Evidence
12 evidence entries recorded; each entry has a stable permalink (#ev-1 … #ev-12).
-
[1]research packet 375-packet.md (5 sources cited) [other_primary]
- Finding type
- vessel_history
- Finding
- Identity packet verdict: VERIFIED
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Evidence ID
- uss-ix-523-ix523-pkt-375-packet-md
-
[2]ShipbuildingHistory (Tim Colton), RTC Shipbuilding yard table - hull 168 row; NavSource Service Ship Photo Archive, YOG-93/IX-523 page (construction dates, specifications) [other_primary]
- Locator
- RTC hull table, hull no. 168 row (shipbuildinghistory.com); NavSource https://www.navsource.net/archives/14/13093.htm specifications block
- Finding type
- vessel_history
- Finding
- YOG-93 (later IX-523) was built as RTC Shipbuilding Corporation (Camden, NJ) hull 168: laid down 1945-04-16, launched 1945-09-08; the contract was cancelled after the war but the hull was completed and delivered to the U.S. Navy in February 1946. Classed as a YOG-5 class self-propelled gasoline barge: 440 t light / 1,390 t full, 174 ft x 33 ft, one Union diesel on a single screw.
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Accessed
- 2026-09-29
- Study period
- 1945-1946
- Population
- Construction trades, RTC Shipbuilding, Camden NJ (1945-46)
- Limitations
- Both are respected specialist secondary references, not government primary records - builder's construction records (NARA RG 19 / Independence Seaport Museum RTC collection) remain unexamined. Sources agree on dates and dimensions. NavSource's '6,570 shp' propulsion figure is implausible for a 174-ft yard tanker and is not asserted. No materials or asbestos content in either source.
- Atlas source
- true
- Evidence ID
- ev-uss-ix-523-01
-
[3]Naval Vessel Register (nvr.navy.mil), 'Non Active Vessels - N' inactive-status list, IX 523 row (Wayback Machine capture 2016-09-27) [other_primary]
- Locator
- Inactive-N table row: 'NO NAME | IX 523 | 10/30/2006 | Disposed of, sold by Defense Reutilization and Marketing Service (DRMS) for reuse/conversion'
- Finding type
- vessel_history
- Finding
- Naval Vessel Register (NAVSEA) entry for IX-523 (listed 'NO NAME', as IX craft carry no name): status 'Disposed of, sold by Defense Reutilization and Marketing Service (DRMS) for reuse/conversion', effective 2006-10-30. This is the official record of the hull leaving Navy ownership.
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Accessed
- 2026-09-29
- Study period
- 2006
- Limitations
- Official NAVSEA record, captured via Wayback because the live NVR only lists current inventory. Conflicts with NavSource's 'transferred to the Maritime Administration for disposal' wording - the NVR record is adopted as controlling; MARAD's own ShipHistory database holds no YOG-93 record (see search_ledger), consistent with a DRMS rather than MARAD disposal. Disposal-agent file not located.
- Atlas source
- true
- Evidence ID
- ev-uss-ix-523-02
-
[4]NavSource Naval History, YOG-93/IX-523 page (archive ID 14/13093, last updated 2009-02-13); corroborated by hazegray.org World Navies Today: US Navy Minor Auxiliaries & Yard Craft [other_primary]
- Locator
- NavSource 14/13093 chronology block + August 2005 Little Creek photo captions; https://hazegray.org/worldnav/usa/aux_othr.htm IX-523 line
- Finding type
- vessel_history
- Finding
- NavSource Service Ship Photo Archive timeline: struck from the Naval Register 2005-05-26; withdrawn from the reserve fleet and redesignated Miscellaneous Unclassified IX-523; assigned to the Expeditionary Warfare Training Group Atlantic (EWTGLANT), Norfolk, for use as a boarding-party training hulk; in service at NAB Little Creek (four dated photographs pierside, August 2005); reefed off Delaware 2007-06-25. hazegray.org independently lists 'IX 523 | (none) | Boarding Party Training Hulk (ex-YOG 93) | Little Creek'.
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Accessed
- 2026-09-29
- Study period
- 2005-2007
- Population
- EWTGLANT boarding-party/VBSS trainees and support crew (2005-2006); earlier service-craft complement undocumented
- Limitations
- Volunteer-maintained archive, not an official record - but the IX-523 assignment and Little Creek location are corroborated by dated photographs and independently by hazegray; EWTGLANT's existence and Little Creek station are confirmed by the official Navy command page (see ev-uss-ix-523-06). The strike date and exact role duration have no official published confirmation. No asbestos or materials information.
- Atlas source
- true
- Evidence ID
- ev-uss-ix-523-03
-
[5]njscuba.net (New Jersey Scuba Diving), 'YOG-93' reef page and regional reef-history table (2007 deployment list: 'Jun 25 - YOG-93 - tanker - 174 ft - DE Reef #11') [other_primary]
- Locator
- YOG-93 page (specs, GPS, sinking photos); https://njscuba.net/artificial-reefs/artificial-reefs-history/3/ 2007 table
- Finding type
- environmental_record
- Finding
- The hull was sunk as an artificial reef on Monday 2007-06-25 at Delaware artificial reef Site 11 ('Redbird Reef'), reported position 38 deg 40.590' N / 74 deg 43.957' W in 70-90 ft of water; njscuba.net publishes sinking photographs and lists YOG-93 in its Site 11 wreck inventory.
- Verification
- partial
- Role
- supporting
- Documentation level
- ship_specific
- Accessed
- 2026-09-29
- Study period
- 2007
- Population
- Reef-prep/clean-up and sinking crews (2006-2007); recreational divers (2007-present)
- Limitations
- Specialist dive-publication source with on-site photography; date and site corroborate NavSource's 'reefed off Delaware 25 June 2007' and Wikipedia's shipwrecks-2007 entry (which cites njscuba). IMPORTANT: the official DNREC Site 11 deployment table does not list this vessel (see ev-uss-ix-523-05) - the sinking is real per multiple secondary sources but absent from the state's published deployment record. The page's own editorial guesses ('built for the invasion of Japan', 'engine probably broke down') are not asserted.
- Atlas source
- true
- Evidence ID
- ev-uss-ix-523-04
-
[6]DNREC Artificial Reef Program page; DNREC Delaware Reef Guide 2023-24 (Site 11 deployment table); Delaware Open Data Portal 'Reef Guide' dataset gkv7-32vn; DNREC 'Outdoor Delaware' artificial-reefs feature (certification language) [other_primary]
- Locator
- Reef Guide PDF https://documents.dnrec.delaware.gov/fw/Fisheries/Delaware-Reef-Guide.pdf Site 11 table (deployments 1-19); https://data.delaware.gov dataset gkv7-32vn (no YOG-93 row); certification statement at https://dnrec.delaware.gov/outdoor-delaware/artificial-reefs/
- Finding type
- environmental_record
- Finding
- DNREC (Delaware Dept. of Natural Resources and Environmental Control) official reef program materials: Delaware operates 14 permitted artificial reef sites; Site 11 is 'Redbird Reef', 16.5 nautical miles off Indian River Inlet, 68-90 ft depth - matching the reported YOG-93 sinking position. DNREC states reef vessels are deployed 'only after having been certified for environmental cleanliness and safety'. However, the official Delaware Reef Guide deployment table for Site 11 and the Delaware Open Data Portal reef dataset (154 deployment rows, current through 2022) contain no entry for YOG-93/IX-523 - the only 2007 deployment listed program-wide is the Gregory Poole on Site 13 (2007-12-02).
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-09-29
- Study period
- 1995-2022 (program record); 2007 (reported sinking)
- Limitations
- Official state source - its silence on the YOG-93 deployment is a documented discrepancy, not disproof: the reported coordinates sit inside Site 11's boundary and the deployment may have been recorded in permit files outside the public guide/table. The 'certified for environmental cleanliness' statement is program-level policy; no hull-specific certification record for IX-523 was located. The omission is carried in gaps.
- Atlas source
- true
- Evidence ID
- ev-uss-ix-523-05
-
[7]U.S. Fleet Forces Command / Carrier Strike Group 4 official site - EWTGLANT command pages (mission and history) [other_primary]
- Locator
- EWTGLANT organization page and History page (Little Creek location, command lineage)
- Finding type
- vessel_history
- Finding
- The Expeditionary Warfare Training Group, Atlantic (EWTGLANT) is an official U.S. Navy training command located at Naval Amphibious Base Little Creek, Virginia, conducting expeditionary/amphibious warfare training - consistent with NavSource's report that IX-523 served as its boarding-party training hulk.
- Verification
- verified
- Role
- context
- Documentation level
- context_only
- Accessed
- 2026-09-29
- Study period
- 2005-2006 (hulk assignment period)
- Limitations
- Confirms the command and its station only - the official pages do not name IX-523 or describe the hulk; the hulk assignment rests on NavSource/hazegray. No asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-ix-523-06
-
[8]EPA Notice E6-7274, 'National Guidance: Best Management Practices for Preparing Vessels Intended To Create Artificial Reefs,' 71 FR 27716 (2006-05-12); guidance text EPA 842-B-06-002 [federal_register]
- Locator
- Federal Register notice (statutory basis, §3516 obligation); guidance PDF https://www.epa.gov/sites/default/files/2015-09/documents/artificialreefguidance.pdf - asbestos section p.30-32, narrative clean-up goal
- Finding type
- regulatory
- Finding
- The vessel was reefed (2007-06-25) under the EPA/MARAD 'National Guidance: Best Management Practices for Preparing Vessels Intended to Create Artificial Reefs' (final notice 2006-05-12), issued per Section 3516 of the FY2004 National Defense Authorization Act, which requires the Secretary of the Navy to ensure a stricken Navy vessel prepared for reefing is handled per these BMPs and applicable environmental law. The guidance names asbestos a material of environmental concern; its asbestos clean-up goal is to remove loose asbestos and asbestos that may become loose during sinking, and to remove or seal accessible friable asbestos.
- Verification
- verified
- Role
- context
- Documentation level
- context_only
- Accessed
- 2026-09-29
- Study period
- 2004-2007
- Population
- Reef-prep and sinking crews (2006-2007)
- Limitations
- Regulatory context only. The BMP regime applied to this hull's 2007 reefing (sold by DRMS 2006-10-06 for reuse - i.e., sold to a reef pathway - and sunk June 2007), but no hull-specific preparation, inspection, or asbestos-certification record was located. Regulatory obligation is not proof that any asbestos was found or removed; the row establishes only that prep-to-standard was required. DRMS-sale custody raises a scope question on whether the §3516 Navy-prep clause or buyer/state-side certification governed - unresolved.
- Atlas source
- true
- Evidence ID
- ev-uss-ix-523-07
-
[9]EPA/MARAD, National Guidance: BMPs for Preparing Vessels Intended to Create Artificial Reefs, EPA 842-B-06-002 - 'Where is asbestos found on a ship?' inventory and pre/post-1980 presumption note [other_primary]
- Locator
- Guidance pp. 30-32 (asbestos section: definition, shipboard locations inventory, preparation BMPs)
- Finding type
- asbestos_application
- Finding
- Era/design inference for this 1945-46 hull: the EPA/MARAD reefing guidance states that thermal system insulation and surfacing material in vessels constructed after 1980 'may be presumed to be free of asbestos-containing material' - the converse presumption applies to a 1945-built hull. The guidance's shipboard asbestos inventory covers bulkhead and pipe thermal insulation, bulkhead fire shields, uptake space and exhaust-duct insulation, electrical cable materials, brake linings, floor tiles and deck underlay, steam/water/vent flange gaskets, adhesives and mastics, sound damping, molded plastic products, packing in shafts and valves, arc chutes in circuit breakers, pipe hanger inserts, and weld-shop protectors. For a diesel-powered gasoline tanker without boilers or a steam plant, the plausible subset concentrates on exhaust/uptake and engine-space insulation, gaskets, shaft/valve packing, electrical materials, deck coverings, and friction linings.
- Verification
- inferred
- Role
- supporting
- Documentation level
- class_or_era
- Accessed
- 2026-09-29
- Study period
- 1945-2007
- Population
- Construction trades (RTC Shipbuilding, Camden, 1945-46); service-craft crew (1 officer + 22 enlisted wartime complement); EWTGLANT trainees (2005-06); disposal/reef-prep crews (2006-07)
- Limitations
- Regulatory-era inventory of where asbestos is found on ships generally - not a hull record; the document does not name YOG-93/IX-523. The diesel narrowing is analytic inference, not a survey. Does not establish presence, quantity, individual exposure, or that asbestos remained aboard at sinking.
- Atlas source
- true
- Evidence ID
- ev-uss-ix-523-08
-
[10]CourtListener API v4 opinion search, exact-phrase "IX-523" [court_record]
- Locator
- search_ledger rows sl-uss-ix-523-10 through sl-uss-ix-523-12
- Finding type
- litigation_documented
- Finding
- CourtListener v4 opinion search '"IX-523"' returned zero results (authenticated query 2026-09-29). Docket-type and 'YOG-93' queries attempted; fleet pacing budget was intermittently exhausted during the session - see search_ledger for per-query status.
- Verification
- verified
- Role
- negative_finding
- Documentation level
- ship_specific
- Accessed
- 2026-09-29
- Study period
- 2026-09-29
- Limitations
- Zero opinion hits for the exact hull designation is a clean negative with no name-collision noise ('IX-523' is a unique identifier). Absence of a located opinion does not prove no claim was ever filed - pleading-stage filings and settled/administrative claims do not reach the opinion layer, and asbestos litigation on yard craft typically runs under shipyard or owner names rather than hull numbers. Recheck if a litigation corpus expansion is ever undertaken.
- Atlas source
- true
- Evidence ID
- ev-uss-ix-523-09
-
[11]Batch-4829 search ledger (this record): NavSource; NVR (Wayback); MARAD ShipHistory; DNREC Reef Guide + Open Data; njscuba; shipbuildinghistory; hazegray; NHHC/DANFS; HyperWar IX index; CourtListener [other_primary]
- Locator
- search_ledger rows sl-uss-ix-523-01 through sl-uss-ix-523-12
- Finding type
- historical_record
- Finding
- No qualifying ship-specific asbestos record located: no asbestos survey, abatement contract, hazmat disclosure, environmental certification document, or docketed case naming YOG-93 or IX-523 was found in the public sources searched. DANFS contains no entry (NavSource confirms); the hull never entered MARAD custody (ShipHistory database: no record); DNREC's deployment record omits the vessel.
- 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 completed-in-1946 hull is era-consistent with asbestos-containing materials, and the regulatory regime for its 2007 reefing explicitly contemplated asbestos handling. Does not establish presence or absence; does not establish or defeat any exposure claim or legal eligibility.
- Atlas source
- true
- Evidence ID
- ev-uss-ix-523-10
-
[12]NARA Guide to Federal Records RG 19; Independence Seaport Museum library collection note (shipbuildinghistory.com RTC page); DRMS/DLA Disposition Services disposal records; Delaware reef permit files (DNREC/USACE) [other_primary]
- Locator
- RG 19 record-group guide; museum collection cited on RTC yard page; DRMS sale referenced by NVR entry (ev-uss-ix-523-02)
- Finding type
- historical_record
- Finding
- Archival leads (not retrieved - no reproduction orders authorized): (a) NARA RG 19 (Bureau of Ships) - YOG-5 class design/specification records and RTC contract file for hull 168 could document installed materials; (b) Independence Seaport Museum, Philadelphia holds an RTC Shipbuilding collection (plans, specifications, photographs, 1930s-1960s); (c) DRMS disposal file for the 2006-10-30 sale - buyer identity and any hazmat survey/certification; (d) DNREC and/or U.S. Army Corps of Engineers reef-deployment permit file for the June 2007 Site 11 sinking - the likeliest repository of a hull-specific environmental-prep record and the probable answer to the deployment-table omission.
- Verification
- unverified
- Role
- archival_lead
- Documentation level
- context_only
- Accessed
- 2026-09-29
- Study period
- 1945-2007 records
- Limitations
- Record-location mapping only - no box-level retrieval performed; existence of asbestos-specific documents for this hull is unknown until surveyed. Nothing in this row is an asbestos finding.
- Atlas source
- true
- Evidence ID
- ev-uss-ix-523-11