Evidence
11 evidence entries recorded; each entry has a stable permalink (#ev-1 … #ev-11).
-
[1]research packet 1022-packet.md (2 sources cited) [other_primary]
- Finding type
- vessel_history
- Finding
- Identity packet verdict: VERIFIED
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Evidence ID
- uss-dart-yfb308-pkt-1022-packet-md
-
[2]DANFS, Dart II (YFB-308) - NHHC live page verified 2026-10-04 [nhhc_danfs]
- Locator
- NHHC DANFS page dart-ii.html, entry body
- Finding type
- vessel_history
- Finding
- DANFS text, verbatim: 'The second Dart (YFB-308), a ferry launch, was attached to the Mare Island Navy Yard from 1900 to 1930. She was employed as a ferry between the Navy Yard and Vallejo, Calif., and also as a stand-by fire boat. On 20 September 1930 she was transferred to the Department of Commerce.' Headnote: 'Former name retained.' The Dart II ordinal distinguishes her from the Civil War-era Dart (1861).
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- 1900-1930
- Population
- Mare Island Navy Yard ferry-service crew and passengers (1900-1930)
- Limitations
- Short DANFS entry covering identity and service summary only; no construction date, machinery, material, complement, or disposal details. The Department of Commerce housed the US Lighthouse Service - the NavSource/USCG rows carry the downstream Locust service detail. No asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-dart-yfb308-01
-
[3]NavSource Online: Service Ship Photo Archive, Dart (YFB-308) - milestone timeline, specifications, photo captions (live navsource.net page verified 2026-10-04; navsource.org domain is dead) [other_primary]
- Locator
- NavSource 14/350308.htm header block, specifications block, photo caption series (NH 70606, NH 85733, NH 54643, NARA 19-N-19-24-5, Mare Island Navy Yard photos 379 et al., Vallejo Naval and Historical Museum collection)
- Finding type
- vessel_history
- Finding
- NavSource timeline for this hull: built by Mare Island Navy Yard, Vallejo CA; laid down 6 April 1899; launched 28 February 1900, sponsor Miss Margaret Fechteler (daughter of Lieutenant Augustus F. Fechteler, aide to Rear Admiral Louis Kempff, Commandant of Mare Island); built at a cost of $15,000; placed in service at Mare Island as Dart 9 April 1900; designated Yard Ferryboat (YFB-308) 17 July 1920; placed out of service 20 September 1930; transferred to Department of Commerce for service with US Lighthouse Service; placed in service as buoy boat Locust, 1931; assigned to 18th Lighthouse District at San Francisco 1931-1954; renamed Locust (CGB-8) with merger of USLHS into US Coast Guard, 1939; numbered CG-72013-D circa 1943; decommissioned 30 December 1954; final disposition unknown. Specifications: length 71'10", beam 16'7"; displacement, draft, speed, complement, propulsion all listed 'unknown'; armament none. Photo captions further document: construction on the Mare Island building ways 1899, christening and launching 28 Feb 1900, Vallejo-side ferry landing 1 Aug 1904, presence with Pike (Submarine No. 6) at Mare Island Drydock No. 1 9 May 1905, and a circa-1922-23 Mare Island tug/ferry basin photo showing Dart alongside fellow yard ferries Leslie (YFB-7) with Navigator (YT-39), Lively (YT-14) and Vigilant (YT-25).
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- 1899-1954
- Population
- Mare Island construction trades (1899-1900); ferry crew and yard workforce passengers (1900-1930); USLHS/USCG buoy-boat crew (1931-1954)
- Limitations
- Volunteer secondary compilation, not a primary registry - but its milestone dates are consistent with DANFS and the USCG Historian page where they overlap, and its dimensions match the official 1922 Navy Ships' Data table (ev-03). Contains no asbestos content; propulsion listed 'unknown' (photographic record supplies steam - see ev-05). The 17 July 1920 designation date corresponds to the Navy-wide hull classification scheme effective that date, not a hull-specific event.
- Atlas source
- true
- Evidence ID
- ev-uss-dart-yfb308-02
-
[4]Navy Department, Ships' Data, U.S. Naval Vessels (edition of 1 July 1922), p. 302 'Ferryboats and Launches (YFB)' table and p. 319 'Allocation of District Craft - Twelfth Naval District' (Google Books scan hosted at shipscribe.com; OCR-inspected this session) [other_primary]
- Locator
- Ships' Data 1922, p. 302 (YFB table row YFB308), p. 319 (12th District allocation list); PDF page images 307 and 324 of the shipscribe scan
- Finding type
- historical_record
- Finding
- The official Navy data book lists 'YFB308 DART ... 71 ft 10 in x 16 ft 7 in, Steel str. [steel structure], 12th dist., Navy yard, Mare Island, 1900' in the Ferryboats and Launches table (p. 302), and allocates 'Ferry boats and launches: Admiral Glass, Castro, Dart, Leslie' to the Twelfth Naval District (p. 319). STEEL STRUCTURE per the official Navy record - correcting the USCG Historian page's 'iron-hulled' description (ev-04). The same table's note states 'YFB numbers above 11 are identical with S.P. and launch numbers originally assigned' - her 308 predates the 1920 designation as a section-patrol/launch number.
- Verification
- verified
- Role
- correction
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- as of 1922-07-01
- Population
- 12th Naval District ferry crew and passengers
- Limitations
- Primary government data book: authoritative for identity, dimensions, hull material, and district allocation as of July 1922. The ferry table carries no propulsion, tonnage, complement, or machinery columns for this entry - steam plant is established photographically (ev-05), not here. OCR of a scanned page; figures verified against NavSource dimensions. No asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-dart-yfb308-03
-
[5]U.S. Coast Guard Historian's Office, 'Locust, 1931' cutter file (live page verified 2026-10-04; source cited: Douglas Peterson, United States Lighthouse Service Tenders 1840-1939) [other_primary]
- Locator
- history.uscg.mil Locust 1931 article body and data block
- Finding type
- vessel_history
- Finding
- The official USCG cutter file for Locust (CG-72013D) states: 'The iron-hulled Locust, originally launched in 1895, was acquired by the U.S. Lighthouse Service in 1931 for use as a buoy boat. She was assigned to the 18th Lighthouse District where she served until she was decommissioned in 1954. When the Lighthouse Service merged with the Coast Guard she was eventually given the designation CG-72013D.' Listed length 72'. CORRECTION FLAG: two origin details conflict with Navy primary records - 'launched 1895' vs documented laydown 6 Apr 1899 and launch 28 Feb 1900 (NavSource/DANFS), and 'iron-hulled' vs 'Steel str.' in the Navy's own 1922 Ships' Data (ev-03). The ex-Dart identification itself is secure: the CG-72013-D designation, 72-ft length, 18th District San Francisco assignment, and 1931-1954 window all match NavSource's Dart-to-Locust timeline, and the USCG holds a photograph of ex-Dart as Locust (NavSource caption).
- Verification
- verified
- Role
- correction
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- 1931-1954
- Population
- USLHS/USCG buoy-boat crew, 18th Lighthouse District (1931-1954)
- Limitations
- Downstream-agency record: reliable for the buoy-boat service window and designation, but its origin data (1895 launch, iron hull) conflicts with Navy primary records and is not adopted here - likely a Lighthouse-register transcription error or conflation; the USLHS Digital Archive repeats 'Year Built: 1895.' Machinery, complement, and disposition fields are blank on the USCG page. No asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-dart-yfb308-04
-
[6]Mare Island Navy Yard Public Works photo no. 379 (1 Aug 1904, 'Landing Float Virginia St. Vallejo side') and broadside Mare Island photo c.1904 - Dart shown with a single tall vertical boiler funnel; plus NHHC photos NH 70606 (building ways 1899), NH 85733 (ferry service pre-WWI), NH 54643 (underway 1918), NARA 19-N-19-24-5 (underway c.1900) via NavSource-hosted images [other_primary]
- Locator
- NavSource-hosted photo files 1435030806.jpg (Mare Island Navy Yard photo 379, 8/1/04), 1435030804.jpg (broadside c.1904), 1435030810.jpg (NH 54643, 1918), 1435030801/2/3 (launch series), 1435030809 (NH 85733)
- Finding type
- historical_record
- Finding
- Period photographs of this hull show a steam plant: a single tall vertical smokestack/boiler funnel amidships-forward of the cabin structure is plainly visible in the 1904 broadside and landing-float views and in the underway images. This establishes that Dart was a steam-powered ferry launch - the asbestos-relevant systems aboard (boiler lagging, steam-line insulation, gaskets, packing) are those of a small steam craft of the turn of the century.
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- 1900-1918 (photo dates)
- Population
- Engine/boiler crew aboard the ferry (1900-1930; USLHS/USCG 1931-1954)
- Limitations
- Photographic evidence only: a visible funnel documents steam propulsion but gives no boiler type, engine type, horsepower, or insulation material. No machinery schedule or specification document for this hull was located in consulted sources (NavSource propulsion field reads 'unknown'; Ships' Data ferry table has no machinery column for this row).
- Atlas source
- true
- Evidence ID
- ev-uss-dart-yfb308-05
-
[7]Era inference built on: DANFS 'ferry launch' designation; NavSource timeline; Ships' Data 1922 (steel structure, Mare Island 1900); period photographs (steam funnel); general period practice for lagging small steam craft [other_primary]
- Locator
- DANFS entry; NavSource specifications; Ships' Data 1922 p. 302; photo series (ev-05)
- Finding type
- asbestos_application
- Finding
- A 72-ft steam ferry launch built 1899-1900 sits at the edge of the asbestos era rather than firmly inside it: period steam-craft lagging practice used composition insulation - magnesia sectional blocks, hair felt, and asbestos-bound compositions were all in contemporaneous use - and gaskets and valve/stem packing of the period commonly contained asbestos fiber. Her Navy window (1900-1930) largely precedes the Navy's documented heavy asbestos use; her buoy-boat window under USLHS/USCG (1931-1954) falls inside the era when asbestos marine insulation was standard. Whether this specific hull ever carried asbestos is undocumentable from located sources - the honest characterization is 'indeterminate,' weaker than the mid-century era inference available for WWII hulls.
- Verification
- inferred
- Role
- supporting
- Documentation level
- class_or_era
- Accessed
- 2026-10-04
- Study period
- 1899-1954
- Population
- Mare Island construction trades (1899-1900); engineering crew tending boiler/steam plant (1900-1954); any yard or depot trades performing machinery renewals (undocumented)
- Limitations
- Era inference only - no hull-specific insulation survey, machinery schedule, work package, or material list located. Names era-standard possibilities, not confirmed installed materials. No quantity. No manufacturer attribution possible for this hull.
- Atlas source
- true
- Evidence ID
- ev-uss-dart-yfb308-06
-
[8]Atlas shipyards.json yard record (shipyard-exposure-map dataset) for Mare Island Naval Shipyard (documented products: Unibestos, Marinite boards, Transite pipes, Kaylo, Careytemp, Gold Bond, Super 66, pump and valve packing, gaskets, bonnet insulation, refractory materials) resting on: Final EIS/EIR for Disposal and Reuse of MINSY (Apr 1998, DTIC ADA344388/89); Collins v. Plant Insulation Co., 185 Cal. App. 4th 260 (2010) - welder at Hunters Point 1960-73 and Mare Island 1976-94 [other_primary]
- Locator
- shipyards.json yard_id mare-island-naval-shipyard (ev-mare-island-01, -02); Collins v. Plant Insulation Co., 185 Cal. App. 4th 260; DTIC ADA122347 (blocked)
- Finding type
- gov_survey
- Finding
- The yard that built this hull has documented asbestos-era records: the 1998 Navy/City of Vallejo EIS/EIR for MINSY disposal documents asbestos-containing material in shipyard buildings, and Collins v. Plant Insulation Co. documents a Mare Island welder's mesothelioma (exposure window 1976-94, appellate record). Separately, a NAVSEA Manufacturing Technology Program report on shipboard asbestos-insulation removal references Mare Island Naval Shipyard (Code 380) (DTIC ADA122347 - located in search results but full text blocked this session, snippet-only verification).
- Verification
- verified
- Role
- context
- Documentation level
- class_or_era
- Accessed
- 2026-10-04
- Study period
- 1960-1998 (documentation windows); hull present 1899-1930
- Population
- Mare Island yard trades (documented windows 1960-1998; Dart-era trades 1899-1930 not covered)
- Limitations
- Yard-level documentation that ALL postdates this hull's Navy tenure: Dart left Mare Island Navy service in 1930, decades before the documented asbestos findings (1998 EIS, 1976-94 Collins window, c.1980 NAVSEA report). It documents the yard's asbestos era, not materials aboard or worked on this hull. The Collins opinion is an appellate record of a merits verdict at yard level - not hull evidence.
- Atlas source
- true
- Evidence ID
- ev-uss-dart-yfb308-07
-
[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 (live-verified 2026-10-04)
- Finding type
- gov_survey
- Finding
- GAO documented that the Navy used asbestos insulation extensively aboard ships and that the 1975 policy was to remove/replace only damaged insulation, modified in 1979 to selective replacement in high-maintenance areas; fieldwork at Long Beach and Norfolk Naval Shipyards. This frames the Navy's asbestos era (heavy use through the early 1970s) within which this hull's USLHS/USCG service window (1931-1954) fell, though her Navy window (1900-1930) preceded the documented heavy-use period.
- Verification
- verified
- Role
- context
- Documentation level
- class_or_era
- Accessed
- 2026-10-04
- 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 - the report addresses 1970s Navy ships and yards, a half-century removed from a 1900 ferry. Full text not retrieved this session (product-page description used).
- Atlas source
- true
- Evidence ID
- ev-uss-dart-yfb308-08
-
[10]Navy Department, Ships' Data, U.S. Naval Vessels (edition of 1 July 1931), Ferryboats and Launches table pp. 234-235 (Google Books scan hosted at shipscribe.com; OCR-inspected this session) [other_primary]
- Locator
- Ships' Data 1931, pp. 234-235 (YFB table); PDF page images 256-257 of the shipscribe scan
- Finding type
- historical_record
- Finding
- Dart (YFB-308) does not appear in the ferryboats table of the data book edition dated 1 July 1931 - consistent with her documented 20 September 1930 transfer to the Department of Commerce. All four 12th District Mare Island ferries from the 1922 allocation (Admiral Glass, Castro, Dart, Leslie) are absent from the 1931 table, which lists thirteen YFB entries across pp. 234-235; the table now carries a 'Horse-power' column (sister craft of similar size show 150-600 I.H.P.).
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- as of 1931-07-01
- Limitations
- Absence-from-roster corroboration, not a positive transfer record - the table reflects inventory status at July 1931 and small-craft attrition between editions is common; the transfer itself is documented by DANFS/NavSource. The sister-craft horsepower figures cannot be transferred to Dart. No asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-dart-yfb308-09
-
[11]Batch-8741 search ledger (this record): live NHHC DANFS dart-ii page; NavSource 14/350308 + photo series; Navy Department Ships' Data 1922 and 1931 (shipscribe scans, OCR); USCG Historian Locust 1931 cutter file; USLHS Digital Archive vessel record 4622; NVR (no entry - pre-1987 disposal); GAO HRD-80-2 product page; NARA catalog API (unstable); DTIC ADA122347 (blocked); CourtListener (pacing-limited) [other_primary]
- Locator
- search_ledger rows sl-uss-dart-yfb308-01 through -12
- Finding type
- historical_record
- Finding
- No qualifying ship-specific asbestos record located: no asbestos survey, insulation or machinery schedule, abatement contract, hazmat disclosure, or verified litigation naming USS Dart (YFB-308) or her later identity Locust (CGB-8/CG-72013-D) was found in the public sources searched (see search_ledger). CAVEAT: CourtListener's fleet-paced quota was momentarily spent at search time this session - litigation status is an open gap pending retry, not a negative result. Secondary web sweeps surfaced no qualifying case and no asbestos marketing content specific to this hull (unlike larger vessels, YFB-308 does not appear on the common law-firm listicle pages).
- Verification
- verified
- Role
- negative_finding
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- 2026-10-04
- Limitations
- Absence of a located public record does not prove absence of asbestos aboard; equally, for a 1900 hull it does not prove presence - the era evidence is genuinely indeterminate (ev-06). The litigation repository search is an open gap (pace-limited, re-run pending). Deck logs, Mare Island work orders, and USLHS/USCG maintenance records are undigitized leads. Does not establish or defeat any claim of exposure or legal eligibility.
- Atlas source
- true
- Evidence ID
- ev-uss-dart-yfb308-10
