943
- Limitations
- Corrects a designation/class conflation, not a material claim. The April 1943 reclassification month rests on NavSource (secondary compilation); DANFS's one-line entry does not mention the PC designation at all, and the exact reclassification date is unstated in located sources.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-725-pc725-08
-
[10]Batch-8099 search ledger (this record): DANFS composite entry; NavSource SC-725 page and SC class index; NHHC Pacific Fleet organization 1 May 1945; NARA SL-44 log index; BuShips SC-1022 BOGP (archive.org); HyperWar class spec; GAO product page; CourtListener (blocked - fleet pacing); secondary web litigation sweep [other_primary]
- Locator
- search_ledger rows sl-uss-pc-725-pc725-01 through -13
- Finding type
- historical_record
- Finding
- No qualifying ship-specific asbestos record located: no asbestos survey, abatement contract, hazmat disclosure, or verified litigation naming PC-725 or SC-725 was found in the public sources searched (see search_ledger). CAVEAT: CourtListener could not be queried this session - the authenticated fleet helper returned pacing guidance (hourly budget spent, ~58/hr shared pace) on five attempts across ~40 minutes; logged as blocked in search_ledger, not as a negative result. Secondary web sweeps ('asbestos', 'lawsuit', 'mesothelioma' variants) surfaced no qualifying case and no ship-specific asbestos content of any kind - every hit was a name collision (reporter citations, law-firm street addresses, zip codes).
- 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 - and the litigation repository search is a genuine open gap (blocked by fleet pacing, not run). The hull's 1943-45 deck logs (NARA, undigitized) and any Maritime Commission disposal files are the unfollowed documentary leads. Does not establish or defeat any claim of exposure or legal eligibility.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-725-pc725-09