Evidence
10 evidence entries recorded; each entry has a stable permalink (#ev-1 … #ev-10).
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[1]research packet 1115-packet.md (2 sources cited) [nhhc_danfs]
- Finding type
- vessel_history
- Finding
- Identity packet verdict: VERIFIED
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Evidence ID
- uss-hackensack-ytm750-pkt-1115-packet-md
-
[2]DANFS, Hackensack (YTM-750) - NHHC live page verified 2026-10-05 (published 24 Jan 2018) [nhhc_danfs]
- Locator
- DANFS Hackensack entry, spec block and service paragraph
- Finding type
- vessel_history
- Finding
- Documented for this hull: '(YTM-750: dp. 390 (f.); l. 107'; b. 26.6"; dr. 12'; s. 12 k.; cpl. 10; cl. Army LT-2089)' - 'Hackensack (YTM-750), a medium harbor tug was taken over from the Army in 1963. She was built by the Higgins Co., New Orleans, La., in 1953.' - 'Hackensack was assigned to the 10th Naval District and operated in the harbor of San Juan, P.R., until struck from the Navy List 1 March 1967.' Name origin: 'A city in New Jersey.'
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-05
- Study period
- 1953-1967 (entry coverage)
- Population
- Construction trades (Higgins, 1953-54); Navy crew (1963-1986)
- Limitations
- Ship-specific history only; no asbestos or material content. The stated strike date of 1 March 1967 is contradicted by the NVR-derived status list (9 Jun 1986, ev-03) and by the documented 1988-1996 Intrepid Museum service - treated as an unresolved conflicting statement, not carried. Beam prints as '26.6"' - almost certainly a transcription artifact for 26'6".
- Atlas source
- true
- Evidence ID
- ev-uss-hackensack-ytm750-01
-
[3]NavSource Online: Service Ship Photo Archive, Hackensack (YTM-750) ex US Army Tug LT-2089 - Chicopee class district harbor tug (medium) timeline and specifications (live page verified 2026-10-05; last updated 18 Jul 2014) [other_primary]
- Locator
- NavSource 14/11750.htm header block and specifications block
- Finding type
- vessel_history
- Finding
- NavSource timeline for this hull: laid down, date unknown, Higgins Industries, New Orleans, LA; launched, date unknown; delivered in 1953 to the US Army; acquired by the US Navy in July 1963; placed in service as the district harbor tug (medium) Hackensack (YTM-750); assigned to the 10th Naval District, San Juan, Puerto Rico; placed out of service, date unknown; struck from the Naval Register in March 1976; final disposition - disposed of by GSA, date unknown. Specifications: 310 t.(fl), 107', beam 27', draft 12', 12 kts, complement 16, armament none, diesel single propeller. National Defense Service Medal ribbon displayed.
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-05
- Study period
- 1953-1986
- Population
- Construction trades (1953-54); Navy crew (1963-1986)
- Limitations
- NavSource is a volunteer secondary compilation, not a primary registry. Its 'March 1976' strike date conflicts with both DANFS (1 Mar 1967) and the NVR-derived Proceedings list (9 Jun 1986) - treated as an unresolved variant, not carried. Spec conflicts vs DANFS (displacement 310 vs 390; complement 16 vs 10; beam 27' vs 26'6") are logged in gaps. Contains no asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-hackensack-ytm750-02
-
[4]U.S. Naval Institute Proceedings, Naval Review 1987 (May 1987, Vol. 113/5/1,011), 'Ships' Status Changes' - STRICKEN FROM THE NAVAL VESSEL REGISTER list; the NVR/Ship's Data Book is the official inventory listing maintained by the NAVSEA Shipbuilding Support Office [other_primary]
- Locator
- Proceedings May 1987 'Ships' Status Changes', STRICKEN FROM THE NAVAL VESSEL REGISTER table, 9 Jun 86 row
- Finding type
- historical_record
- Finding
- The NVR-derived status list records Hackensack (YTM-750) - explicitly identified as ex-LT-2089 - stricken from the Naval Vessel Register on 9 June 1986 with disposition 'to be disposed of by sale.' This is the official-inventory strike record; it corrects the conflicting secondary dates (DANFS 1 Mar 1967, NavSource Mar 1976) and is consistent with the documented Intrepid Museum acquisition in October 1986 and the 1988-1996 museum service.
- Verification
- verified
- Role
- correction
- Documentation level
- ship_specific
- Accessed
- 2026-10-05
- Study period
- 1986
- Population
- Final Navy crew (to Jun 1986); disposal/sale parties
- Limitations
- The published table is OCR-degraded; the row parses as '9 Jun. 86 / Hackensack (YTM-750)' in the STRICKEN FROM THE NAVAL VESSEL REGISTER section with comment text 'Ex-LT-2089, to be disposed of by sale' at the matching position. Date and hull are unambiguous; the comment-column alignment is reconstructed from list order. Records the strike and intended disposition - not the actual sale date or buyer.
- Atlas source
- true
- Evidence ID
- ev-uss-hackensack-ytm750-03
-
[5]Shipscribe (Stephen S. Roberts), 'Harbor Tugs, 1946-1980: Photo Gallery,' YTM 747 class note - quoting an internal Navy memo dated 3 November 1961 on acquisition of Army tugs [other_primary]
- Locator
- Shipscribe YT/YT745-p.html, 'YTM 747 class' paragraph
- Finding type
- vessel_history
- Finding
- Class procurement documented: an internal Navy memo dated 3 November 1961 investigated acquiring Army tugs; 'These tugs were 107' long, 1200 HP, with a bollard pull of 30,000 pounds. Their high structure left something to be desired in working with carriers as did their direct drive feature, and they did not have communications, radar, or gyros...' Eleven tugs with Army numbers between LT-1964 and LT-2095 were selected, and on 21 January 1963 they were designated YTM-747 to YTM-757 and assigned names. LT-2089 (Hackensack, YTM-750) falls inside this procurement series.
- Verification
- verified
- Role
- context
- Documentation level
- class_or_era
- Accessed
- 2026-10-05
- Study period
- 1961-1963 (memo and designation)
- Population
- Class crew and maintainers (1963-forward)
- Limitations
- Class-level documentation naming the procurement series, not this hull specifically - establishes the 21 Jan 1963 designation/naming date for the class and class characteristics. A secondary compilation quoting a primary memo; the memo itself is not directly reproduced. No asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-hackensack-ytm750-04
-
[6]Naval Marine Archive, 'US Army Ocean Tugs LT ST Post-War' LT table; corroborated by shipbuildinghistory.com Higgins Industries yard list (njscuba.net mirror) and NMA 'Yard Tugs Post-War' yt3 table [other_primary]
- Locator
- navalmarinearchive.com/sbh/smallships/armytugs2.html LT-2089 row; shipbuildinghistory.njscuba.net/us-comm-small/higgins/ LT-2089 row; navalmarinearchive.com/sbh/smallships/yt3.html row 750
- Finding type
- vessel_history
- Finding
- Army-era data for this hull: LT-2089 built by Higgins Industries, New Orleans, as Higgins hull no. 11977, delivered 1954 (NMA LT table); the shipbuildinghistory.com Higgins yard list likewise gives 1954 with 'to USN as Hackensack (YTM-750), struck 1986.' Sister-tug fates in the same table document the class pattern (e.g., LT-2092 to USN as Manteo YTM-751, to Nigeria 2002). The NMA yard-tug table (yt3) lists Hackensack: ex-LT 2089, Higgins Industries, New Orleans, 310 LDT, built 1953, struck 1986.
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-05
- Study period
- 1953-1963 (Army era); 1986 (strike)
- Population
- Army crew (1953/54-1963)
- Limitations
- Volunteer secondary compilations, not primary yard records. Internal conflicts: delivery year 1953 (DANFS, NavSource, NMA yt3) vs 1954 (NMA LT table, shipbuildinghistory); Higgins hull number 11977 appears only in the NMA LT table. 'Struck 1986' corroborates the NVR-derived date. No asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-hackensack-ytm750-05
-
[7]NavSource Growler (SSG-577) page photo captions (US Navy-credited photos via Scott Koen/ussnewyork.com); Sea History No. 80 (Winter 1996-97), National Maritime Historical Society, pp. 21-22 (reputable press); Warship Models Underway SeaPhoto catalog YTM750A/B entries; Intrepid Museum Instagram statement [other_primary]
- Locator
- NavSource 08/08577.htm captions (0857716 series, 0857716c 1996 complex photo); Sea History index entry 'Hackensack (tugboat), 80:21-22'; wmunderway.mysite.com/seaphoto/catalog/navytugs.html; instagram.com/p/C-bFm-TJ-iZ (Intrepid Museum comment)
- Finding type
- historical_record
- Finding
- Post-Navy museum service documented: NavSource captions record 'The Tugboat Hackensack (YTM-750) pushing the Ex-Growler (SSG-577) up to the Intrepid Museum in 1988. Fresh from the refit at Tampa Ship' (US Navy photo credit), and a 1996 photo of the Intrepid Museum complex lists Hackensack among the museum's vessels alongside Intrepid, Growler, Slater, Edson, Tamaroa, and Nantucket. Sea History 80 describes 'the Intrepid's Hackensack (1,200 hp)' in a New York harbor tug pushing contest. A commercial photo catalog documents her photographed at the Intrepid Museum in 1994. The museum states it acquired the tug in October 1986 and that she is now in private hands.
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-05
- Study period
- 1986-1996
- Population
- Intrepid Museum tug crew and museum trades (1986-1996+)
- Limitations
- Post-Navy vessel-history context only; no asbestos content. The October 1986 acquisition date and 'private hands' status rest on the museum's own social-media statement (lead-level sourcing). The wmunderway catalog is a commercial photo list - documents presence at the museum in 1994, nothing more. Does not establish the sale mechanism (NVR says disposal 'by sale'; NavSource says 'by GSA' - compatible but unresolved).
- Atlas source
- true
- Evidence ID
- ev-uss-hackensack-ytm750-06
-
[8]GAO, Navy's Efforts To Protect Workers From Asbestos Exposure, HRD-80-2 (Oct 18, 1979) - full text extracted this session via Firecrawl [gao]
- Locator
- GAO HRD-80-2 full text, 'Navy's Policy on Use of Asbestos' section
- Finding type
- gov_survey
- Finding
- Navy-wide asbestos-era documentation spanning this hull's entire Navy service (1963-1986): 'product specifications for thermal insulation had been changed in 1973 to specify the use of asbestos-free materials, [but] asbestos materials had already been purchased and in some cases installed in ships under construction. Therefore, some ships were delivered with asbestos insulation as late as May 1978.' 'All ships contain some asbestos in such components as clutches and electric cables'; thermal insulation was 'the Navy's major use of asbestos aboard ships.' The 1975 removal policy covered only damaged insulation or that removed for repairs; in January 1979 it was modified to selectively replace insulation in high-maintenance areas.
- Verification
- verified
- Role
- context
- Documentation level
- class_or_era
- Accessed
- 2026-10-05
- Study period
- 1979 (report); policy window 1973-1979
- Population
- Navy shipyard workers; Navy-wide asbestos program review
- Limitations
- Program-level documentation; supports era context only, not any fact specific to this hull. The report addresses Navy new construction and shipyard practice - it does not document materials aboard a 1953-54 Army-built tug, individual exposure, quantity, or remaining material.
- Atlas source
- true
- Evidence ID
- ev-uss-hackensack-ytm750-07
-
[9]Era inference built on: DANFS/NavSource (diesel, single propeller, built 1953); Shipscribe class note (1,200 hp, direct drive, 107'); GAO HRD-80-2 (Navy asbestos era through 1978 deliveries); Naval Vessel Register timeline (service to Jun 1986) [other_primary]
- Locator
- ev-01 through ev-04, ev-07 (assembled inference)
- Finding type
- asbestos_application
- Finding
- A diesel harbor tug built 1953-54 for the Army and in Navy service 1963-1986 sits inside the documented asbestos era for vessel construction and maintenance. Era-standard applications aboard a tug of this type and period were machinery and exhaust-system insulation, gaskets, valve and flange packing, and electrical insulation in a small enclosed hull volume. As a diesel craft she carried no steam plant - the boiler/steam-line lagging pathway of steam vessels does not apply.
- Verification
- inferred
- Role
- supporting
- Documentation level
- class_or_era
- Accessed
- 2026-10-05
- Study period
- 1953-1996
- Population
- Higgins construction trades (1953-54); Army crew (to 1963); Navy crew (1963-1986); museum crew and trades (1986-1996+)
- Limitations
- Class/era inference only - no hull-specific insulation survey, material list, maintenance record, or work package located for YTM-750 or LT-2089. Names era-standard applications, not confirmed installed materials. No quantity, no manufacturer attribution for this hull. 23 years of Navy service included the 1973-79 asbestos-substitution transition; whether any abatement occurred during service or museum custody is undocumented.
- Atlas source
- true
- Evidence ID
- ev-uss-hackensack-ytm750-08
-
[10]Batch-9495 search ledger (this record): DANFS live page; NavSource; USNI Proceedings NVR status list; Shipscribe; Naval Marine Archive; shipbuildinghistory.com; NVR (pre-1987 exclusion applies); GAO HRD-80-2 full text; CourtListener base queries (see ledger for per-query status); secondary web litigation sweep [other_primary]
- Locator
- search_ledger rows sl-uss-hackensack-ytm750-01 through -11
- Finding type
- historical_record
- Finding
- No qualifying ship-specific asbestos record located: no asbestos survey, abatement contract, hazmat disclosure, or verified litigation naming Hackensack (YTM-750) or LT-2089 was found in the public sources searched (see search_ledger). All four CourtListener base queries returned zero results: 'USS Hackensack' (opinion and docket) and 'YTM-750' (opinion and docket). Secondary web sweeps surfaced no qualifying case; the only 'asbestos aboard' material is law-firm marketing content - excluded by source policy.
- Verification
- verified
- Role
- negative_finding
- Documentation level
- ship_specific
- Accessed
- 2026-10-05
- Study period
- 2026-10-05
- Limitations
- Absence of a located public record does not prove absence of asbestos aboard. A 1953-54-built tug sold in 1986 and kept in museum/civilian service may retain era materials; nothing reviewed establishes or defeats any exposure claim. Deck logs, Army delivery records, and the 1986 sale file are undigitized leads.
- Atlas source
- true
- Evidence ID
- ev-uss-hackensack-ytm750-09