Evidence
10 evidence entries recorded; each entry has a stable permalink (#ev-1 … #ev-10).
-
[1]research packet mj-packet.md (5 sources cited) [other_primary]
- Finding type
- vessel_history
- Finding
- Identity packet verdict: VERIFIED — real identity: USS Captain Dud (Id. No. 3507; later USS YD-43); type: floating derrick / floating crane
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Evidence ID
- uss-captain-dud-id3507-pkt-mj-packet-md
-
[2]Naval Historical Center Online Library of Selected Images, 'US Navy Ships by Hull Number: ID #3500 through ID #3599' (verbatim HyperWar/ibiblio mirror of the official NHHC index page) [nhhc_danfs]
- Locator
- Index list, ID # 3507 entry
- Finding type
- vessel_history
- Finding
- NHHC hull-number index entry reads: 'ID # 3507: Captain Dud. Floating derrick. USN: Captain Dud, ca.1918-ca.1956. Renamed YD-43. No image is available, or known to exist.' This is the extent of NHHC coverage - no DANFS entry exists for this craft (NHHC site returned 404 for a dedicated page on 2026-09-29; NavSource also notes 'There is no DANFS history available for YD-43').
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-09-29
- Study period
- 1918-1956
- Limitations
- Index entry only - establishes identity, type, approximate service span (ca.1918-ca.1956), and the ID-3507 to YD-43 alias; dates are circa dates and the index gives no build, station, machinery, or materials detail. No asbestos-related content.
- Atlas source
- true
- Evidence ID
- ev-uss-captain-dud-id3507-01
-
[3]U.S. Department of Commerce, Bureau of Navigation, Annual List of Merchant Vessels of the United States, year ended June 30, 1916 (48th annual list; HyperWar/ibiblio scan), unrigged vessels section [other_primary]
- Locator
- MVUS 1916, Part III unrigged vessels, printed p. 341 (PDF p. 349), ON 160075 row
- Finding type
- historical_record
- Finding
- The federal merchant-vessel register lists 'Capt. Dud', U.S. Official No. 160075, classed among unrigged vessels (scow class carried by ditto), 97 gross tons / 97 net tons, crew 5, built 1915 at New London, Conn., home port (permanent documentation) New Haven, Conn. - the official documentation record of this hull's commercial identity before Navy acquisition.
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Accessed
- 2026-09-29
- Study period
- 1916
- Population
- Commercial derrick crew of 5 (documentation figure, 1916)
- Limitations
- Establishes documented identity, tonnage, a five-man crew, and a 1915 build recorded at New London, CT - the latter conflicts with secondary sources crediting S. Flory, Bangor, PA as builder (see gaps); the register does not name the builder. No machinery or materials detail; no asbestos-related content. Entry confirmed by reading the scanned table page (p. 341 of the volume) directly, not OCR alone.
- Atlas source
- true
- Evidence ID
- ev-uss-captain-dud-id3507-02
-
[4]NavSource Online, Identification Numbered Vessel Photo Archive, 'YD-43 ex-Captain Dud (ID 3507)' [other_primary]
- Locator
- NavSource archive page 12/173507
- Finding type
- vessel_history
- Finding
- Compiled record: built 1915 as 'Captain Dud No. S507', a wooden pontoon-hull, steel A-frame floating derrick with a copper-sheathed house, by S. Flory of Bangor, PA; acquired by the Navy in 1918 from the Thames Towboat Co. of New London, CT and placed in service as Captain Dud (ID 3507); designated YD-43; assigned to the 5th Naval District (Norfolk, VA); rebuilt in 1932; placed out of service 1956; fate unknown. Specifications: length 90 ft, beam 35 ft, boom capacity 25 tons, non-self-propelled.
- Verification
- partial
- Role
- supporting
- Documentation level
- ship_specific
- Accessed
- 2026-09-29
- Study period
- 1915-1956
- Limitations
- NavSource is a compiled secondary reference, not an official record - its details (S507 designation, copper-sheathed house, Thames Towboat acquisition, 5th Naval District assignment, 1932 rebuild, 1956 out-of-service) are consistent with the NHHC index but are not individually primary-verified here. Its specs (90 ft x 35 ft) conflict with the Wikipedia infobox (95 ft x 41 ft 8 in) - see gaps. No asbestos-related content.
- Atlas source
- true
- Evidence ID
- ev-uss-captain-dud-id3507-03
-
[5]Shipbuilding History (T. Colton), 'Derrick Barges YD' construction table; corroborated by the site's 'Other Pre-War Atlantic Coast Boatbuilders' builder table (S. Flory, Bangor PA) [other_primary]
- Locator
- shipbuildinghistory.com/smallships/yd.htm row YD 43; shipbuildinghistory.com/shipyards/other/atlanticprewar.htm row 'Flory, S.'
- Finding type
- vessel_history
- Finding
- Colton's derrick-barge table lists 'YD 43 | S. Flory | Bangor PA | 95 [ft] | 3,507 | 1915 | Ex-Captain Dud, acquired 1918'; the companion builder table lists 'Flory, S., Bangor PA ... Captain Dud ... Dredge ... 1915 ... To USN 1918 as YD 43'. Independently corroborates builder, place-of-manufacture attribution, 1915 build year, ID 3507, 1918 acquisition, and YD-43 identity.
- Verification
- partial
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-09-29
- Study period
- 1915-1956
- Limitations
- Compiled secondary tables consistent with NavSource and the NHHC index; the 'Dredge' entry in the builder table is a work-type label, not the Navy craft type. Colton's 95-ft length conflicts with NavSource's 90-ft spec. No asbestos-related content.
- Atlas source
- true
- Evidence ID
- ev-uss-captain-dud-id3507-04
-
[6]National Museum of Industrial History marker record for 'Hoisting Engine No. 1' - a 65-hp steam-powered hoisting engine built 1902 by S. Flory Mfg. Co., Bangor, PA [museum_official]
- Locator
- HMDB marker entry m=250952 (NMIH collection); derrick machinery detail unverified
- Finding type
- asbestos_application
- Finding
- Builder S. Flory Manufacturing of Bangor, PA is documented as a manufacturer of steam-powered hoisting engines; a floating derrick of 1915 would carry a powered hoisting plant, era-typically steam-driven, whose boiler lagging, steam-line insulation, gaskets, and packing commonly contained asbestos. The craft's documented 1932 rebuild falls within the peak period of asbestos use in marine construction.
- Verification
- inferred
- Role
- supporting
- Documentation level
- class_or_era
- Accessed
- 2026-09-29
- Study period
- 1915; 1932 rebuild
- Population
- Hoist operators; crew accommodation (copper-sheathed house) occupants; rebuild yard workers (1932, location undocumented)
- Limitations
- Inference chain only: (1) the machinery plant of this specific hull is not documented anywhere found; (2) steam-power inference rests on builder product line and era practice, not a hull record; (3) era insulation commonly contained asbestos says nothing about this hull's materials. Does not establish asbestos aboard, quantity, remaining material, individual exposure, or causation. NavSource's 1932 rebuild note carries no scope detail.
- Atlas source
- true
- Evidence ID
- ev-uss-captain-dud-id3507-05
-
[7]GAO, Navy Efforts To Protect Workers From Asbestos Exposure, HRD-80-2 (Oct 18, 1979) [gao]
- Locator
- GAO product page HRD-80-2
- Finding type
- gov_survey
- Finding
- GAO documented that asbestos insulation was extensively used in Navy ships and handled by naval shipyard insulation workers, and that the Navy's protective program dated to the 1970s - the environment in which any yard work on this craft (including the 1932 rebuild) occurred during eras when asbestos handling was undocumented and unregulated.
- Verification
- verified
- Role
- context
- Documentation level
- context_only
- Accessed
- 2026-09-29
- Study period
- 1979 (report); craft service span 1918-1956
- Population
- Navy yard and district craft workers (era context)
- Limitations
- Program-level context for Navy yard craft maintenance eras; gao.gov returns HTTP 403 to automated fetch (product-page description used, full text unretrieved - standing limitation per Batch-01). Names no vessel and no yard event for this hull; does not establish any material condition aboard this craft.
- Atlas source
- true
- Evidence ID
- ev-uss-captain-dud-id3507-06
-
[8]Batch-4666 search ledger (this record): NHHC index and live-site check; MVUS 1915-1919 federal register volumes; NavSource; Shipbuilding History; archived NVR floating-crane index; archive.org full-text corpus; LOC Chronicling America newspaper index; HathiTrust Ships' Data holdings; CourtListener API v4 (see sl-uss-captain-dud-id3507-08/-09) [other_primary]
- Locator
- search_ledger rows sl-uss-captain-dud-id3507-01 through sl-uss-captain-dud-id3507-10
- Finding type
- historical_record
- Finding
- No qualifying ship-specific asbestos record located: no DANFS entry, no survey, no abatement contract, no disposal/donation hazmat disclosure, and no machinery specification naming insulation materials was found in the public sources searched (see search_ledger).
- Verification
- verified
- Role
- negative_finding
- Documentation level
- ship_specific
- Accessed
- 2026-09-29
- Study period
- 2026-09-29
- Limitations
- Absence of a located public record does not prove absence of asbestos aboard - a wooden pontoon derrick has a small material footprint and undocumented hoisting machinery. 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-captain-dud-id3507-07
-
[9]CourtListener API v4 litigation sweep (authenticated fleet-paced helper cl-auth-search.py) [court_record]
- Locator
- search_ledger row sl-uss-captain-dud-id3507-08
- Finding type
- litigation_documented
- Finding
- CourtListener sweep by vessel name and hull designations (planned queries: "Captain Dud" opinion and docket types, "YD-43", "ID-3507", "Thames Towboat") could not be executed within the session - the fleet-wide pacing limiter returned blocked on repeated spaced attempts across ~45 minutes. No litigation result is asserted; the sweep is logged as blocked, not as 'no result'.
- Verification
- unverified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-09-29
- Study period
- 2026-09-29
- Limitations
- A blocked sweep establishes nothing - neither presence nor absence of litigation. For this hull the expectation is minimal litigation surface (small district service craft, commercial crew of 5 documented), but no docket evidence either way was obtainable in-session. Slipped, not skipped: sl-08 is the honest record.
- Atlas source
- true
- Evidence ID
- ev-uss-captain-dud-id3507-08
-
[10]Archival leads not retrievable in-session: NARA RG 181 (Fifth Naval District records) and RG 71 (Bureau of Yards and Docks) for the 1932 rebuild and 1956 disposal; USCG vessel documentation abstract for Official No. 160075; HathiTrust full-view Ships' Data U.S. Naval Vessels volumes 1918-1935 (catalog 012202908) for a possible YD-43 machinery entry [other_primary]
- Locator
- search_ledger rows sl-uss-captain-dud-id3507-09 and sl-uss-captain-dud-id3507-10
- Finding type
- historical_record
- Finding
- Candidate primary repositories identified for the undocumented portions of this hull's record: 1932 rebuild scope and location, machinery specification, Navy-era complement, and 1956 disposition are all potentially recoverable from the cited archival series; none was retrievable as digitized public content in this session.
- Verification
- unverified
- Role
- archival_lead
- Documentation level
- ship_specific
- Accessed
- 2026-09-29
- Study period
- 2026-09-29
- Limitations
- Leads only - no record in this row is a located document. NARA catalog v2 returned only the HTML shell to scripted queries; HathiTrust page text was Cloudflare-blocked. Nothing in this row may be cited as a ship fact.
- Atlas source
- true
- Evidence ID
- ev-uss-captain-dud-id3507-09