Evidence
11 evidence entries recorded; each entry has a stable permalink (#ev-1 … #ev-11).
-
[1]research packet 932-packet.md [other_primary]
- Finding type
- vessel_history
- Finding
- Identity packet verdict: MISMATCH
- Verification
- verified
- Role
- correction
- Documentation level
- ship_specific
- Evidence ID
- uss-pc-735-pc735-pkt-932-packet-md
-
[2]DANFS (NHHC), collected entry 'SC-701 - SC-800', SC-735 paragraph - live NHHC page verified [nhhc_danfs]
- Locator
- DANFS 'SC-701 - SC-800' collected page, SC-735 paragraph
- Finding type
- vessel_history
- Finding
- DANFS documents this hull (verbatim): 'Built at Al Larson Boat Shop, Inc., Terminal Island, Calif. Keel laid 4/20/42. Launched 8/29/42. Commissioned 3/12/43. Transferred to China 6/30/48.' The entry is filed under her SC designation in the SC-701 - SC-800 volume; it does not mention the PC-735 commissioning designation, the April 1943 reclassification, or a striking date.
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1942-1948 (entry coverage)
- Population
- Al Larson Boat Shop construction trades (1942-43); crew (1943-forward)
- Limitations
- Ship-specific milestones only; no asbestos or material content and no service narrative (one-line DANFS entry). Dates are authoritative for construction/commissioning/transfer; the PC-735 -> SC-735 designation sequence comes from NavSource (ev-02), not from this source.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-735-01
-
[3]NavSource Online: Submarine Chaser Photo Archive, 'SC-735 ex-PC-735' (page verified live via Firecrawl) [other_primary]
- Locator
- NavSource 12/150735.htm header block, class timeline block, specifications block
- Finding type
- vessel_history
- Finding
- NavSource timeline for this hull: SC-497 class submarine chaser; laid down 20 April 1942 by the Al Larson Boat Shop, Inc., Terminal Island, CA; launched 29 August 1942; commissioned PC-735 12 March 1943; reclassified SC-735 in April 1943; struck from the Naval Register 26 February 1946; transferred to the Republic of China 30 June 1948; fate unknown. Call sign Nan-Xray-Jig-Yoke. Banner: 'SC-735 served the Navies of the United States and China'; no photograph available. Spec block: displacement 148 t.; length 110'10"; beam 17'; draft 6'6"; speed 15.6 kts.; complement 28; armament one 40mm mount, two .50 cal. machine guns, two depth-charge projector 'Y Guns', two depth-charge tracks; propulsion two 880bhp General Motors 8-268A diesel engines, Snow and Knobstedt single reduction gear, two shafts.
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1942-1948
- Population
- Al Larson construction trades (1942-43); U.S. Navy crew (1943-46); Republic of China Navy crew (1948-on)
- Limitations
- NavSource is a volunteer secondary compilation, not a primary registry - its milestone dates track DANFS/Colton where they overlap (all agree on laid down, launched, commissioned, and China-transfer dates). Page banner states 'There is no DANFS history available for SC-735', which is outdated - the NHHC collected SC-701-800 page does carry a one-line entry (ev-01). Contains no asbestos content. No service narrative, no decommissioning date, no post-1948 detail.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-735-02
-
[4]Shipbuilding History (Tim Colton compilation, njscuba.net mirror), Al Larson Boat Shop build table - row 'SC-735 | US Navy | subchaser | 148d | 110 | 12 Mar 1943 | to Taiwan 1948' [other_primary]
- Locator
- Al Larson Boat Shop build table, SC-735 row
- Finding type
- vessel_history
- Finding
- Independent yard-list corroboration: Colton's Al Larson Boat Shop construction table lists SC-735, US Navy, 148-ton 110-foot subchaser, delivered/commissioned 12 March 1943, 'to Taiwan 1948' - consistent with the DANFS/NavSource commission date and the 1948 Republic of China transfer. Sister hull SC-734 was built at the same yard (delivered 28 December 1942, to FLC 1948).
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1942-1948
- Population
- Al Larson construction trades (1942-43)
- Limitations
- Secondary yard-history compilation, not a primary contract document - values track official registries. 'to Taiwan 1948' is the compiler's shorthand for the Republic of China transfer. No asbestos, material, or work-package content.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-735-03
-
[5]The Pacific War Online Encyclopedia (Kent G. Budge, compiled from official records), Task Force 77 Luzon Attack Force order of battle - 'Hollandia LST Unit' lists SC-735 [other_primary]
- Locator
- pwencycl 'Luzon' page, TF 77 order of battle table, Hollandia LST Unit row; corroborated by ibiblio.org/hyperwar/USN/ships/ships-sc.html index row 'SC-722-737 ... 1942-44'
- Finding type
- historical_record
- Finding
- A secondary order-of-battle compilation places this hull in the Southwest Pacific in early 1945: under Task Force 77 'Luzon Attack Force' (Kinkaid) for the Lingayen Gulf operation, the 'Hollandia LST Unit' line lists DD Monssen, 7 LST, SC-735, and 7 AK - i.e., SC-735 assigned to the amphibious-lift echelon staging from Hollandia, New Guinea. This is the only located source placing the hull at a specific wartime station; the HyperWar 'Ships of the U.S. Navy 1940-1945' index carries SC-722-737 (covering this hull) at '1942-44' service with no loss annotation.
- Verification
- partial
- Role
- archival_lead
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1945-01 (Lingayen operation)
- Population
- U.S. Navy crew, Seventh Fleet amphibious operations (early 1945)
- Limitations
- SECONDARY COMPILATION - Budge's encyclopedia transcribes Navy orders of battle but is not itself a primary document; the underlying TF 77 action report / war diary (NARA RG 38) is the primary source and was not examined. Single-source placement; does not document the hull's movements before or after this listing, and has no asbestos content. The NARA deck logs (ev-05) are the direct lead for her 1943-45 stations.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-735-04
-
[6]NARA, U.S. Navy Deck Logs (RG 24): batch-supplied NARA corroboration lists a deck-log file unit for SC-735 with coverage 3/12/1943 - 6/30/1945 (commissioning through mid-1945); NARA deck-logs series description page cited [other_primary]
- Locator
- NARA RG 24 deck-logs file unit for SC-735 (coverage 3/12/1943-6/30/1945); series description at archives.gov/research/military/logbooks/navy-online
- Finding type
- historical_record
- Finding
- NARA holds deck logs for SC-735 spanning 12 March 1943 (her commissioning as PC-735) through 30 June 1945 - confirming the hull was in U.S. Navy service and keeping logs through at least mid-1945. These logs are the primary source for her day-to-day stations, availabilities, and any maintenance that could bear on material disturbance; they are not digitized for public online viewing as of this session.
- Verification
- partial
- Role
- archival_lead
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1943-03-12 to 1945-06-30
- Population
- U.S. Navy crew (1943-45)
- Limitations
- Coverage dates per the batch-supplied NARA corroboration - the National Archives Catalog is JavaScript-rendered and could not be fetched from this session to confirm the file-unit NAID directly; verification partial. A deck-log series is a lead, not an exposure record: logs document stations and events, not insulation content.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-735-05
-
[7]HyperWar 'Ships of the U.S. Navy, 1940-1945' (compiled from Navy data), USS SC-497 class-leader page - 'SC-497 class Submarine Chaser (Wooden Hull)' spec block [other_primary]
- Locator
- HyperWar SC-497 page spec block; ww2pcsa.org/subchaser.html class tables
- Finding type
- vessel_history
- Finding
- Class-level spec documentation: SC-497 class 'Submarine Chaser (Wooden Hull)' - displacement 98 tons, length 110'10", beam 17', draft 6'6", speed 20 knots, armament 1 x 3"/50 + 2x2 .50-cal mg, complement 2 officers + 20 enlisted, diesel engines twin screws 1,200 shaft hp (early-war fit; NavSource's wartime spec block for SC-735 shows the later 40mm/Y-gun fit at 148 t., 15.6 kts., 28 complement). Patrol Craft Sailors Association class data: 475 ordered, 37 cancelled, 438 delivered at ~$500,000 each; lend-lease 142 (France 50, USSR 78, Brazil 8, Norway 3, Mexico 3); 70 converted to SCC beach control craft, 18 to AMC, 8 to PGM.
- Verification
- verified
- Role
- context
- Documentation level
- class_or_era
- Accessed
- 2026-10-03
- Study period
- 1941-1948 (class service window)
- Population
- SC-497-class crews (type context)
- Limitations
- Class documentation, not a hull record - figures describe the type, not this specific vessel, and variant figures (98 vs 148 tons; 20 vs 15.6 kts; 22 vs 28 complement; gun-fit evolution) reflect fit/load differences, not errors (see gaps). No asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-735-06
-
[8]Era inference built on: NavSource SC-735 spec block (wooden hull; two GM 8-268A diesels, two shafts); HyperWar/PCSA class data (diesel, no steam plant); GAO HRD-80-2 Navy asbestos-era documentation (ev-08) [other_primary]
- Locator
- NavSource spec block; HyperWar SC-497 spec block; GAO HRD-80-2 program context
- Finding type
- asbestos_application
- Finding
- A wooden-hulled, diesel-powered 110-foot submarine chaser built 1942-43 sits inside the Navy's documented asbestos-use era; era-standard applications aboard a vessel of this type and period were engine exhaust lagging, machinery insulation, gaskets, valve packing, and electrical insulation in a compact hull. As a diesel vessel she carried no steam plant - the boiler/turbine lagging pathway of steam ships does not apply, and her small wooden hull carried materially less installed insulation than steel steam combatants.
- Verification
- inferred
- Role
- supporting
- Documentation level
- class_or_era
- Accessed
- 2026-10-03
- Study period
- 1942-1948
- Population
- Al Larson construction trades (1942-43); U.S. Navy crew (1943-46); any repair/overhaul trades during availabilities (stations undocumented)
- Limitations
- Class/era inference only - no hull-specific insulation survey, material list, work package, or deck-log extraction located for this vessel. Names era-standard applications, not confirmed installed materials. No quantity. The small-yard, wooden-boat construction context argues for a lower installed asbestos load than steam-driven steel hulls, but does not establish presence or absence aboard this hull.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-735-07
-
[9]GAO, Navy Efforts To Protect Workers From Asbestos Exposure, HRD-80-2 (Oct 18, 1979) [gao]
- Locator
- GAO product page HRD-80-2, Highlights section
- Finding type
- gov_survey
- Finding
- GAO documented Navy asbestos-era policy: the Navy's 1975 policy was to remove and replace with nonasbestos materials only insulation that was damaged or had to be removed for repairs, modified in 1979 to selectively replace asbestos insulation in high-maintenance areas - confirming installed asbestos insulation was still present fleet-wide decades after this hull's era. Review scoped to Long Beach and Norfolk Naval Shipyards.
- Verification
- verified
- Role
- context
- Documentation level
- class_or_era
- Accessed
- 2026-10-03
- Study period
- 1979 (report); era context 1940s-1970s
- Population
- Navy shipyard workers (program context)
- Limitations
- Program-level documentation at two naval shipyards; supports era context only, not any fact specific to this hull. This hull left U.S. service in 1946-48, before the documented policy era; the row establishes era practice, not materials aboard SC-735. gao.gov returns HTTP 403 to curl from this network; content via the live product page fetched through Firecrawl (verified 2026-10-03).
- Atlas source
- true
- Evidence ID
- ev-uss-pc-735-08
-
[10]Batch-8109 search ledger (this record): DANFS live page; NavSource 12/150735; Colton Larson yard table; pwencycl TF 77 OOB; HyperWar SC index/class page; PCSA class page; NARA deck-log coverage; NVR; GAO product page; secondary web litigation/asbestos sweep; CourtListener ('PC-735' opinions run - name collision only; 3 queries blocked) [other_primary]
- Locator
- search_ledger rows sl-uss-pc-735-01 through -14
- Finding type
- historical_record
- Finding
- No qualifying ship-specific asbestos record located: no asbestos survey, insulation material list, abatement contract, hazmat disclosure, or verified litigation naming USS PC-735 / SC-735 was found in the public sources searched. CAVEAT: CourtListener is only partially searched - the 'PC-735' opinion query completed (count=1, name collision only: United States v. Ford, D. Or. 2017, matching attorney-address text 'PC, 735 SW First Avenue' - no vessel connection, not asbestos litigation); the 'PC-735' docket and both 'SC-735' queries remain blocked - the authenticated fleet helper reported the fleet-wide request budget momentarily spent (paced ~58/hr against the 1,400/day quota) on repeated attempts; logged as blocked in search_ledger, not as a negative result. The secondary web asbestos sweep surfaced only name collisions (concrete-product 'PC 735', Kentucky docket '2008-SC-735', street addresses) - no law-firm or other content asserting asbestos aboard this hull was located at all.
- 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 (only the opinion index was queried; dockets unsearched). Deck logs (ev-05), Bureau of Ships work packages, and any transfer/survey records are undigitized leads. Does not establish or defeat any claim of exposure or legal eligibility.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-735-09
-
[11]Designation cross-check: NavSource submarine-chaser index ('The type symbol PC was retained for the steel 173-footers, and the separate symbol SC was adopted for the 110-foot vessels'); NavSource SC-735 page ('ex-PC-735'); NavSource SC-497 page (same commissioned-PC / reclassified-SC-April-1943 pattern); DANFS SC-735 entry [other_primary]
- Locator
- NavSource 12/01idx.htm index note; NavSource 12/150735.htm and 12/150497.htm timelines; DANFS SC-701-800 page
- Finding type
- historical_record
- Finding
- CORRECTION: this hull is an SC-497-class (110-foot wooden) submarine chaser, NOT a PC-461-class (173-foot steel) patrol craft - the 'PC-735' on her file label is her March-April 1943 commissioning designation, not a class assignment. She was laid down as a 110-foot chaser, commissioned USS PC-735 on 12 March 1943, and reclassified SC-735 in April 1943 when the Navy reserved the PC symbol for the steel 173-footers and adopted SC for the wooden 110-foot class; class leader SC-497 followed the identical pattern (commissioned PC-497 15 April 1942, reclassified April 1943). Records keyed to 'PC-461 class' for this vessel are a designation error.
- Verification
- verified
- Role
- correction
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1943 (designation window)
- Limitations
- Corrects a designation/classification conflation, not a material claim. The April 1943 reclassification date for this specific hull rests on NavSource (DANFS is silent on the designation change); the class-wide symbol split is stated by the NavSource index and consistent across per-hull pages. No asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-735-10