Evidence
5 evidence entries recorded; each entry has a stable permalink (#ev-1 … #ev-5).
-
[1]Naval History and Heritage Command, United States Pacific Fleet Organization, 1 May 1945; NHHC, CIC Manual (RADSIX), vessel-type abbreviations [other_primary]
- Locator
- Pacific Fleet Organization, page marker --111--, row YTB 412; CIC Manual designation list: YTB = harbor tugs, big, YTM = harbor tugs, medium; https://www.history.navy.mil/research/library/online-reading-room/title-list-alphabetically/c/cic--combat-information-center-manual-radsix.html
- Finding type
- vessel_history
- Finding
- The Navy's Pacific Fleet Organization of 1 May 1945 lists CONCHARDEE as YTB 412. This is the controlling name-to-hull identification used here.
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Accessed
- 2026-09-24
- Limitations
- The organizational listing establishes name and hull number as of its date; it does not give construction, crew, machinery, operating location, asbestos materials, or individual exposure.
- Atlas source
- true
- Evidence ID
- ev-uss-conchardee-ytb412-01
-
[2]National Archives, Special List 44, List of Logbooks of U.S. Navy Ships, Stations, and Miscellaneous Units, by ship number [other_primary]
- Locator
- PDF page 136 (zero-index 135), YTB-412 (Coachardee) row
- Finding type
- historical_record
- Finding
- NARA Special List 44 indexes YTB-412 logbooks from 22 May through 12 October 1945 and renders the name 'Coachardee.' The identical hull number and the Navy's Conchardee listing support treating this as an index spelling variant, not a second vessel.
- Verification
- verified
- Role
- correction
- Documentation level
- ship_specific
- Accessed
- 2026-09-24
- Limitations
- This is an inventory of logbook date coverage, not the logbooks themselves. It does not establish daily activity, continuous service throughout the range, material composition, asbestos exposure, or a commission date.
- Atlas source
- true
- Evidence ID
- ev-uss-conchardee-ytb412-02
-
[3]National Archives, Ship Plan Index [other_primary]
- Locator
- CONCHARDEE | YTB-412 | 19 | Microfilm | 175668743
- Finding type
- historical_record
- Finding
- NARA's Ship Plan Index lists CONCHARDEE, YTB-412, in Record Group 19 microfilm under National Archives Identifier 175668743. The listed plans are an archival research lead.
- Verification
- partial
- Role
- archival_lead
- Documentation level
- ship_specific
- Accessed
- 2026-09-24
- Limitations
- The large official index could not be opened in the research tool; its indexed entry was reviewed. The microfilm drawings were not obtained. Their contents and any asbestos or insulation specifications remain unknown.
- Atlas source
- true
- Evidence ID
- ev-uss-conchardee-ytb412-03
-
[4]Naval Sea Systems Command, Inactive Ships, Ship History (28 June 2011) [other_primary]
- Locator
- PDF page labeled 105, YTM 0412 row (search-index text)
- Finding type
- vessel_history
- Finding
- A NAVSEA inactive-ship history index identifies YTM 0412 as CONCHARDEE and records a removal date of 15 September 1972 with final disposition 'SOLD.'
- Verification
- partial
- Role
- supporting
- Documentation level
- ship_specific
- Accessed
- 2026-09-24
- Limitations
- The official PDF returned HTTP 403 on direct retrieval; this row was checked against indexed text only. Removal date is not necessarily the transaction closing date. It does not identify a buyer, later ownership, fate, materials, or exposure.
- Atlas source
- true
- Evidence ID
- ev-uss-conchardee-ytb412-04
-
[5]Batch 9409 primary-source search ledger: NHHC fleet list, NARA logbook and plan indexes, NAVSEA inactive-ship history [other_primary]
- Locator
- search_ledger rows sl-uss-conchardee-ytb412-01 through sl-uss-conchardee-ytb412-04
- Finding type
- historical_record
- Finding
- No ship-specific asbestos survey, abatement record, product identification, or exposure documentation was located in the reviewed NHHC, NARA, and NAVSEA public indexes. Asbestos status for this hull remains unknown.
- Verification
- verified
- Role
- negative_finding
- Documentation level
- ship_specific
- Accessed
- 2026-09-24
- Limitations
- This is a bounded negative search result, not proof that asbestos was absent. Underlying logs and drawings were not examined, and no material test or hull survey is available here. No individual exposure or legal conclusion follows.
- Atlas source
- true
- Evidence ID
- ev-uss-conchardee-ytb412-05