USS ARD-28

Evidence

18 evidence entries recorded; each entry has a stable permalink (#ev-1 … #ev-18).

1. [1]research packet ay-packet.md (2 sources cited) [other_primary]

   Finding type

   vessel_history

   Finding

   Identity packet verdict: VERIFIED — real identity: ARD-28 (never named; served as USS ARD-28 while in USN service)

   Verification

   verified

   Role

   supporting

   Documentation level

   ship_specific

   Evidence ID

   uss-ard-28-ard28-pkt-ay-packet-md

2. [2]NavSource Online: Service Ship Photo Archive, USS ARD-28 (page 09/67/6728), last updated 10 January 2025 [other_primary]

   Locator

   NavSource 09/67/6728 - chronology block, campaign table, awards ribbon list, specifications block, call-sign header, DANFS-availability note

   Finding type

   vessel_history

   Finding

   NavSource Service Ship Photo Archive page for USS ARD-28 supplies the core chronology: ARD-12 Class Auxiliary Repair Dock laid down 'in 194-' (field truncated) at Pacific Bridge Co., Alameda, CA; delivered July 1944; commissioned USS ARD-28 in July 1944; assigned to the Asiatic-Pacific Theater with campaign credit for the Okinawa Gunto operation (assault and occupation of Okinawa Gunto, 1 May to 30 June 1945); postwar occupation service in the Far East 2 September 1945 to 15 April 1946 (Navy Occupation Service Medal with Asia clasp); decommissioned date unknown; struck from the Naval Register date unknown; sold to Colombia, date unknown, named ARC Capitan Rodriguez Zamora; current disposition listed as active Colombian navy; one battle star for WWII service; awards American Campaign Medal, Asiatic-Pacific Campaign Medal, World War II Victory Medal, Navy Occupation Service Medal (Asia clasp). Specifications: displacement 5,200 t, length 492 ft, beam 81 ft, draft 6 ft, complement unknown, armament unknown, auxiliary machinery unknown; 1944 international radio call sign NHZM. Page states there is no DANFS history available for ARD-28.

   Verification

   verified

   Role

   supporting

   Documentation level

   ship_specific

   Accessed

   2026-09-26

   Study period

   1944-present (as compiled)

   Population

   Dock crew (wartime complement unverified)

   Limitations

   Volunteer-compiled archival page quoting Navy sources; consistent with primary and official sources on every checkable point (commissioning month vs NARA SL-44 log start 7/26/1944; Okinawa presence vs PHA-hearings chronology 6 May 1945 damage entry; class/specs vs Ships' Data 1945 p.607). The 'laid down in 194-' field is defective and is not carried as a date. Strike and disposal dates are not populated - superseded by the archived NVR detail record (stricken 1977-12-01; Navy sale 1981-02-01). Length given as 492 ft vs 489-491 ft 8 in in compiled/official tables - carried in gaps. 'Active Colombian navy' disposition is a compilation note, not a current-condition verification. No asbestos information.

   Atlas source

   true

   Evidence ID

   ev-uss-ard-28-ard28-01

3. [3]Department of the Navy, Bureau of Yards and Docks, 'Building the Navy's Bases in World War II: History of the Bureau of Yards and Docks and the Civil Engineer Corps 1940-1946,' Chapter IX (U.S. Government Printing Office, 1947; HyperWar/ibiblio transcription of the NHHC-held text), pp. 209-216 [other_primary]

   Locator

   bases-9.html - 'Types of Floating Drydocks' definitions and 'Auxiliary Repair Dock' section (pp. 214-216), including the revised 59-ft clear-width sentence

   Finding type

   vessel_history

   Finding

   Bureau of Yards and Docks official WWII history (Chapter IX, 'Floating Drydocks') documents the class to which this hull belonged: the ARD type is defined as 'Mobile, military, steel unit dock, ship-form hull, with a normal lifting capacity of 3,500 tons, for destroyers, submarines, and small auxiliaries.' The original group (ARD-2, ARD-5, and six others of the same dimensions built 1942-43) measured 485 ft 8 in long, 71 ft wide, 413 ft usable length, 49 ft 4 in clear width, 21 ft depth over blocks. Because the rapid production of landing craft in 1942 dictated mobile drydocks capable of handling LSTs of greater beam, 'all subsequent docks of this class were built to revised designs providing a clear width of 59 feet between the wing walls' - the revised group into which ARD-12-class hulls including ARD-28 fall. Class design features: integral unit steel hull stressed for ocean towing; bottom pontoon divided into ballast tanks; watertight safety deck in wing walls and bow; two pumping plants of two 15,000-gpm vertical-shaft pumps each; two machinery decks in the wing walls carrying pump and valve motors, welding equipment, main diesel generators, and crew quarters and messing; hull repair shop in the bow; four railway-type diesel engines directly connected to electric generators; provision made for low-power propulsion but no dock was ever so equipped; bottom-hinged stern gate; two 10-ton jib cranes; trans-Pacific tows averaged 6-8 knots. 'This dock was equipped with its own diesel-electric power plant, pumping plant, repair shops, and crew's accommodations.'

   Verification

   verified

   Role

   supporting

   Documentation level

   class_or_era

   Accessed

   2026-09-26

   Study period

   1940-1946

   Population

   WWII floating-dock builders and operating crews (class context)

   Limitations

   Official program- and class-level history; does not name ARD-28 specifically and contains no asbestos or insulation-materials content. Membership of ARD-28 in the revised-width group is corroborated by its NavSource 'ARD-12 class' label and 81-ft beam (vs 71 ft for the original group) plus the Ships' Data 1945 table row showing 59-ft clear width and 81-ft molded width. Establishes the class design and mission, not any ship-specific material claim.

   Atlas source

   true

   Evidence ID

   ev-uss-ard-28-ard28-02

4. [4]Naval Vessel Register, ship detail record NO NAME (ARD 28), UIC 05378 (nvr.navy.mil; Internet Archive capture 2017-01-26 of http://www.nvr.navy.mil/SHIPDETAILS/SHIPSDETAIL_ARD_28.HTML) [other_primary]

   Locator

   Archived NVR SHIPSDETAIL_ARD_28.HTML - status/stricken/status-changed fields; archived NVR inactive-vessels list row 'NO NAME | ARD 28 | 02/01/1981 | Disposed of, by Navy Sale'

   Finding type

   historical_record

   Finding

   The Naval Vessel Register detail record 'NO NAME (ARD 28)' (live page since removed; retrieved via Internet Archive capture of 26 January 2017) records: UIC 05378; class ARD 12; steel hull, steel superstructure; propulsion type none; status 'Disposed of, by Navy Sale' with date status changed 02/01/1981; stricken date 12/01/1977. Launch, commission, and inactivation date fields are not populated; accommodations fields are blank. The companion archived NVR inactive-ships list likewise reads 'NO NAME | ARD 28 | 02/01/1981 | Disposed of, by Navy Sale.'

   Verification

   verified

   Role

   supporting

   Documentation level

   ship_specific

   Accessed

   2026-09-26

   Study period

   1977-1981 (register events)

   Limitations

   Authoritative register record, accessed through the Internet Archive because the live NVR no longer exposes historic records for pre-1987 disposals (the current URL redirects to the index). The 02/01/1981 date is the register's 'date status changed' for Navy sale - it records U.S. legal disposition, not necessarily the physical transfer to Colombia, which other sources place earlier (see ev-09, ev-11). Strike date 12/01/1977 corrects the NavSource 'date unknown' field. No launch, commission, complement, or asbestos/materials data.

   Atlas source

   true

   Evidence ID

   ev-uss-ard-28-ard28-03

5. [5]Carter, Worrall Reed, Rear Admiral USN, 'Beans, Bullets, and Black Oil: The Story of Fleet Logistics Afloat in the Pacific During World War II' (Department of the Navy, 1953), Appendix, Floating Drydocks listing (HyperWar/ibiblio transcription of the NHHC-held text) [other_primary]

   Locator

   BBBO Appendix A - Floating Drydocks section, row 'ARD-28 | Comdr W. Hartenstein'

   Finding type

   vessel_history

   Finding

   The official Navy fleet-logistics history 'Beans, Bullets and Black Oil' (Rear Admiral Worrall Reed Carter, USN; Department of the Navy, 1953) lists ARD-28 in its appendix of principal vessels engaged in logistic work under Commander Service Force Pacific, under Floating Drydocks, with commanding officer Comdr W. Hartenstein.

   Verification

   verified

   Role

   supporting

   Documentation level

   ship_specific

   Accessed

   2026-09-26

   Study period

   1944-1945 (compilation window)

   Population

   ARD-28 dock crew under Comdr W. Hartenstein

   Limitations

   Official Navy history naming this hull and its commanding officer - establishes ARD-28's place in the Service Force Pacific logistic organization and its CO at the time of compilation, but provides no station dates, movements, or operational narrative for this hull (chapter searches located no other ARD-28 passage). Contains no asbestos or materials information.

   Atlas source

   true

   Evidence ID

   ev-uss-ard-28-ard28-04

6. [6]U.S. Navy war chronology, May 1945 section, published in the record of the Joint Congressional Committee investigation of the Pearl Harbor attack (Pearl Harbor Attack hearings transcript document set; ibiblio/pha transcription) [other_primary]

   Locator

   chr45-05.html - entry under 6 May 1945, 'United States naval vessels damaged, Okinawa area' list

   Finding type

   vessel_history

   Finding

   The official Navy war chronology published in the Pearl Harbor Attack hearings record documents ARD-28 under air attack at Okinawa: under 6 May 1945, 'United States naval vessels damaged, Okinawa area: ... Floating drydock ARD-28, by horizontal bomber, 25 d. 33'N., 127 d. 27'E.' This is the strongest ship-specific combat record located for the hull: damaged by a Japanese horizontal bomber in the Okinawa area on 6 May 1945.

   Verification

   verified

   Role

   supporting

   Documentation level

   ship_specific

   Accessed

   2026-09-26

   Study period

   6 May 1945

   Population

   ARD-28 dock crew during the 6 May 1945 air attack

   Limitations

   Official wartime chronology transcribed in the PHA hearings document set - authoritative for the fact, date, and reported position of the damage event. The entry gives no damage extent, casualty, or repair detail; the position (25 deg 33'N, 127 deg 27'E) is in the Okinawa area, consistent with the Kerama Retto anchorage used by forward ARDs, but the chronology does not name the anchorage. Contains no asbestos or materials information.

   Atlas source

   true

   Evidence ID

   ev-uss-ard-28-ard28-05

7. [7]Carter, Worrall Reed, Rear Admiral USN, 'Beans, Bullets, and Black Oil' (Department of the Navy, 1953), Chapter XXVII (HyperWar/ibiblio transcription) [other_primary]

   Locator

   BBBO Chapter XXVII - Kerama Retto floating-drydock paragraph naming ARD-13, ARD-27, ARD-22 and a fourth unnamed ARD

   Finding type

   vessel_history

   Finding

   The official Navy fleet-logistics history 'Beans, Bullets and Black Oil' (Chapter XXVII) documents the forward drydock force at Okinawa: by late May 1945 there were four ARDs at Kerama Retto - ARD-13 (arrived 16 April 1945), ARD-27 (22 May), ARD-22 (26 May), and a fourth dock the text does not name. ARD-28's documented presence in the Okinawa area from at least 6 May 1945 (PHA-hearings chronology damage entry) is consistent with - but not identical to - that unnamed fourth dock.

   Verification

   verified

   Role

   context

   Documentation level

   class_or_era

   Accessed

   2026-09-26

   Study period

   April-May 1945

   Population

   Kerama Retto repair-force and dock crews (type context)

   Limitations

   Official history documenting the Okinawa ARD force, but the fourth dock is unnamed - this row must not be read as placing ARD-28 at Kerama Retto specifically. ARD-28's Okinawa-area presence is independently documented by the 6 May 1945 damage entry (ev-05) and its Okinawa Gunto campaign credit (ev-01). Contains no asbestos or materials information.

   Atlas source

   true

   Evidence ID

   ev-uss-ard-28-ard28-06

8. [8]National Archives and Records Administration, Special List 44 by Ship Numbers (RG 24, Bureau of Naval Personnel deck logs) [other_primary]

   Locator

   sl-44-ship-number.pdf - ARD-28 rows: 'ARD-28 7/26/1944 8/11/1944', 'ARD-28 10/1/1944 10/31/1944', 'ARD-28 1/1/1945 6/30/1945' (pdftotext extraction)

   Finding type

   historical_record

   Finding

   NARA Special List 44 (List of Logbooks of U.S. Ships, Stations, and Miscellaneous Units, 1801-1947), by ship number, lists deck logs for 'ARD-28' covering 7/26/1944-8/11/1944, 10/1/1944-10/31/1944, and 1/1/1945-6/30/1945 - the last window spanning the Okinawa Gunto campaign and including the 6 May 1945 damage event.

   Verification

   verified

   Role

   archival_lead

   Documentation level

   ship_specific

   Accessed

   2026-09-26

   Study period

   July 1944 - June 1945 (indexed windows)

   Population

   ARD-28 deck-log entries (unread)

   Limitations

   Index to deck logs, not the logs themselves - establishes that log coverage exists for these windows (including the Okinawa period and the damage event) but the underlying logs were not retrieved or read; stations, crew names, and daily events are not verified from them. The coverage gaps (August-October 1944, November-December 1944) are unexplained - possibly non-logging periods under tow or unindexed logs. No asbestos information.

   Atlas source

   true

   Evidence ID

   ev-uss-ard-28-ard28-07

9. [9]Department of the Navy, 'Ships' Data, U.S. Naval Vessels,' Volume III (1945), floating-drydock characteristics table, p. 607 (shipscribe.com scan of the official publication) [other_primary]

   Locator

   SDB1945v3.pdf pp. 625-626 of the scan (book pp. 606-607) - rotated ARD table; ARD-28 row read from page-image crop

   Finding type

   vessel_history

   Finding

   Ships' Data, U.S. Naval Vessels, Volume III (1 April 1945 edition, Bureau of Ships/BuShips-issued characteristics publication) carries ARD-28 in its ARD floating-drydock characteristics table (book p. 607): one-piece steel construction; nominal lifting capacity 3,500 tons; suitable for destroyers, submarines, and LSTs; length over-all 491 ft 8 in; length on pontoon 413 ft 6 in; length on blocks 389 ft; width over-all (molded) 81 ft; clear width inside 59 ft; draft over blocks 20 ft 9 in; maximum submerged draft 33 ft 3 in; light draft 5 ft 8 in; construction start and finish 1944.

   Verification

   verified

   Role

   supporting

   Documentation level

   ship_specific

   Accessed

   2026-09-26

   Study period

   1945 edition

   Limitations

   Official 1945 characteristics publication naming this hull - the strongest dimensional record located. Values were read from a rotated-table page image of a scanned original; digits were cross-checked against the ARD-12-class design description (81-ft molded width, 59-ft clear width consistent with the revised design). The 491 ft 8 in official length sits between the compiled sources' 492 ft (NavSource) and 489 ft (shipbuildinghistory) - the discrepancy is carried rather than resolved. Table carries no complement, armament, or materials information.

   Atlas source

   true

   Evidence ID

   ev-uss-ard-28-ard28-08

10. [10]Naval Cover Museum, USS ARD-28 restored page and Covers Page 1 (1946-06-29 postmark) [museum_official]

    Locator

    navalcovermuseum.org/restored/ARD_28.html - chronology block, post-office establishment/disestablishment dates, Colombian-service note; wiki covers page for the 1946-06-29 cover

    Finding type

    vessel_history

    Finding

    The Naval Cover Museum page for USS ARD-28 records: commissioned July 1944; decommissioned date unknown; post office established aboard 1 August 1944 and disestablished 29 June 1946 (a Type P postmarked cover dated 29 June 1946 is held); one battle star (Okinawa campaign); later Colombian naval service as RODRIGUEZ ZAMORA - 'loaned to Colombia (date unknown), purchased by Colombia 1978.'

    Verification

    partial

    Role

    supporting

    Documentation level

    ship_specific

    Accessed

    2026-09-26

    Study period

    1944-1946 (post office); transfer claims 1978

    Population

    ARD-28 crew (post-office custodianship window)

    Limitations

    Philatelic museum compilation: the post-office dates and the held cover are documentary and reliable; the 'purchased by Colombia 1978' line is compilation-level and conflicts with both the NVR Navy-sale record (status changed 1981-02-01) and the Colombian-side 1961-donation claim (ev-11) - carried as an unresolved discrepancy. Post-office disestablishment marks the end of commissioned service but is not itself the decommissioning date. No asbestos information.

    Atlas source

    true

    Evidence ID

    ev-uss-ard-28-ard28-09

11. [11]Shipbuilding History (shipbuildinghistory.com), 'Small Ships - Auxiliary Floating Drydocks' table, ARD-28 row [other_primary]

    Locator

    auxafd.htm - ARD table, ARD 28 row

    Finding type

    vessel_history

    Finding

    shipbuildinghistory.com's small-ships auxiliary table records the ARD-28 construction row: 'ARD | 28 | Pacific Bridge | Alameda CA | 5,200 | 489 | Jul-44 | To Colombia as Capitan Rodriguez Zamora, active' - corroborating builder, yard location, tonnage, July 1944 delivery, and Colombian disposition.

    Verification

    verified

    Role

    supporting

    Documentation level

    ship_specific

    Accessed

    2026-09-26

    Study period

    1944-present (as compiled)

    Limitations

    Secondary compiled table (site warns its compilation is incomplete); builder, delivery month, and Colombian disposition corroborate the primary record, while its 489-ft length conflicts with NavSource's 492 ft and the official 1945 figure of 491 ft 8 in - discrepancy carried in gaps. No dates for strike or transfer; 'active' status note is compilation-level. No asbestos information.

    Atlas source

    true

    Evidence ID

    ev-uss-ard-28-ard28-10

12. [12]Pedraza-Salcedo, R. A., 'Historia de los astilleros de la Armada colombiana en el Caribe, siglo XX,' Revista Prócer 4(4):43-52 (2024), doi:10.21830/24632333.6; corroborating passages in 'Historia del arma silente de la marina Colombiana' and defensa.com Anuario Defensa Naval submarine history [other_primary]

    Locator

    Article passage via exa.ai library copy (t47rg7k04bq): 1961 donation sentence and CONASTIL 'pieza esencial' passage; defensa.com Anuario: 'a partir de 1982... dique Rodríguez Zamora del astillero nacional de CONASTIL'; arma silente history: SX-506 assembly aboard the dock, Intrépido baptism 17 April 1973

    Finding type

    vessel_history

    Finding

    A peer-reviewed Colombian naval-yard history (Pedraza-Salcedo, Revista Prócer 4(4), 2024) records the Colombian side of this hull's career: 'In 1961, the U.S. Government donated to Colombia the floating dock ARC Carlos Rodríguez Zamora, with a lifting capacity of 3,500 tons'; the dock at Base Naval ARC Bolívar was 'the essential piece' of the EDANSCO/CONASTIL yard at Cartagena, on which the Italian-built MIDGET-SX-506 midget submarines were assembled. Independent Colombian naval-history sources corroborate the SX-506 assembly aboard the dique flotante ARC Rodríguez Zamora at Cartagena (ARC Intrépido baptized 17 April 1973; ARC Indomable 1974) and its continued CONASTIL service for submarine hull and valve maintenance from 1982.

    Verification

    partial

    Role

    correction

    Documentation level

    ship_specific

    Accessed

    2026-09-26

    Study period

    1961-1982+ (Colombian service)

    Population

    CONASTIL/Base Naval Bolívar yard and dock workforce; submarine-assembly crews (1972-1974 documented)

    Limitations

    Colombian scholarship citing secondary Colombian sources (Romero, 2014) - the 1961 'donation' date conflicts with the Naval Cover Museum's 1978 purchase claim and the U.S. NVR record (stricken 1977-12-01; Navy sale 1981-02-01). A pre-strike loan/donation with retained U.S. title is mechanically consistent with how sister ARDs were transferred, but no U.S. transfer instrument was located; the discrepancy is carried rather than resolved. The 3,500-ton capacity matches the class rating and the Ships' Data 1945 table, supporting hull identity. Identity between ARC Rodríguez Zamora and ex-ARD-28 rests on NavSource/shipbuildinghistory (the Colombian sources do not give the ex-U.S. hull number). No asbestos or materials information.

    Atlas source

    true

    Evidence ID

    ev-uss-ard-28-ard28-11

13. [13]Departamento Nacional de Planeación (Colombia), press release 'Planeación Nacional fortalece la reindustrialización naval en Colombia y anuncia que se trabajara en la gestión de $50 millones USD para nuevo Dique Flotante,' Cartagena, 17 June 2026 [other_primary]

    Locator

    dnp.gov.co press release of 17 June 2026 - 13,000-ton floating-dock financing announcement at COTECMAR Mamonal

    Finding type

    vessel_history

    Finding

    Colombia's Departamento Nacional de Planeación announced on 17 June 2026 that the national government is exploring financing alternatives (~USD 50 million, ~22-month construction timeline) to acquire a new 13,000-ton self-docking floating dock for the Armada Nacional and COTECMAR at the Mamonal yard, Cartagena - the same naval-industrial complex where ARC Rodríguez Zamora serves.

    Verification

    verified

    Role

    context

    Documentation level

    context_only

    Accessed

    2026-09-26

    Study period

    June 2026

    Limitations

    Official Colombian government announcement of intent to acquire a NEW dock - it neither confirms nor retires the existing Rodríguez Zamora and says nothing about ex-ARD-28's current condition. Useful only as forward-looking context on the yard where the hull serves; not a disposition record. No asbestos or materials information.

    Atlas source

    true

    Evidence ID

    ev-uss-ard-28-ard28-12

14. [14]CourtListener API v4 opinion sweep for 'ARD-28' (authenticated via cl-auth-search.py); screened hit: United States v. Oudomsine, /opinion/9368614/ [court_record]

    Locator

    cl-auth-search.py results logged in search_ledger rows sl-uss-ard-28-ard28-13 through -16

    Finding type

    litigation_documented

    Finding

    CourtListener authenticated sweeps via cl-auth-search.py, 2026-09-26: 'ARD-28' opinion search returned 1 hit, screened as a name collision - United States v. Vinath Oudomsine (11th Cir., filed 2023-01-18), a COVID-relief-fraud criminal appeal with no vessel connection; the matched string is an in-text exhibit/form-style token, not a ship reference. '"USS ARD-28"' opinion search returned 0 results. Remaining sweep variants ('"ARD 28"' spaced variant, '"ARD-28" asbestos', '"ARD-28" dock', and type=r docket search) were attempted repeatedly and blocked by the fleet-wide pacing budget at sweep time - recorded as blocked in the search ledger rather than silently omitted. No qualifying asbestos litigation - or any vessel litigation - naming the hull was located in the completed portion of the sweep.

    Verification

    partial

    Role

    negative_finding

    Documentation level

    ship_specific

    Accessed

    2026-09-26

    Study period

    sweep 2026-09-26

    Limitations

    Partial sweep: the exact-hull and quoted-name queries completed (1 screened collision; 0 results); the spaced-variant, asbestos-qualified, dock-qualified, and docket/RECAP queries were queued behind the shared fleet pacing budget and are logged honestly as blocked - a completeness gap, not an assertion that no case exists anywhere. Even a completed sweep would not capture unindexed state-court filings, settled pleading-stage matters, Colombian-service litigation, or dockets outside RECAP.

    Atlas source

    true

    Evidence ID

    ev-uss-ard-28-ard28-13

15. [15]Keller v. Dravo Corp., 441 F.2d 1239 (5th Cir. 1971), cert. denied 404 U.S. 1017, 92 S.Ct. 679, 30 L.Ed.2d 665 (1972) [court_record]

    Locator

    Opinion at 441 F.2d 1243-44 (floating-drydock vessel-status holding); reporter citation cross-verified across case-law databases and prior-batch records

    Finding type

    litigation_documented

    Finding

    Litigation-posture context for the vessel type (not this hull, not asbestos): Fifth Circuit doctrine holds that 'as a matter of law, a floating dry dock is not a vessel when it is moored and in use as a dry dock' - Keller v. Dravo Corp., 441 F.2d 1239, 1244 (5th Cir. 1971), cert. denied 404 U.S. 1017 (1972), following Atkins v. Greenville Shipping Corp., 411 F.2d 279 (5th Cir. 1969) and Chahoc v. Hunt Shipyard, 431 F.2d 576 (5th Cir. 1970). Workers injured on moored floating drydocks were accordingly confined to Longshoremen's and Harbor Workers' Compensation Act remedies rather than vessel-owner negligence/unseaworthiness theories.

    Verification

    verified

    Role

    context

    Documentation level

    context_only

    Accessed

    2026-09-26

    Study period

    1969-1972 (doctrine)

    Population

    Floating-drydock repair workers (type context)

    Limitations

    Type-level legal doctrine, not hull evidence - no party, vessel, or facts involving ARD-28. Establishes only the litigation posture historically applicable to moored floating drydocks; says nothing about asbestos aboard this or any hull and establishes or defeats no claim of exposure or eligibility.

    Atlas source

    true

    Evidence ID

    ev-uss-ard-28-ard28-14

16. [16]Multi-repository negative sweep: NHHC/DANFS (absent), archived NVR, Ships' Data 1945, NARA SL-44, MARAD Vessel History Database, web search for survey/abatement/hazmat records [other_primary]

    Locator

    search_ledger rows sl-uss-ard-28-ard28-01, -09 through -12, -17

    Finding type

    litigation_documented

    Finding

    Negative finding - no ship-specific asbestos, hazmat, survey, abatement, or materials record for ARD-28 was located in any consulted source: no DANFS/NHHC entry exists (NavSource explicitly notes none available); the archived NVR record carries no materials data; Ships' Data 1945 carries characteristics only; NARA SL-44 is an index only; MARAD Vessel History Database returned no record for this hull (AJAX endpoint checked by hull number and name variants); OSHA/EPA/HazMat-style searches returned nothing naming the hull; no law-firm, marketing, or forum sources were used.

    Verification

    verified

    Role

    negative_finding

    Documentation level

    ship_specific

    Accessed

    2026-09-26

    Study period

    sweep 2026-09-26

    Limitations

    Absence of a located record is not proof of absence of materials - Colombian-service-era records are not in U.S. repositories, hull-level materials schedules for unnamed service craft rarely survive in public sources, and deck-log contents were indexed but not read. The finding is a documented search negative, not a clean bill.

    Atlas source

    true

    Evidence ID

    ev-uss-ard-28-ard28-15

17. [17]Inference from ev-02 (BuDocks class design), ev-05 (documented damage event), ev-06 (forward repair-dock mission at Okinawa) - no direct materials source [other_primary]

    Locator

    Synthesis row; component citations carried in the referenced evidence rows

    Finding type

    asbestos_application

    Finding

    Class/era inference row (explicitly not ship-proven): a 1944-built Navy service craft of the ARD-12 revised design carried a diesel-electric generating plant (four railway-type diesels direct-connected to generators), ballast-pump and valve machinery on two machinery decks, welding equipment, a hull repair shop in the bow, crew quarters and messing, and two 10-ton jib cranes. Machinery, electrical, and habitability spaces of 1944 Navy construction were era-consistent with asbestos-containing gaskets, packing, electrical insulation, thermal insulation, and brake linings - but the dock carried no steam propulsion plant, weakening the inference relative to propelled vessels. The asbestos-relevant dimension documented for this hull is its working mission at Okinawa: a battle-damage repair dock whose crews cut, welded, and drydocked WWII-era vessels amid era insulation suites, and itself sustained bomb damage on 6 May 1945 requiring repair work on a 1944-built steel structure.

    Verification

    inferred

    Role

    context

    Documentation level

    class_or_era

    Accessed

    2026-09-26

    Study period

    1944-present (inference window)

    Population

    ARD-28 dock crew; transient ship-repair workforces at Okinawa; CONASTIL-era Colombian yard workforce (undocumented for materials)

    Limitations

    Inference only - explicitly NOT a ship-specific finding. No source states that asbestos was installed aboard ARD-28, in what quantity, location, or condition, or that it persists in Colombian service. Construction year, Navy construction, ARD class, diesel-electric machinery, repair-dock function, and the documented damage event establish era-consistency and mission exposure pathways, not hull materials. The repair-work pathway applies to the insulation of the docked era vessels, not necessarily to the dock's own fabric.

    Atlas source

    true

    Evidence ID

    ev-uss-ard-28-ard28-16

18. [18]Composite of rows ev-01 through ev-16 - unresolved items only [other_primary]

    Locator

    See component evidence rows and gaps array

    Finding type

    vessel_history

    Finding

    Composite gap register for this hull: laid-down date not located (NavSource field truncated '194-'; Ships' Data gives construction start 1944); launch date not located; decommissioning date not located (post-office disestablishment 1946-06-29 is the best proxy); wartime complement unverified; station record silent between April 1946 end of occupation service and Colombian service (documented at Cartagena by the early 1970s; claimed 1961 donation); Colombian transfer mechanics unresolved (loan date unknown vs purchase 1978 vs donation 1961 vs U.S. Navy sale 1981-02-01 - consistent only if a pre-strike loan/donation preceded legal sale); overall length discrepant (491 ft 8 in official vs 492 ft vs 489 ft compiled); extent of 6 May 1945 bomb damage not documented; material condition in Colombian service undocumented; no asbestos survey or materials schedule located at either end of the career.

    Verification

    verified

    Role

    negative_finding

    Documentation level

    ship_specific

    Accessed

    2026-09-26

    Study period

    1944-present

    Limitations

    Gap register - consolidates unresolved items so the record reads conservatively; each gap inherits the limitation of its parent row. None of these gaps licenses an inference of ship-specific asbestos presence.

    Atlas source

    true

    Evidence ID

    ev-uss-ard-28-ard28-17