Evidence
11 evidence entries recorded; each entry has a stable permalink (#ev-1 … #ev-11).
-
[1]DANFS appendix listing, SC-701 through SC-800 (NHHC Online DANFS, live page verified 2026-10-03) [nhhc_danfs]
- Locator
- DANFS index page 'SC-701 - SC-800', SC-728 entry
- Finding type
- vessel_history
- Finding
- DANFS lists SC-728: 'Built at Harbor Boat Building Co., Terminal Island,Calif. Keel laid 5/8/42. Launched 11/30/42. Commissioned 3/8/43. Transferred to Maritime Commission 12/20/46.' The entry is filed under the SC designation; it does not mention the brief PC-728 commissioning designation.
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1942-1946
- Limitations
- Terse appendix-style entry only - no operations history, no decommissioning/striking dates, no specifications, no asbestos or material content. The PC-728 designation interval is documented only by NavSource.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-728-pc728-01
-
[2]NavSource Online: Submarine Chaser Photo Archive, SC-728 page (live navsource.net URL verified 2026-10-03) [other_primary]
- Locator
- NavSource SC-728 page, archives/12/150728.htm
- Finding type
- vessel_history
- Finding
- NavSource identifies the hull as 'ex-PC-728,' SC-497 class: commissioned PC-728 on 8 March 1943, reclassified SC-728 in April 1943, decommissioned 10 December 1945, struck from the Naval Register 3 January 1946, transferred to the Maritime Commission 20 December 1946. Specifications: 148 t., 110'10" x 17' x 6'6", 15.6 kts, complement 28, one 40mm mount, two .50 cal MG, two Y-gun depth-charge projectors and two tracks; two 880 bhp GM 8-268A diesels, Snow and Knobstedt single-reduction gear, two shafts. COs: LT George C. Garris USNR (8 Mar 1943), LTJG R. T. Conley USNR (1945). Post-Navy: acquired 1952 by William P. Kesling, Long Beach, as yacht Viajero II; Viajero II Inc., La Jolla, 1956; William J. Wineberg, Coronado, 1957; out of documentation 1982; fate unknown.
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1942-1982
- Population
- Wartime complement ~28 officers and men
- Limitations
- NavSource is a volunteer-maintained photographic/historical archive, not an official Navy publication; the PC-728 commissioning designation and the decommissioning/striking dates rest on NavSource alone among located sources (DANFS omits them). No asbestos content on the page. NavSource itself notes 'There is no DANFS History currently available for SC-728' - inaccurate in the narrow sense that the DANFS appendix entry exists, though it carries no narrative history.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-728-pc728-02
-
[3]NHHC Navy Department Library, 'United States Pacific Fleet Organization, 1 May 1945' (official wartime organization document, live page verified 2026-10-03) [other_primary]
- Locator
- Service Squadron Two unit list, SC vessels section, '11 | SC 728 | | Lt. (jg) R. T. Conley (USNR)'
- Finding type
- historical_record
- Finding
- SC-728 appears in the official 1 May 1945 Pacific Fleet organization under Service Squadron Two, Service Force, Pacific Fleet (flagship Argonne, AG-31; Commander ServRon Two V. Adm. W. W. Smith), with commanding officer Lt. (jg) R. T. Conley (USNR) - corroborating Pacific service and matching NavSource's 1945 commanding-officer listing.
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1945-05-01
- Limitations
- Organizational list only - establishes fleet assignment and commander on a single date; establishes no operations history, locations, or material conditions aboard. No asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-728-pc728-03
-
[4]NARA Special List #44 - List of Logbooks of U.S. Navy Ships, Stations, and Miscellaneous Units, 1801-1947, by Ship Number (PDF verified live 2026-10-03) [other_primary]
- Locator
- sl-44-ship-number.pdf, SC section, two SC-728 rows
- Finding type
- historical_record
- Finding
- Special List #44 catalogs two SC-728 deck-log holdings at the National Archives: coverage 3/8/1943-11/30/1943 and 2/1/1944-12/10/1945 - together spanning nearly the entire commissioned period except December 1943-January 1944. The logs are filed under SC-728 (no PC-728 entries appear in the list).
- Verification
- verified
- Role
- archival_lead
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1943-03-08 to 1945-12-10 (coverage)
- Limitations
- Catalog of holdings, not the logs themselves - establishes that deck logs exist in RG 24 custody, not their content. SC-728 does not appear on the 'Navy Deck Logs Available in the National Archives Catalog' digitization list; the logs are not digitized. Coverage dates are log-coverage dates, not commissioning/decommissioning evidence. December 1943-January 1944 coverage gap unexplained.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-728-pc728-04
-
[5]uboat.net Allied Warships, USS SC-728 (SC-728) page (live verified 2026-10-03) [other_primary]
- Locator
- uboat.net ship page 8945, 'Notable events involving SC-728'
- Finding type
- historical_record
- Finding
- Secondary reference confirms SC-497 class, builder Harbor Boat Building Co. (Terminal Island), ordered 14 Feb 1942, laid down 8 May 1942, launched 30 Nov 1942, commissioned 8 Mar 1943. Records one wartime event: on 30 August 1943, RNZAF No. 6 Squadron PBY-5 NZ4012 (Flying Officer McVicker, based at Lauthala Bay, Fiji) conducted six hours of anti-submarine exercises with 'U.S. Navy Submarine Chaser 728' - placing the hull in Fiji waters in August 1943.
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1943
- Limitations
- uboat.net is a respected secondary reference but not a primary or official source; the Fiji exercise is documented here alone among located sources. The page lists the boat under SC-728 only - no PC-728 designation is carried. No asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-728-pc728-05
-
[6]Shipbuilding History (T. Colton), Harbor Boat Building Co. construction list (live page verified 2026-10-03) [other_primary]
- Locator
- harbor.htm construction table, row '157 | 264649 | SC 728'
- Finding type
- historical_record
- Finding
- The yard compilation lists Harbor hull 157 as 'SC 728,' U.S. Navy sub chaser, 95 dwt, 110 ft, official number 264649, delivered 8-Mar-43, disposition 'Sold as Viajero II' - corroborating builder, delivery date, tonnage, and the post-Navy yacht trail. Sisters SC-722 through SC-729 occupy consecutive yard hulls 151-158.
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1942-1946
- Limitations
- Professional secondary compilation of yard records, not an official source; '95d' tonnage conflicts with NavSource's 148 t. (different measures - deadweight vs displacement - neither reconciled here). Yard list uses the SC designation at delivery; it does not document the brief PC-728 designation. No asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-728-pc728-06
-
[7]NARA, The Unwritten Record blog, 'Spotlight: Submarine Chasers' (April 26, 2016; live verified 2026-10-03) [other_primary]
- Locator
- Unwritten Record post, text and RG 19 plan links
- Finding type
- historical_record
- Finding
- NARA's archival blog documents the 110-foot wooden submarine-chaser type: enabling legislation specified an 'economical and expeditious' design built of wood because steel and large shipyards were committed to larger vessels, so these craft were built 'at a size suitable for quick turnaround in smaller commercial shipyards'; 440 of the wooden WWI-era boats were built, and 'an improved wooden 110-foot SC was put into production for World War II' - the SC-497 program to which this hull belongs. RG 19 ship-engineering drawings for the type are in NARA custody.
- Verification
- verified
- Role
- context
- Documentation level
- class_or_era
- Accessed
- 2026-10-03
- Study period
- 1916-1945 (program context)
- Limitations
- Class/program-level context from an official agency publication; names no individual hull and contains no asbestos or material-content information. The featured plans (SC-448) are WWI-era; the WWII SC-497 class is described only in passing.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-728-pc728-07
-
[8]GAO, 'Navy Efforts To Protect Workers From Asbestos Exposure,' HRD-80-2 (published Oct 18, 1979; product page live verified 2026-10-03) [gao]
- Locator
- GAO product page HRD-80-2, Highlights section; full report hrd-80-2.pdf
- Finding type
- gov_survey
- Finding
- GAO reviewed the Navy's efforts to protect workers from asbestos exposure, including 'the use of asbestos in Navy ships, the cost of removing asbestos from Navy ships, and compensation programs for asbestos-related disabilities,' with fieldwork at Long Beach and Norfolk Naval Shipyards; Navy policy in 1975 was to remove/replace only damaged insulation or that requiring removal for repairs, modified in 1979 to selective replacement in high-maintenance areas. Establishes Navy-wide asbestos insulation use in ships of the era.
- Verification
- verified
- Role
- context
- Documentation level
- class_or_era
- Accessed
- 2026-10-03
- Study period
- 1975-1979 (report period); WWII-1970s era context
- Population
- Navy shipyard workers (class context)
- Limitations
- Program-level report on steam-era naval vessels and shipyard repair activity; no submarine chaser or this hull is named, and the fieldwork yards are large industrial naval shipyards, not the small commercial yard that built this hull. Context for the era's Navy asbestos environment only.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-728-pc728-08
-
[9]Era/design inference built on: NavSource SC-497-class specifications (two 880 bhp GM 8-268A diesels, no steam plant); NARA Unwritten Record (wooden 110-ft type built in small commercial yards); GAO HRD-80-2 (Navy-wide asbestos-insulation era context) [other_primary]
- Locator
- Composite of cited class sources; no hull-specific document
- Finding type
- asbestos_application
- Finding
- SC-497-class hulls were wooden 110-foot diesel-electric submarine chasers; with no boilers or steam distribution, the steam-fleet's high-density asbestos systems (boiler lagging, steam-line insulation, turbine packing) were absent. Era-consistent residual applications aboard a 1942-43 diesel combatant: diesel exhaust lagging, machinery gaskets and packing, electrical insulation, and asbestos-bearing panel/deck compounds where specified by Navy plans of the period.
- Verification
- inferred
- Role
- supporting
- Documentation level
- class_or_era
- Accessed
- 2026-10-03
- Study period
- 1942-1945
- Population
- Construction trades (Harbor Boat Building Co., 1942-43); wartime complement ~28
- Limitations
- Pure class/era inference - no manual, plan, survey, or hull record located ties any asbestos product to SC-728 specifically. Quantities unknown; presence aboard this hull is neither established nor excluded. The wooden-hull/diesel configuration bounds the plausible footprint well below steam-vessel levels.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-728-pc728-09
-
[10]Batch-8102 search ledger (this record): DANFS; NHHC Pacific Fleet Organization 1 May 1945; NavSource; NARA Special List #44; NARA digitized-deck-log list; GAO; CourtListener base queries (pacing-blocked at session end - see ledger); secondary web searches [other_primary]
- Locator
- search_ledger rows sl-uss-pc-728-pc728-01 through -12
- Finding type
- historical_record
- Finding
- No qualifying ship-specific asbestos record located: no survey, abatement contract, hazmat disclosure, litigation pleading, or museum/trust documentation naming SC-728 or PC-728 was found in the public sources searched (see search_ledger). Web asbestos-term searches return only name collisions (antibody catalog items, real-estate listings, municipal records).
- 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 - era materials may have been present and removed undocumented at disposal or in civilian conversion. Does not establish or defeat any claim of exposure or legal eligibility. CourtListener base queries were pacing-limited at session end; the litigation surface for this hull is expected to be empty (obscure hull-number designator, no listicle coverage) but is not confirmed exhausted.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-728-pc728-10
-
[11]Designation cross-check: batch roster carried 'PC-728' with PC-461 class; DANFS appendix listing, NARA Special List #44, NHHC Pacific Fleet organization, uboat.net, and the Harbor yard list all carry this hull as SC-728 / SC-497 class [other_primary]
- Locator
- NavSource SC-728 page designation line; DANFS SC-701-SC-800 appendix; SL-44 SC section
- Finding type
- vessel_history
- Finding
- Correction: this hull is an SC-497-class 110-foot wooden submarine chaser, canonical designation SC-728 - not a PC-461-class 173-foot steel patrol craft. 'PC-728' was a brief commissioning designation (NavSource: commissioned PC-728 8 March 1943, reclassified SC-728 April 1943); all official listings (DANFS, NARA SL-44, 1 May 1945 fleet organization) file the vessel under SC-728.
- Verification
- verified
- Role
- correction
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1943
- Limitations
- The PC-728 designation interval is NavSource-sourced only; commissioning documents that would confirm it are not digitized. Record slug/file retains 'uss-pc-728-pc728' for batch identity; canonical hull is SC-728.
- Atlas source
- true
- Evidence ID
- ev-uss-pc-728-pc728-11