Evidence
10 evidence entries recorded; each entry has a stable permalink (#ev-1 … #ev-10).
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[1]research packet 925-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-689-sc689-pkt-925-packet-md
-
[2]NavSource Online: Submarine Chaser Photo Archive, SC-689 (ex-PC-689) - designation timeline, specifications block, commanding-officer list, 'no DANFS history' note (live .net URL verified 2026-10-03) [other_primary]
- Locator
- NavSource 12/150689.htm - header designation line, timeline block, specifications block, History Addendum (CO list)
- Finding type
- vessel_history
- Finding
- NavSource timeline for this hull: laid down 27 April 1942 by Annapolis Yacht Yard Inc., Annapolis, MD; launched 15 August 1942; commissioned PC-689 on 2 November 1942; reclassified SC-689 in April 1943; decommissioned 24 January 1946; struck from the Naval Register 7 February 1946; transferred to the Maritime Commission 24 September 1946; fate unknown. Spec block: 148 t.; 110'10" length; 17' beam; 6'6" draft; 21 kts.; complement 28; armament one 40mm gun mount, two .50 cal. machine guns, two Y-gun depth-charge projectors, two depth-charge tracks; propulsion two 1,540bhp General Motors (Electro-Motive Div.) 16-184A diesel engines, two shafts. Call sign Nan-William-Yoke-Victor. No image of SC-689 available; 'There is no DANFS history available for SC-689' (no narrative DANFS entry - see ev-02 for the appendix line item). Commanding officers (list marked incomplete): LTJG Robert L. O'Connor USCG (9 Jun 1944); LTJG Edward F. Cotter USCG (24 Aug 1944); LTJG D. L. Courtois USCG (14 Apr 1945); LTJG Daniel J. Lancaster USCG (22 Jun 1945).
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1942-1946
- Population
- Annapolis Yacht Yard construction trades (1942); Coast Guard crew, complement 28 (1942-46)
- Limitations
- NavSource is a volunteer secondary compilation, not a primary registry - milestone dates corroborated against DANFS appendix (ev-02) and the USCG Escorts history (ev-03) agree on the four dates all three record. Contains no asbestos content. NavSource's transcription of the USCG history prints 'SC-680' where the primary text reads SC-688 (ev-03). Spec-block displacement (148 t.) conflicts with builder's-list (136 t.) and class-literature (~95-98 t.) figures - different conventions, unresolved.
- Atlas source
- true
- Evidence ID
- ev-uss-sc-689-sc689-01
-
[3]DANFS Vol. VI appendix, Submarine Chasers SC-601 through SC-700 (Naval Historical Center page; ARCHIVED Wayback capture 2005-01-14 - live history.navy.mil URL is dead; no modern NHHC page exists for this hull, confirmed 404 on 2026-10-03) [nhhc_danfs]
- Locator
- Wayback capture 2005-01-14 of history.navy.mil/danfs/sc1/sc-601-sc-700v1.htm, SC-689 line item
- Finding type
- vessel_history
- Finding
- DANFS appendix line entry for SC-689: 'Built at Annapolis Yacht Yard Inc., Annapolis, Md. Keel laid 4/27/42. Launched 8/15/42. Commissioned 11/2/42. Transferred to Maritime Commission 9/24/46.' Confirms builder, keel-laying, launch, commissioning, and Maritime Commission transfer dates.
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1942-1946
- Population
- Annapolis Yacht Yard construction trades (1942)
- Limitations
- Bare-bones appendix line, not a narrative DANFS entry (consistent with NavSource's 'no DANFS history' note - no full entry exists). Does not record the PC-689 commissioning designation, the April 1943 reclassification, the decommissioning (1946-01-24), or the Naval Register strike (1946-02-07) - those come from NavSource. No asbestos content. Archived copy cited because the live NHHC page is dead; presented as archived, not live.
- Atlas source
- true
- Evidence ID
- ev-uss-sc-689-sc689-02
-
[4]U.S. Coast Guard, 'The Coast Guard at War: Transports & Escorts, Vol. I - Escorts' (Historical Section, Public Information Division, 1 Mar 1949), Part II Ships' Histories, p. 173 - SC-689 entry (HyperWar transcription, live verified 2026-10-03); corroborated by U.S. Coast Guard Historian's Office cutter roster listing 'SC-689' (history.uscg.mil, index entry) [other_primary]
- Locator
- USCG-V1-2.html, anchor '#sc-689', printed page 173; USCG Historian cutter roster (history.uscg.mil/Browse-by-Topic/Assets/Water/All/Cutters-65-ft-or-greater/)
- Finding type
- vessel_history
- Finding
- The official Coast Guard war history for this hull: 'The USS SC-689 was commissioned November 2, 1942, and a Coast Guard crew placed on board.' Training exercises at Casco Bay, Maine, 31 Dec 1942; departed Casco Bay 25 Jan 1943 for Argentia, Newfoundland, on patrol until 28 Apr 1943; departed with five other escorts for St. John's and on 1 May 1943 for Greenland, arriving Gronne Dal 6 May, departing 10 May with other escorts to search for a reported submarine; patrol duty in Arsuk Fjord, relieving SC-688 and SC-705 and other vessels, until 31 Dec 1943; Greenland patrol continued until 1 May 1944, then departed with four escorts for Boston via Argentia, arriving 12 May 1944; departed for Portland training exercises 16 Jun 1944; departed Portland for Greenland 24 Jun 1944, mooring Gronne Dal 14 Jul 1944; patrol until 8 Sep 1944, then departed for St. John's with USCGC Mohawk (WPG-78) and SC-705, the Mohawk towing HMT Strathella; departed St. John's 18 Sep 1944 with SC-705 and SC-688 for Boston via Argentia, arriving 24 Sep; after 20 days' availability at Boston, went with SC-705 to Navy Section Base, Newport, R.I., as a target vessel until 1 Nov 1944; then to Coast Guard Patrol Base, Port Everglades, Fla., laying sono-buoys and retrieving dummy projectiles in A/S operations through end of 1944. 'The SC-689 was decommissioned January 24, 1946.' She was Coast Guard-manned throughout her U.S. career and is listed in the USCG Historian's Office cutter roster as 'SC-689'.
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1942-1946
- Population
- Coast Guard crew (complement 28); Greenland Patrol bases and consorts (SC-688, SC-705, USCGC Mohawk, HMT Strathella); Navy Section Base Newport target-duty personnel; CG Patrol Base Port Everglades personnel
- Limitations
- Primary official history but operational only - documents patrol/target/training service; no asbestos, material, construction-detail, or casualty content. The '20 days availability at Boston' does not name the performing activity (Boston Naval Shipyard not stated). The Greenland Patrol monograph (USCG at War Vol. II) could not be fetched this session (media.defense.gov blocks automated fetch; >50MiB exceeds firecrawl limit; not transcribed on HyperWar) - context-level lead only. CO names come from NavSource's secondary addendum, marked incomplete there.
- Atlas source
- true
- Evidence ID
- ev-uss-sc-689-sc689-03
-
[5]ShipbuildingHistory.com (Tim Colton), 'John Trumpy & Sons, formerly Annapolis Yacht Yard and Chance Marine Construction, Annapolis MD' - yard history and hull build table [other_primary]
- Locator
- trumpymd.htm - 'Built by Annapolis Yacht Yard' table, SC 689 row; yard-history paragraph
- Finding type
- historical_record
- Finding
- The builder's-table line for this hull: 'SC 689 | US Navy | Sub Chaser | 136 (tons) | 110 (ft) | delivered 2-Nov-42 | Sold 1946'. Yard history: Chance Marine Construction (est. 1912, Eastport section of Annapolis) failed in the Depression and was resold to Annapolis Yacht Yard, Inc., owned by the Nelson-Reid naval architects/yacht brokers; 'Under AYY's ownership, the yard grew still further and was a major builder of sub chasers and torpedo boats'; sold to John Trumpy in 1947 after Chris Nelson's death; yard closed end of 1973. The table also lists her yard sisters - SC 688 (sold 1946), SC 690 and SC 691 (to Free French 1944 as CH-106 and CH-132), and the SC 1309-1313+ series.
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1942-1946
- Population
- Annapolis Yacht Yard construction trades (1942)
- Limitations
- Reputable secondary reference compiled from merchant-vessel and yard records, not an official registry - corroborates build/delivery dates and adds 'Sold 1946' (vs NavSource 'fate unknown'; the ultimate purchaser and career are untracked). Tonnage (136) conflicts with NavSource spec block (148 t.) and class literature (~95-98 t.) - different conventions, unresolved. No asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-sc-689-sc689-04
-
[6]NavSource Online: Submarine Chaser (SC) Index - SC-497 class summary and hull listings [other_primary]
- Locator
- NavSource 12/15idx.htm - class header paragraph; 12/01idx.htm - PC index ex-PC listing block
- Finding type
- vessel_history
- Finding
- Class context for this hull: 'Five hundred eighty SC-497 Class wood-hulled, 110-foot Submarine Chasers (SC) were built during World War II, with 142 of these being used by our Allies under the Lend-Lease Program.' The type descends from the WWI SC-1-class wooden 'Splinter Fleet'; designed for off-shore patrol and anti-submarine warfare; also used in amphibious landings; 70 converted to Beach Control Craft as Control Submarine Chasers (SCC). The index carries this hull as 'SC-689 ex-PC-689' inside a block of ex-PC-designated SC hulls (SC-673 through SC-697+ all shown ex-PC).
- Verification
- verified
- Role
- context
- Documentation level
- class_or_era
- Accessed
- 2026-10-03
- Study period
- 1941-1944 (class build window)
- Population
- SC-497-class crews and construction yards class-wide (context)
- Limitations
- Class-level framing only - establishes type, material (wooden hull), and production scale, not anything specific to this hull's materials. Built-total conflicts across references (580 per NavSource; 438 per secondary class literature) - unresolved, in gaps. No asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-sc-689-sc689-05
-
[7]NavSource Online: Patrol Craft (PC) Index - PC-461-class series statement and ex-PC designation block [other_primary]
- Locator
- NavSource 12/01idx.htm - PC-461-class series paragraph and ex-PC listing block; cross-checked against ev-01 timeline
- Finding type
- historical_record
- Finding
- CORRECTION of the 'PC-689' framing: NavSource's own PC index states the steel-hulled PC-461 class was built in three series - 'PC-461 to PC-496 (36), PC-542 to PC-627 (86), PC-776 to PC-826 (51), PC-1077 to PC-1265 (189)' - 362 WWII-built PCs. The number PC-689 falls in the gap between the PC-627 and PC-776 series: no PC-461-class patrol craft ever bore PC-689. Instead the PC index lists 'SC-689 ex-PC-689' among a systematic block of SC-497-class hulls that initially carried PC designations (SC-673 through at least SC-697, all shown ex-PC). Per NavSource's ship page she was commissioned under the PC-689 designation 2 November 1942 and reclassified SC-689 in April 1943 - an SC-497-class submarine-chaser hull throughout, never a PC-class vessel.
- Verification
- verified
- Role
- correction
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1942-1943 (designation window)
- Limitations
- Corrects a designation artifact, not a material claim. NavSource asserts commissioning under the PC designation; the DANFS appendix (ev-02) lists the hull under SC-689 with no PC phase - the precise administrative sequence (ordered-as-PC vs commissioned-as-PC) is unresolved. No asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-sc-689-sc689-06
-
[8]Era inference built on: NavSource spec block (2 x GM EMD 16-184A diesels, wooden hull, 110 ft, 148 t.); NavSource class index (SC-497 class, wood-hulled 110-ft type); GAO HRD-80-2 full text (see ev-08) enumerating Navy shipboard asbestos applications - piping-system gaskets and packing, deck floor tiling, electric cabling and resistors, galley-range cabling, brakes and clutches [other_primary]
- Locator
- ev-01 spec block; ev-05 class index; GAO product page HRD-80-2
- Finding type
- asbestos_application
- Finding
- A wooden-hulled diesel submarine chaser built in 1942 sits inside the Navy's documented asbestos-use era; era-standard applications aboard a patrol craft of this type and period, matching the GAO's enumerated Navy shipboard uses (ev-08), were diesel-exhaust lagging, thermal and acoustic insulation in machinery and accommodation spaces, piping-system gaskets and valve packing, deck tiling, and electrical insulation/cabling in a small confined hull volume. As a diesel-driven wooden hull she carried no steam plant - the boiler/turbine lagging pathway of steam vessels does not apply, and the material load was far below that of a steam combatant.
- Verification
- inferred
- Role
- supporting
- Documentation level
- class_or_era
- Accessed
- 2026-10-03
- Study period
- 1942-1946
- Population
- Annapolis Yacht Yard construction trades (1942); Coast Guard crew, complement 28 (1942-46); Boston availability trades (Oct 1944, performing activity unlocated)
- Limitations
- Class/era inference only - no hull-specific insulation survey, material list, or work package located for SC-689. Names era-standard applications, not confirmed installed materials. No quantity. Product names are normalized era terms; no manufacturer attribution for this hull. Wooden-hulled small craft had materially lower asbestos loadings than steel steam vessels - the inference is weaker here than for steam combatants.
- Atlas source
- true
- Evidence ID
- ev-uss-sc-689-sc689-07
-
[9]GAO, Navy Efforts To Protect Workers From Asbestos Exposure, HRD-80-2 (Oct 18, 1979) - full report text retrieved this session via the gao.gov /assets/ PDF link [gao]
- Locator
- GAO HRD-80-2 full text - Navy-policy section (spec changes 1971/1973, Oct 1975 policy, May 1978 latest deliveries) and asbestos-applications enumeration (gaskets/packing, deck tile, cabling/resistors, brakes/clutches)
- Finding type
- gov_survey
- Finding
- GAO documented the Navy's asbestos use aboard ships across this hull's era: product specifications for thermal insulation were changed 'as early as 1971' toward low/no-asbestos and to asbestos-free materials 'by late 1973', the formal elimination policy issued October 1975, yet 'some ships were delivered with asbestos insulation as late as May 1978.' Beyond thermal insulation, the report lists Navy shipboard asbestos applications directly relevant to a patrol craft of this type: piping-system gaskets and packing, deck floor tiling, electric cabling and resistors in Navy electronic equipment, galley-range cabling, and equipment brakes and clutches - 'nearly impossible to build a Navy ship free of the mineral.' Fieldwork yards were Long Beach and Norfolk Naval Shipyards.
- Verification
- verified
- Role
- context
- Documentation level
- class_or_era
- Accessed
- 2026-10-03
- Study period
- 1979 (report); Navy asbestos-use era through 1978 deliveries
- Population
- Navy shipyard workers; asbestos program review (Long Beach and Norfolk Naval Shipyards fieldwork)
- Limitations
- Program-level documentation; supports era context only, not any fact specific to this hull - SC-689 is not named and no SC-class hull is in the report's ship tables. The gao.gov product page blocks plain automated fetch (HTTP 403, standing defect), but the report PDF at gao.gov/assets/hrd-80-2.pdf retrieved live via firecrawl on 2026-10-03 - quotations verified against the full text.
- Atlas source
- true
- Evidence ID
- ev-uss-sc-689-sc689-08
-
[10]Batch-8063 search ledger (this record): DANFS appendix via Wayback; NavSource ship/class/PC-index pages; USCG Transports & Escorts p.173 via HyperWar; USCG Historian cutter roster; shipbuildinghistory.com yard table; NVR (no entry); CourtListener authenticated API v4 (4 base queries); secondary web litigation sweep [other_primary]
- Locator
- search_ledger rows sl-uss-sc-689-sc689-01 through -16
- Finding type
- historical_record
- Finding
- No qualifying ship-specific asbestos record located: no asbestos survey, abatement contract, hazmat disclosure, or docketed litigation naming SC-689 / PC-689 was found in the public sources searched. CourtListener authenticated API results (2026-10-03), all four base queries completed and classified: 'USS SC-689' opinion count=0; 'USS SC-689' docket count=0; 'SC-689' opinion count=12, ALL name collisions (Kentucky Supreme Court x8, Alabama Supreme Court, Georgia appellate decisions - 'SC-689' matches docket/citation strings, never the vessel); 'SC-689' docket count=18, ALL name collisions (federal/state bankruptcy dockets, D.D.C. matters, FEMA-trailer formaldehyde MDL - 'SC-689' matches docket-item/citation strings, never the vessel). Zero qualifying asbestos litigation; no variant queries warranted (both hull-number queries under the 20-result cap). The only 'asbestos aboard' material surfaced by secondary web sweeps is law-firm marketing content asserting asbestos across SC-497-class/ships lists 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 - it establishes only that no public record names this hull. A wooden 110-ft patrol craft had a low material load and a crew of 28, so the litigation surface is small in any event. Deck logs (RG 24), AYY work packages, and Maritime Commission disposal records are undigitized leads. Does not establish or defeat any claim of exposure or legal eligibility.
- Atlas source
- true
- Evidence ID
- ev-uss-sc-689-sc689-09