Evidence
11 evidence entries recorded; each entry has a stable permalink (#ev-1 … #ev-11).
-
[1]research packet 900-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-sc-513-sc513-pkt-900-packet-md
-
[2]DANFS (NHHC), SC-501 through SC-600 compilation page - one-line entry for SC-513 [nhhc_danfs]
- Locator
- NHHC DANFS 'SC-501 - SC-600' page, SC-513 paragraph (live page verified 2026-10-03)
- Finding type
- vessel_history
- Finding
- DANFS entry for this hull, verbatim: 'Built at Quincy Adams Yacht Yard, Inc., Quincy, Mass. Keel laid 5/16/41. Launched 1/20/42. Commissioned 3/28/42. Transferred to the Maritime Commission 10/21/46.'
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1941-1946
- Population
- Quincy Adams Yacht Yard construction trades (1941-42); crew (1942-45)
- Limitations
- Official ship-specific history but minimal - a one-line construction/disposal entry with no service narrative, no reclassification note, and no asbestos or material content. DANFS dates the Maritime Commission transfer 21 Oct 1946 (NavSource prints 1945 - see gaps).
- Atlas source
- true
- Evidence ID
- ev-uss-sc-513-01
-
[3]Annual Report of the Secretary of the Navy, 1941 (NHHC online transcription), table 'Ships under construction - Private yards [As of June 30, 1941]' [nhhc_danfs]
- Locator
- SecNav 1941 report, 'Ships under construction - Private yards - Continued [As of June 30, 1941]', SUBMARINE CHASERS block, PC513 row (live page verified 2026-10-03)
- Finding type
- historical_record
- Finding
- Official Navy documentation of this hull under construction: in the Secretary of the Navy's FY1941 annual report, the table 'Ships under construction - Private yards [As of June 30, 1941]' lists 'PC513' under the heading SUBMARINE CHASERS as building at 'Quincy Adams Yacht Yard, Inc.' (PC514 likewise 'Do.'). Confirms the hull was designated PC513 at contract/construction stage, was officially classed a submarine chaser, and was building at Quincy Adams as of mid-1941 - corroborating NavSource's builder and designation sequence and the research-QA finding that this hull carried the PC number while never being a PC-461-class vessel.
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1941 (as of June 30)
- Population
- Quincy Adams Yacht Yard construction trades (1941-42)
- Limitations
- Establishes builder, construction status, and PC513 designation as of 30 June 1941 only - not completion or service detail. No asbestos or material content.
- Atlas source
- true
- Evidence ID
- ev-uss-sc-513-02
-
[4]NavSource Online: Submarine Chaser Photo Archive, SC-513 (ex-PC-513) - designation timeline, commissioning officer, service summary, specifications, disposal [other_primary]
- Locator
- NavSource 12/150513.htm header block, timeline, specifications block, single photo (credit: Andrew Molsbee)
- Finding type
- vessel_history
- Finding
- NavSource timeline for this hull: laid down 16 May 1941 by the Quincy Adams Yacht Yard, Inc., Quincy, MA; launched 20 January 1942; commissioned PC-513 on 28 March 1942 under Lt.(jg) Andrew E. Ritchie, Jr., USNR; reclassified SC-513 in April 1943; 'operated in the Atlantic and Pacific'; decommissioned 5 October 1945; transferred to the Maritime Commission 21 October 1945 [sic - conflicts with DANFS 1946, see gaps]; stricken from the Naval Register 8 January 1946; Naval Vessel Register of 1 January 1949 lists transfer to the War Shipping Administration as October 1946; acquired in 1947 by Elza C. Mowry of San Gabriel, CA for use as a fishing boat and named Taurua; operated in 1949 under the French flag; fate unknown. Specifications: 148 t.; 110' 10" x 17' x 6' 6"; 15.6 kts.; complement 28; one 40mm mount, two .50 cal. machine guns, two depth charge projector 'Y Guns,' two depth charge tracks; two 880bhp General Motors 8-268A diesels, Snow and Knobstedt single reduction gear, two shafts.
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1941-1949 (timeline coverage)
- Population
- Quincy Adams Yacht Yard construction trades (1941-42); crew (1942-45); post-disposal civilian operators (1947-58)
- Limitations
- NavSource is a volunteer secondary compilation, not a primary registry - its milestone dates generally track DANFS/NVR but the Maritime Commission transfer year (1945) conflicts with DANFS (1946) and with the page's own NVR-1949 note (October 1946). 'Operated in the Atlantic and Pacific' is the sum of her documented service narrative. Contains no asbestos content. Page explicitly notes 'There is no DANFS history available for SC-513' - outdated: a one-line DANFS entry exists on the SC-501-600 compilation page (ev-01).
- Atlas source
- true
- Evidence ID
- ev-uss-sc-513-03
-
[5]shipbuildinghistory.com (Tim Colton), Quincy Adams Yacht Yard construction table, Quincy MA - SC 513 row and yard history [other_primary]
- Locator
- shipbuildinghistory.com/shipyards/yachtsmall/adams.htm, SC 513 table row and yard-header narrative (live page verified 2026-10-03)
- Finding type
- vessel_history
- Finding
- The standard U.S. shipbuilding reference's yard table lists: 'SC 513 | US Navy | Sub Chaser | 136d | 110 | 28-Mar-42 | Sold 1946 as Taurua, wrecked Kaukura Atoll 1958.' The table also documents Quincy Adams Yacht Yard's full SC production - 27 SC-type chasers (SC 513, SC 514, SC 628-629, SC 744-750, SC 1266-1275, SC 1474-1479) - and the yard's history: founded 1906 as F. D. Lawley, Inc., failed 1929, sold to Harold Noyes and renamed Quincy Adams Yacht Yard; located at 47 Palmer Street, Germantown, Quincy; site now the Clipper Marina condominiums.
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1941-1958
- Population
- Quincy Adams Yacht Yard construction trades (1941-42); post-disposal civilian operators incl. French Polynesia (1947-58)
- Limitations
- Specialist secondary compilation (Colton's yard tables), not a primary registry - but the only located source for the post-Navy fate (wrecked Kaukura Atoll 1958) where NavSource records 'fate unknown.' 'Sold 1946' conflicts with NavSource 'acquired in 1947' - flagged in gaps. Contains no asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-sc-513-04
-
[6]uboat.net Allied Warships of WWII, USS SC-513 (SC-513) - order date, commanding-officer list [other_primary]
- Locator
- uboat.net warship ID 8817 - 'Commands listed for USS SC-513' table (live page verified 2026-10-03)
- Finding type
- vessel_history
- Finding
- uboat.net warship entry for this hull: ordered 1 April 1941; laid down 16 May 1941; launched 20 January 1942; commissioned 28 March 1942; built by Quincy Adams Yacht Yard Inc., Quincy, MA. Commanding officers listed for the WWII period (all USNR): Andrew E. Ritchie (28 Mar 1942 - mid/late 1942); N. L. Lee, Jr. (mid/late 1942 - late 1942); Homer W. Searles (late 1942 - early/mid 1944); J. E. Ferguson, Jr. (early/mid 1944 - late 1944); J. L. Norbeck (late 1944 - 5 Oct 1945).
- Verification
- partial
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1942-1945
- Population
- Five successive USNR commanding officers; crew (1942-45)
- Limitations
- Specialist secondary compilation; the CO list is explicitly marked 'still working on this section' by uboat.net and is not cross-verified against Navy registers - date boundaries are approximate by design ('mid/late42', 'ear/mid44'). Carried for personnel context only; no asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-sc-513-05
-
[7]NavSource Submarine Chaser Photo Index (SC-497-class header) + splinterfleet.org (Theodore R. Treadwell, author of 'Splinter Fleet,' Naval Institute Press) - class construction totals and service pattern [other_primary]
- Locator
- navsource.net/arkiv/12/15idx.htm header narrative; splinterfleet.org home page (both live-verified 2026-10-03)
- Finding type
- vessel_history
- Finding
- Class context: NavSource index states 580 SC-497-class wood-hulled 110-foot submarine chasers were built during WWII, 142 for Allies under Lend-Lease, 70 later converted to Beach Control Craft (SCC); Treadwell's splinterfleet.org states 438 wooden SCs were launched and commissioned into U.S. service by roughly fifty small boatyards in 60-120 days apiece, crewed by some 40,000 men, with normal complement of 3 officers and 24 enlisted; missions: convoy escort, harbor-entrance patrol, amphibious-landing control craft, shallow-water minesweeping; only one SC received official credit for sinking an enemy submarine (SC-669 vs RO-107 off Kolombangara, 12 July 1943).
- Verification
- verified
- Role
- context
- Documentation level
- class_or_era
- Accessed
- 2026-10-03
- Study period
- 1941-1945
- Population
- ~40,000 SC sailors (class-level); ~50 boatyards (class-level)
- Limitations
- Class/era background only - the 580-built / 142 Lend-Lease / 438 US-commissioned figures reconcile (580 - 142 = 438) but neither source itemizes per-hull. Treadwell is the standard monograph authority on the type but the website is an author-maintained compilation, not an official record. Complement 27 (3+24) vs NavSource spec 28 - flagged in gaps. No asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-sc-513-06
-
[8]Era inference built on: NavSource specifications (wooden hull; two GM 8-268A diesels, reduction gear, two shafts - no steam plant); NavSource SC-497-class index; splinterfleet.org class construction context; GAO HRD-80-2 (see ev-08) [other_primary]
- Locator
- NavSource 12/150513.htm specifications block; NavSource class index; splinterfleet.org
- Finding type
- asbestos_application
- Finding
- A wooden-hulled diesel submarine chaser built 1941-42 sits inside the Navy's documented asbestos-use era; era-standard small-craft applications aboard a vessel of this type and period were engine and exhaust insulation, gaskets and valve packing, and electrical insulation in the machinery spaces. As a diesel vessel she carried no steam plant - the boiler/turbine lagging pathway of steam vessels does not apply, and wooden construction narrows the insulated scope further relative to steel combatants.
- Verification
- inferred
- Role
- supporting
- Documentation level
- class_or_era
- Accessed
- 2026-10-03
- Study period
- 1941-1958
- Population
- Quincy Adams Yacht Yard construction trades (1941-42); crew (1942-45); Maritime Commission/NDRF handling (1946-47); civilian operators (1947-58)
- Limitations
- Class/era inference only - no hull-specific insulation survey, material list, or work package located for SC-513. Names era-standard applications, not confirmed installed materials. No quantity. Product names are normalized era terms; no manufacturer attribution for this hull.
- Atlas source
- true
- Evidence ID
- ev-uss-sc-513-07
-
[9]GAO, Navy Efforts To Protect Workers From Asbestos Exposure, HRD-80-2 (Oct 18, 1979) [gao]
- Locator
- GAO product page HRD-80-2 (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 (1941-42) and service era (1942-45).
- 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 previously across batches) - content via product-page description.
- Atlas source
- true
- Evidence ID
- ev-uss-sc-513-08
-
[10]Batch-7888 search ledger (this record): DANFS compilation page; NavSource SC-513 page and class index; shipbuildinghistory.com Quincy Adams yard table; uboat.net CO list; splinterfleet.org; NVR (no entry); NIOSH HHE index (no report); NARA (JS-rendered / undigitized); CourtListener API v4; secondary web litigation sweep [other_primary]
- Locator
- search_ledger rows sl-uss-sc-513-01 through sl-uss-sc-513-18 (incl. variant -16b)
- Finding type
- historical_record
- Finding
- No qualifying ship-specific asbestos record located: no asbestos survey, abatement contract, hazmat disclosure, or verified litigation naming SC-513, PC-513, or Taurua was found in the public sources searched (see search_ledger). All four CourtListener base queries completed: 'SC-513' opinion (6 hits - all state supreme-court docket-number and Supreme Court Reporter page collisions), 'SC-513' docket (20 hits - all bankruptcy/MDL/civil noise), 'PC-513' opinion (2 hits - Indiana post-conviction docket collisions), 'PC-513' docket (28 hits - all bankruptcy/MDL/civil noise; asbestos-qualified variant returned 1 noise hit). No qualifying asbestos litigation located. Secondary web sweeps surfaced no qualifying case; the only 'asbestos aboard' material is law-firm marketing listicle content 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 - deck logs (RG 24, NARA College Park), Maritime Commission disposal files, and Quincy Adams yard records are undigitized leads. Does not establish that asbestos is or is not present; does not establish or defeat any claim of exposure or legal eligibility.
- Atlas source
- true
- Evidence ID
- ev-uss-sc-513-09
-
[11]HyperWar (Patrick Clancey), 'Ships of the U.S. Navy, 1940-1945' submarine-chaser roster - SC-511-517 grouping line vs DANFS per-hull dispositions [other_primary]
- Locator
- ibiblio.org/hyperwar/USN/ships/ships-sc.html, SC roster rows 'SC-511-517' (live page verified 2026-10-03); cross-checked against DANFS SC-501-600 per-hull entries
- Finding type
- historical_record
- Finding
- CORRECTION: HyperWar's secondary roster groups 'SC-511-517' as 'Lend-Lease to France' (commission dates 1942-44). The grouping is overbroad for this hull: DANFS per-hull entries show SC-513 transferred to the Maritime Commission 10/21/46 and SC-514 to the Maritime Commission 3/25/48 - only SC-515, SC-516, and SC-517 within the group actually went to France (10/10/44, 3/19/44, 3/16/44). SC-513 was never a Lend-Lease transfer; her French connection was post-disposal civilian operation under the French flag (1949) and eventual wreck in French Polynesia.
- Verification
- verified
- Role
- correction
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1944-1946 (transfer window)
- Limitations
- Corrects a circulating secondary-source aggregation, not a material claim. HyperWar itself is a respectable secondary compilation; the error is in the grouping row, not in its per-hull sourcing. No asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-sc-513-10