Evidence
7 evidence entries recorded; each entry has a stable permalink (#ev-1 … #ev-7).
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[1]Dictionary of American Naval Fighting Ships, Acoma II (Navy-authored text, HistoryCentral transcription) [nhhc_danfs]
- Locator
- Acoma II entry, historical paragraph
- Finding type
- vessel_history
- Finding
- The Navy-authored DANFS Acoma II history identifies YTB-701 as a Hisada-class tug laid down at Bethlehem Steel Co., San Pedro, on 2 July 1945, launched 30 August 1945, delivered to the Navy 12 March 1946, and activated in August 1946. It records redesignation to YTM-701 in February 1962, placement out of service and striking in December 1985, and subsequent transfer to an unnamed agency.
- Verification
- partial
- Role
- supporting
- Documentation level
- ship_specific
- Accessed
- 2026-09-24
- Limitations
- Navy-authored text is available here as a third-party transcription; the corresponding NHHC DANFS page was not located. The transcription renders the district assignment as 'list Naval District', so no district number is adopted. It supplies no crew figure, propulsion detail, asbestos finding, or exact December 1985 date; transfer recipient and later fate remain unknown.
- Atlas source
- true
- Evidence ID
- ev-uss-acoma-ytb701-01
-
[2]U.S. Navy Bureau of Ships, Naval Vessel Register, 1 January 1949, NAVSHIPS 18-1-11 (scan hosted by General Staff) [other_primary]
- Locator
- Printed p. 236, YTB-701 ACOMA row; PDF image page 237
- Finding type
- vessel_history
- Finding
- The Navy Bureau of Ships' 1 January 1949 Naval Vessel Register lists ACOMA, YTB-701, in the List of Service Craft with vessel status ACT and status code 1.
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Accessed
- 2026-09-24
- Limitations
- ACT documents administrative active status on the register date. It does not document tasks, individual crew members, asbestos content, or exposure. Other small columns on the scan were not transcribed because of legibility.
- Atlas source
- true
- Evidence ID
- ev-uss-acoma-ytb701-02
-
[3]Naval History and Heritage Command, photograph NH 96940, USS Valley Forge (CV-45) [nhhc_danfs]
- Locator
- NH 96940 image caption
- Finding type
- vessel_history
- Finding
- NHHC photograph NH 96940 identifies Acoma (YTB-701) assisting USS Valley Forge (CV-45) as the carrier left San Diego on 6 December 1950.
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Accessed
- 2026-09-24
- Limitations
- This is a dated identification of harbor assistance, not a full service history or any evidence about onboard materials or exposure.
- Atlas source
- true
- Evidence ID
- ev-uss-acoma-ytb701-03
-
[4]OPNAVINST 5100.19F, Navy Safety and Occupational Health Program Manual for Forces Afloat, asbestos-control section [other_primary]
- Locator
- Chapter B1, paragraph 4d, printed p. B1-4
- Finding type
- asbestos_application
- Finding
- Navy shipboard asbestos-control guidance says thermal insulation on ships built before 1980 should be treated as potentially asbestos-containing until laboratory analysis or reliable documentation establishes otherwise.
- Verification
- verified
- Role
- context
- Documentation level
- class_or_era
- Accessed
- 2026-09-24
- Limitations
- General Navy precaution for the construction era, published long after this tug's service; it neither identifies insulation aboard Acoma nor establishes asbestos presence, quantity, disturbance, individual exposure, or causation. It is not a ship-specific finding.
- Atlas source
- true
- Evidence ID
- ev-uss-acoma-ytb701-04
-
[5]National Archives, Ship Plan Index; Researching Asbestos aboard US Naval Vessel up through 1961 [other_primary]
- Locator
- Ship Plan Index, ACOMA/YTB-701/RG 19/Microfilm/175668028; guide: Ship Engineering Drawings, S39 and 19-Micro
- Finding type
- historical_record
- Finding
- NARA's Ship Plan Index lists ACOMA, YTB-701, in Record Group 19 microfilm under catalog identifier 175668028. NARA's asbestos-research guide directs researchers to RG 19 ship engineering microfilm for detailed drawings, including potential insulation and lagging plans.
- Verification
- verified
- Role
- archival_lead
- Documentation level
- ship_specific
- Accessed
- 2026-09-24
- Limitations
- The index proves a microfilm listing, not the content of any drawing. Microfilm was not retrieved; the existence of an Acoma insulation plan or any asbestos specification is unknown.
- Atlas source
- true
- Evidence ID
- ev-uss-acoma-ytb701-05
-
[6]NHHC, photograph NH 100893, USS Acoma (SP-1228) [nhhc_danfs]
- Locator
- NH 100893 image caption
- Finding type
- historical_record
- Finding
- NHHC identifies USS Acoma (SP-1228) as a different motor boat acquired in 1917 and returned to its owner in 1918; this is not YTB-701.
- Verification
- verified
- Role
- correction
- Documentation level
- context_only
- Accessed
- 2026-09-24
- Limitations
- This row distinguishes a same-name vessel for source screening. It supplies no information about YTB-701 materials or service.
- Atlas source
- true
- Evidence ID
- ev-uss-acoma-ytb701-06
-
[7]Batch 9455 search ledger: Navy register, NHHC/DANFS, NARA, Navy guidance, and authenticated CourtListener API v4 [other_primary]
- Locator
- search_ledger sl-uss-acoma-ytb701-01 through -10
- Finding type
- historical_record
- Finding
- No ship-specific asbestos record was located in the public sources searched: the retrieved Navy register, NHHC photograph, DANFS transcription, NARA plan index, and Navy asbestos guidance contain no asbestos finding for Acoma (YTB-701); authenticated CourtListener v4 exact-name and YTB-701 opinion and docket searches returned zero results.
- Verification
- verified
- Role
- negative_finding
- Documentation level
- ship_specific
- Accessed
- 2026-09-24
- Limitations
- A scoped search result, not proof that the vessel lacked asbestos or that no private claim exists. The NARA microfilm drawings were not retrieved, and CourtListener coverage is not exhaustive; the search does not establish or negate individual exposure, causation, or legal eligibility.
- Atlas source
- true
- Evidence ID
- ev-uss-acoma-ytb701-07