Evidence
11 evidence entries recorded; each entry has a stable permalink (#ev-1 … #ev-11).
-
[1]research packet 377-packet.md (1 sources cited) [other_primary]
- Finding type
- vessel_history
- Finding
- Identity packet verdict: PARTIAL
- Verification
- partial
- Role
- context
- Documentation level
- ship_specific
- Evidence ID
- uss-ix-536-ix536-pkt-377-packet-md
-
[2]NavSource Online Service Ship Photo Archive, IX-536 (ex YD-253) page - volunteer-maintained archive transcribing Naval Vessel Register-style service craft data; NavSource notes no DANFS history exists for YD-253/IX-536 [other_primary]
- Locator
- NavSource IX-536 page, vessel data block and photo captions
- Finding type
- vessel_history
- Finding
- Service-craft identity and lifecycle record: floating crane built by Halter Marine, Lockport, LA (yard no. 1218); contract awarded 8 August 1988; delivered and placed in service as YD-253 on 15 April 1991; reconfigured as an Unmanned Undersea Vehicle (UUV) launch platform and reclassified Miscellaneous Unclassified IX-536 on 19 December 2002; active, in service, assigned to the Naval Underwater Warfare Division, Keyport, WA. Published particulars: length 175 ft, beam 75 ft, draft 4 ft; displacement and lifting capacity not published.
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Accessed
- 2026-09-29
- Study period
- 1988-2026
- Population
- Construction workforce (Halter Marine, Lockport LA, 1988-1991); Navy service-craft crews
- Limitations
- NavSource is a volunteer photo archive, not an official record - but every material fact here is corroborated by official or independent records: 1991 build at Halter Marine (Colton shipbuilding-history yard list, hull 1218, delivered 15-Apr-91); steel hull/dimensions/age (2019 SAM.gov notice); reclassification to IX-536 in 2002 (shipbuilding-history list); continued in-service status (federal contract actions through February 2026). The day-precision reclassification date (19 Dec 2002) and the 175 ft/75 ft/4 ft particulars rest on the NavSource transcription alone. One photo caption dates the San Diego-Bremerton tow 9-18 September 2003, conflicting with the towing ship's official command history (8-18 August 2003) - official dates carried.
- Atlas source
- true
- Evidence ID
- ev-uss-ix-536-ix536-01
-
[3]Naval History and Heritage Command, USS Salvor (ARS-52) 2003 Command History (OPNAV 5750-1), command-operation report PDF [other_primary]
- Locator
- Enclosure (2) chronology, August 2003 entries; narrative section 2 'West Coast Tow Operations'
- Finding type
- vessel_history
- Finding
- Official relocation record for this hull: USS Salvor's 2003 command history (OPNAV report 5750-1 to the Director of Naval History) records that Salvor was underway 8-18 August 2003 'enroute Bremerton, Washington with YDT-253 Barge Crane in tow,' covering 1,440 nautical miles from San Diego - the documented move that placed this craft in the Puget Sound region for its NUWC Keyport UUV role. Lessons-learned entry: 'Crane boom tie down rigging failed during heavy weather.'
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Accessed
- 2026-09-29
- Study period
- 2003-08-05 to 2003-08-18
- Population
- USS Salvor towing crew (Aug 2003)
- Limitations
- The official report writes the hull number 'YDT-253' rather than 'YD-253'; the hull number, vessel type (barge crane), route, and timing all match IX-536's relocation and no other 253-series derrick barge fits. The report is silent on materials, refit scope, or asbestos. It establishes location and movement only.
- Atlas source
- true
- Evidence ID
- ev-uss-ix-536-ix536-02
-
[4]SAM.gov contract opportunity notices, 'IX-536 Barge Preservation, Repair and Maintenance' (original presolicitation 18 Jul 2019; updated presolicitation 13 Aug 2019), Puget Sound Naval Shipyard & IMF [other_primary]
- Locator
- SAM.gov notice fd5c3c87122abc94091c08a2cc20f99f (revised) and 2d146dae3b2de297ff68be9f04372458 (original)
- Finding type
- historical_record
- Finding
- Official Navy maintenance-solicitation record naming this hull: PSNS & IMF Regional Maintenance Center presolicitation N4523A19R1072 for 'IX-536 Barge Preservation, Repair and Maintenance' describes IX-536 as a steel-hulled floating crane barge, approximately 28 years old in 2019 (consistent with a 1991 build), 177 ft long, 76 ft beam, 5 ft draft, approximately 1,680 LT full load / 1,653 LT light, 'home ported at Naval Base Bangor, WA.' Original 18 July 2019 synopsis required contractor dry-docking with hull coating replacement and anode renewal; the revised 13 August 2019 synopsis removed dry-docking and hull preservation and announced a sole-source Small Business HUBZone award to Platypus Marine Inc. under J&A 440-19-18JA.
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Accessed
- 2026-09-29
- Study period
- 2019-06-27 to 2019-10-27
- Population
- Contractor repair workforce (Platypus Marine, Puget Sound region, 2019-2020)
- Limitations
- Official procurement synopses only. The notice's builder line reads 'Built by Westmount Industries,' conflicting with NavSource and shipbuilding-history records naming Halter Marine, Lockport LA (yard hull 1218) - likely a data-entry error, logged as a gap. The attached draft Statements of Work are not published with the synopsis, so the work package's hazardous-materials provisions (if any) cannot be inspected; nothing in the published synopsis text mentions asbestos or abatement.
- Atlas source
- true
- Evidence ID
- ev-uss-ix-536-ix536-03
-
[5]USAspending.gov API v2 award and transaction records (contracting offices NAVSUP and NAVSEA/NUWC Keyport) [other_primary]
- Locator
- USAspending spending_by_transaction keyword 'IX-536' (award-type contracts, action dates 2011-08-24 through 2026-02-10)
- Finding type
- historical_record
- Finding
- Official federal award record of maintenance on this hull (USAspending transactions naming IX-536): N0025311P0671 Konecranes 'IX-536 crane repair' (2011, $12,890); N0025312P0322 Konecranes 'IX-536 bridge crane repair' (2012-2013, ~$34,873 net); N0025313P0277 Dakota Creek Industries 'Barge (IX 536) drydocking' (2013, $492,709 base plus modifications); N0025315P0233 West Coast Wire Rope 'USNV Barge IX-536: deck crane wires' (2015, $4,300); N0025316P0353 Konecranes 'IX-536 bridge crane maintenance' (2016-2017, ~$16,681); N4523A19C1061 Foss Maritime 'IX-536 towing' (2019, $20,400); N4523A19C1050 Puglia Engineering 'IX-536' deobligations (2019, -$601,688 and -$196,663 'Phase 3 work'); N4523A19C1065 Platypus Marine 'IX-536 maintenance, repair, and preservation' (27 Sep 2019 - 28 Feb 2020, $863,273); N0025324P0031 West Coast Wire Rope 'wire rope servicing for YTT-10, YTT-11 and IX-536 barge' (2024, $11,938; 2026, $8,530).
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Accessed
- 2026-09-29
- Study period
- 2011-2026
- Population
- Shipyard and crane-maintenance contractor personnel (Port Angeles, Anacortes, Tacoma areas, 2011-2026)
- Limitations
- Establishes continuous official maintenance activity on this hull 2011-2026 and confirms the craft remains in service, including a full drydocking event (Dakota Creek, 2013) and recurring bridge-crane and wire-rope work. Transaction descriptions are one-line summaries; none mention asbestos, hazardous materials, or abatement - the underlying work packages are not public. USAspending covers FY2008 forward; pre-2011 maintenance is unrepresented.
- Atlas source
- true
- Evidence ID
- ev-uss-ix-536-ix536-04
-
[6]FedBizOpps award notice archive (fbodaily mirror of FBO record SN02798222), 'IX-536 Barge Bridge Main Crane Repair,' 10-12 Jul 2012 [other_primary]
- Locator
- FBO Daily 12-Jul-2012 issue, award section J
- Finding type
- historical_record
- Finding
- Contracting-office evidence of this hull's operating command: the 10 July 2012 award notice for solicitation N0025312T0193 ('IX-536 Barge Bridge Main Crane Repair,' award N00253-12-P-0322, Konecranes Inc., $33,253.44) identifies the contracting office as 'N00253 NAVAL UNDERSEA WARFARE CENTER DIVISION, 610 Dowell Street, Keyport, WA' - an official record that NUWC Division Keyport operates and maintains this craft.
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-09-29
- Study period
- 2012
- Population
- Konecranes repair personnel (2012)
- Limitations
- fbodaily is a private mirror of the federal FBO feed; the notice text is the verbatim government record (record SN02798222-W, contracting office N00253 NUWC Division Keyport). Documents the operating command and one repair event; says nothing about materials or asbestos aboard.
- Atlas source
- true
- Evidence ID
- ev-uss-ix-536-ix536-05
-
[7]GAO, Navy Efforts To Protect Workers From Asbestos Exposure, HRD-80-2 (published 18 Oct 1979) [gao]
- Locator
- HRD-80-2 full text, findings/conclusions sections (spec-change history, residual-application statements)
- Finding type
- gov_survey
- Finding
- Era-boundary documentation for this hull's 1988-1991 construction window: GAO records that the Navy changed thermal-insulation product specifications to asbestos-free materials in 1973, issued an asbestos-elimination policy in October 1975, and advised that asbestos materials already purchased were 'in some cases installed in ships under construction,' so 'some ships were delivered with asbestos insulation as late as May 1978.' GAO also records that 'recently constructed Navy ships have little or no asbestos thermal insulation,' that asbestos persisted in non-insulation applications ('pipe hanger liners, gaskets, etc.'), that 'a few shipboard applications for which no acceptable substitute asbestos-free materials have been identified' remained, and that 'all ships contain some asbestos in such components as clutches and electric cables.'
- Verification
- verified
- Role
- supporting
- Documentation level
- class_or_era
- Accessed
- 2026-09-29
- Study period
- 1973-1979
- Population
- Navy shipyard workers and crews, in-service fleet 1970s
- Limitations
- Program-era documentation, not an IX-536 hull record. The quoted Navy statements describe the 1970s fleet; GAO does not name this hull or any service craft. This hull was delivered in April 1991 - thirteen years after the 'as late as May 1978' cutoff - so the era record bounds expectations downward for thermal insulation but cannot exclude residual applications (friction products, gaskets, cable insulation) that persisted past the phase-out or entered via later repair. The report is silent on the post-1979 trajectory of those applications.
- Atlas source
- true
- Evidence ID
- ev-uss-ix-536-ix536-06
-
[8]Naval Sea Systems Command, FOIA Reading Room: Asbestos Related Files (official QPL/specification index) [other_primary]
- Locator
- NAVSEA asbestos reading-room index; e.g., QPL-15091-5 insulation felt, QPL-17472 compressed asbestos sheet, QPL-33-P-16/QPL-46 asbestos packing, QPL-2781 pipe-covering list running to 1993
- Finding type
- asbestos_application
- Finding
- NAVSEA's FOIA asbestos reading room publishes the Navy's qualified-products lists (QPLs) for shipboard asbestos materials: insulation felt (asbestos fiber), compressed asbestos sheet gasket material, metallic-asbestos spiral-wound gaskets, asbestos rod/sheet packing, asbestos deck-covering and insulation cements, with list coverage mostly 1949-1980 and some pipe-covering/insulation-block lists running to 1993-1996. These are the supply categories through which asbestos could still reach a 1991-built craft, most plausibly via replacement spares, friction products, or packing rather than installed thermal insulation.
- Verification
- verified
- Role
- context
- Documentation level
- class_or_era
- Accessed
- 2026-09-29
- Study period
- 1949-1996
- Population
- Navy service-craft maintenance personnel (era-wide)
- Limitations
- Catalog-level documentation of what asbestos product types existed in Navy supply, not a hull record: no document on this page names IX-536, YD-253, or any floating crane. QPL list date ranges are document coverage dates, not proof of installation; a list ending in 1993 does not show asbestos content was specified for, or installed aboard, this craft. No hull-level conclusion may be drawn.
- Atlas source
- true
- Evidence ID
- ev-uss-ix-536-ix536-07
-
[9]Naval Sea Systems Command, 'NUWC Keyport identified as engineering agent for unmanned undersea vehicles' (navsea.navy.mil, 22 Jul 2021) [other_primary]
- Locator
- NAVSEA article body and NUWC Keyport 'About' paragraph
- Finding type
- vessel_history
- Finding
- Official Navy description of this hull's operating mission: NAVSEA announced (July 2021) that Naval Undersea Warfare Center Division Keyport was formally assigned In-Service Engineering Agent for the Orca extra-large UUV, Large Displacement UUV, and Razorback launch-and-recovery UUV programs, citing 'local infrastructure and the partnership with Unmanned Undersea Vehicle Squadron One, at Keyport' - the warfare-center context in which this converted floating crane serves as the UUV launch/recovery platform documented by NavSource.
- Verification
- verified
- Role
- context
- Documentation level
- context_only
- Accessed
- 2026-09-29
- Study period
- 2021
- Limitations
- Establishes the operating command's UUV mission; the article does not name IX-536 or any platform. The platform assignment to this hull rests on the NavSource service-craft record (ev-01), not this source.
- Atlas source
- true
- Evidence ID
- ev-uss-ix-536-ix536-08
-
[10]CourtListener API v4 via fleet-authenticated helper: type=o and type=r phrase searches '"IX-536"' and '"YD-253"' (counts 0/4-collision/0/0); bare-token type=o 'IX-536' count 7,507 (collisions) [court_record]
- Locator
- cl-auth-search.py responses 2026-09-29, retained in repo: cl-ix536-op.json, cl-ix536-dock.json, cl-yd253-op.json, cl-yd253-dock.json
- Finding type
- litigation_documented
- Finding
- No qualifying litigation of any kind naming this hull located. Authenticated CourtListener API v4 phrase sweeps returned: '"IX-536"' opinions count 0; '"IX-536"' RECAP dockets count 4, all name collisions unrelated to the craft (Citizens for Consumer... v. Abbott Laboratories, D. Mass. 2001, antitrust; Hunter v. U.S. Dept. of Education, D. Or. 2021, education civil rights; Ross v. Apple, S.D. Fla. 2016, copyright; Taylor v. Ingram, N.D. Ga. 2026, civil rights - the string matches internal exhibit/reference text, not the barge); '"YD-253"' opinions count 0; '"YD-253"' dockets count 0. A bare-token opinion search 'IX-536' returned 7,507 collision-dominated results (Title IX and docket-number matches) with no vessel reference among top-ranked hits inspected.
- Verification
- verified
- Role
- negative_finding
- Documentation level
- ship_specific
- Accessed
- 2026-09-29
- Study period
- opinion corpus coverage varies through 2026
- Limitations
- Sweep is complete for exact-phrase matches of both hull designations across opinion and RECAP docket indexes. It does not cover MDL-875 pleading attachments that mention the craft only in scanned exhibits not text-indexed, state-court filings outside RECAP, or exposure claims that referenced the assignment command (NUWC Keyport) rather than the hull number. Absence of located litigation does not prove absence of exposure claims.
- Atlas source
- true
- Evidence ID
- ev-uss-ix-536-ix536-09
-
[11]Batch-4842 search ledger (this record): NavSource, NHHC command-operation reports (Salvor 2003), SAM.gov presolicitation/J&A notices, USAspending, FBO archive, GAO HRD-80-2, NAVSEA asbestos reading room, NAVSEA NUWC Keyport release, CourtListener API v4 [other_primary]
- Locator
- search_ledger rows sl-uss-ix-536-01 through sl-uss-ix-536-13
- Finding type
- historical_record
- Finding
- No qualifying ship-specific asbestos documentation located for this hull: no asbestos survey, abatement contract or record, ACM inventory, hazmat disclosure, or materials specification naming IX-536 or YD-253 was found in public authoritative sources. The craft's 1991 build post-dates the Navy's documented asbestos-insulation phase-out by thirteen years; the published 2019 SOW synopses for its largest recent maintenance event contain no asbestos or abatement line items; and no litigation naming the hull was located in the completed CourtListener phrase sweep (ev-09).
- Verification
- verified
- Role
- negative_finding
- Documentation level
- ship_specific
- Accessed
- 2026-09-29
- Study period
- research sweep 2026-09-29
- Limitations
- Absence of a located public record does not prove absence of asbestos aboard. A 1991-built craft can still carry residual asbestos applications (gaskets, packing, friction materials, cable insulation) per the era record (ev-06, ev-07), and 35 years of contractor maintenance may have introduced or removed materials without public documentation. The SOW attachments underlying the 2013 drydocking and 2019 maintenance awards are not published; hull-level material condition is unknowable from public sources.
- Atlas source
- true
- Evidence ID
- ev-uss-ix-536-ix536-10