Evidence
7 evidence entries recorded; each entry has a stable permalink (#ev-1 … #ev-7).
-
[1]DANFS, Barrier (AM-150), revised online entry by Raymond A. Mann dated 24 February 2006 (Wayback capture of history.navy.mil/danfs/b3/barrier-i.htm; live NHHC page no longer resolves) [nhhc_danfs]
- Locator
- Wayback capture 2006-07-23 of NHHC DANFS entry 'Barrier' (b3 index), full entry text and specs block
- Finding type
- vessel_history
- Finding
- Revised DANFS entry for this hull: laid down 7 December 1942 at Tampa, Florida, by Tampa Shipbuilding Company, Inc.; launched 23 February 1943 (sponsor Mrs. Eugenie Bradford, wife of Lt. L. M. Bradford, Assistant Technical Officer (Hull) at the builder's yard); commissioned 10 May 1944, Lt. Donald T. Ehrmann in command (DANFS prints 'USMC'; NavSource and uboat.net read USNR - flagged in gaps); transited Panama Canal late July 1944, began Alaskan duty 14 August 1944; convoy escort and minesweeping in the Aleutians for 11 months; decommissioned at Cold Bay, Alaska, 18 July 1945 and 'simultaneously transferred to the Soviet Navy under lend lease'; carried on the American Navy list as MSF-150 after 7 February 1955 until struck 1 January 1983. Specs block: dp 650; l. 184'6"; b. 33'0"; dr. 9'9"; s. 14.8 k.; cpl. 104; a. 1 3", 4 40mm.; cl. Admirable.
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Accessed
- 2026-09-22
- Study period
- 1942-1983
- Population
- Tampa Shipbuilding construction trades 1942-44; wartime crew (design complement 104); Soviet trainees at Cold Bay, July 1945
- Limitations
- DANFS documents construction, service history, and administrative status - not materials or asbestos content. The revised entry reads 'simultaneously transferred' on 18 July 1945; the NHC Project Hula study (ev-02) dates the Soviet transfer 19 July 1945 - conflict carried in gaps rather than silently reconciled. An older DANFS transcription (hazegray mirror of the earlier printed entry) reads 'July 1946' for the Alaska service window and Russian-crew training - inconsistent with the July 1945 transfer and superseded by this revised entry's '11 months' framing.
- Atlas source
- true
- Evidence ID
- ev-uss-barrier-am150-01
-
[2]Richard A. Russell, Project Hula: Secret Soviet-American Cooperation in the War Against Japan (Washington, D.C.: Naval Historical Center, 1997), ISBN 0-945274-35-1 - appendix 'U.S. Navy Combatant Ships Transferred to the USSR Under Project HULA, May-September 1945' (pp. 39-40), citing NAVSHIPS 250-012 Ships Data vol. II (1949) and Berezhnoi, Flot SSSR lend-lease reference (1994) [other_primary]
- Locator
- Russell 1997, appendix pp. 39-40 (hull row); pp. 27-28, 34-35 (program context and northern-Korea operations)
- Finding type
- vessel_history
- Finding
- The NHC program history's appendix names this hull: 'Barrier (AM 150)' -> Soviet designation 'T-335', transfer date 19 July 1945, disposition '1956 - scrapped'. Program context documented in the same study: ~12,000 Soviet personnel trained at Cold Bay; 149 ships transferred by Navy Detachment 3294 in 142 days; U.S. decommissioning, transfer, and Soviet commissioning occurred simultaneously at transfer; transferred minesweepers participated in Soviet operations against Japanese positions in northern Korea in August 1945 (Popov's report to Maxwell - no hull named individually).
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Accessed
- 2026-09-22
- Study period
- 1945-1956
- Population
- Soviet Navy crew of T-335 (1945-1956); Cold Bay Soviet trainees and U.S. Navy Detachment 3294 personnel
- Limitations
- Official NHC monograph using Soviet-era records unavailable to earlier sources - authoritative for transfer date and Soviet designation, but names this hull only in the appendix table; it does not detail T-335's individual Soviet operations and says nothing about materials or asbestos. Transfer date (19 July) conflicts with the revised DANFS entry's 18 July 'simultaneously transferred' framing - carried in gaps.
- Atlas source
- true
- Evidence ID
- ev-uss-barrier-am150-02
-
[3]Russell, Project Hula appendix (NHC 1997) vs. secondary-source propagation: hazegray DANFS transcriber's note, uboat.net ship page, and NavalCoverMuseum entry all render the Soviet designation 'T-525' [other_primary]
- Locator
- Russell 1997 appendix p. 39 (Barrier AM 150 -> T-335) and p. 40 (YMS 428 -> T-525); hazegray.org/danfs/mine/am150.htm transcriber's note; uboat.net/allies/warships/ship/5268.html; navalcovermuseum.org/wiki/BARRIER_AM_150
- Finding type
- vessel_history
- Finding
- Several secondary sources identify Barrier's Soviet designation as T-525 (hazegray DANFS transcriber's note: 'served as T-525 in the Soviet Navy until allegedly scrapped in the USSR in 1956'; uboat.net 'renamed T-525'; NavalCoverMuseum 'T-525'). The NHC Project Hula appendix - built from NAVSHIPS 250-012 and Berezhnoi's Soviet lend-lease reference - records Barrier (AM 150) as T-335, and separately lists YMS-428 as T-525, indicating the T-525 attribution to Barrier is a propagated error. NavalCoverMuseum also prints a transfer date of 'July 14 1945', inconsistent with both DANFS (18 July) and Russell (19 July).
- Verification
- verified
- Role
- correction
- Documentation level
- ship_specific
- Accessed
- 2026-09-22
- Study period
- 1945-1956
- Limitations
- Corrects identity metadata only. T-335 is carried per the NHC appendix; the T-525 variant is retained solely in aliases for retrieval. Does not speak to materials or asbestos; NavalCoverMuseum's 14 July date treated as a typo, not a third position.
- Atlas source
- true
- Evidence ID
- ev-uss-barrier-am150-03
-
[4]NavSource Online: Mine Warfare Vessel Photo Archive, 'Barrier (MSF 150) ex-AM-150, ex-AMc-127' (volunteer-compiled naval photo/history archive; page verified via indexed content - direct fetch refused from this host) [other_primary]
- Locator
- NavSource MSF-150 page: chronology block, specifications block, commanding-officer list
- Finding type
- vessel_history
- Finding
- NavSource's compiled chronology for this hull adds details not in DANFS or Russell: assigned to the Soviet Pacific Fleet 7 August 1945 and 'participated in the landing at Seisen (Chongjin), Korea'; reclassified a dispatch ship and named Istok 17 October 1955; scrapped 11 July 1956; struck from the Naval Register 1 January 1983. Its specifications block gives the propulsion fit: two 1,710shp ALCO 539 diesel engines, Farrel-Birmingham single reduction gear, two shafts.
- Verification
- unverified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-09-22
- Study period
- 1945-1956
- Population
- Soviet crew of T-335
- Limitations
- NavSource is a volunteer-compiled archive, not a government record; its Soviet-service particulars (Chongjin landing, Istok rename, 11 July 1956 scrapping date) are carried as unverified context. Russell's NHC study corroborates the designation (T-335), scrapping year (1956), and at program level that transferred minesweepers operated in northern Korea, but names no individual hull in combat. Propulsion figures consistent with the Admirable-class fit for Tampa-built hulls (2 x 855shp ALCO 539).
- Atlas source
- true
- Evidence ID
- ev-uss-barrier-am150-04
-
[5]Atlas shipyard dataset record 'tampa-bay-shipbuilding' (shipyards.json; tier 3: yard-level asbestos products documented - pipe/turbine insulation, gaskets, valve packing, fireproofing, brake linings; WWII peak employment ~16,000) + Admirable-class specifications (steel hull; ALCO 539 diesel propulsion, no boilers) per DANFS class data and NavSource spec block [other_primary]
- Locator
- shipyards.json record 'tampa-bay-shipbuilding'; DANFS/NavSource Admirable-class specification blocks
- Finding type
- asbestos_application
- Finding
- Era/class inference: a steel-hulled Admirable-class minesweeper built 1943-44 would have carried period-standard asbestos materials typical of WWII combatant construction - exhaust and engine-room thermal lagging, machinery-space acoustic and fire insulation, joiner/bulkhead fireproof panels, gaskets and packing, electrical insulation, winch and windlass brake linings, deck coverings. Her diesel propulsion (ALCO 539, no boilers) narrows the profile versus steam-driven vessels. Builder Tampa Shipbuilding is documented at yard level in the Atlas dataset (tier 3) with wartime asbestos product use.
- Verification
- inferred
- Role
- supporting
- Documentation level
- class_or_era
- Accessed
- 2026-09-22
- Study period
- 1942-1956
- Population
- Tampa Shipbuilding construction trades 1942-44; wartime crew 1944-45; Soviet crew 1945-56
- Limitations
- Class/era and builder-yard inference only - no source names asbestos aboard this specific hull. No boiler or steam-line insulation inference applies (diesel plant). Yard-level documentation evidences a construction-phase pathway for Tampa workers generally, not materials installed on AM-150. Does not establish quantity, location, or any individual exposure.
- Atlas source
- true
- Evidence ID
- ev-uss-barrier-am150-05
-
[6]Batch-1174 search ledger (this record): revised DANFS entry (Wayback/NHHC); hazegray and NavSource verbatim mirrors; Russell, Project Hula (NHC 1997) full text; Naval Vessel Register site; CourtListener API v4 ship-name and hull-number queries (blocked - quota); web litigation sweep including VA/BVA-name queries; mesothelioma marketing-list review [other_primary]
- Locator
- search_ledger rows sl-uss-barrier-am150-01 through sl-uss-barrier-am150-08
- Finding type
- historical_record
- Finding
- No qualifying ship-specific asbestos record located: no asbestos survey, abatement contract, museum hazmat disclosure, government report, or docketed case naming USS Barrier / AM-150 / MSF-150 was found in the public sources searched (see search_ledger). The only web mentions pairing 'Barrier' with asbestos are name-in-list entries on law-firm marketing pages (mesothelioma.com, mesotheliomaveterans.org, mesothelioma.net) - list placement, not a ship-specific claim. Structural note: the vessel's entire post-USN life was in Soviet custody (1945-1956) ending in scrapping in the USSR, so the U.S.-side custodial record types that generate asbestos documentation for preserved or NDRF-laid hulls (surveys, abatement contracts, donation-condition disclosures) never arose for this hull.
- Verification
- verified
- Role
- negative_finding
- Documentation level
- ship_specific
- Accessed
- 2026-09-22
- Study period
- 2026-09-22
- Limitations
- Absence of a located public record does not prove absence of asbestos aboard - era construction makes period ACM plausible at inference level only. The CourtListener pass is incomplete (daily API quota exhausted mid-session; logged blocked, not failed-by-omission) - litigation status is 'no qualifying case found' on the web sweep, with the structured docket search deferred. Does not establish or defeat any claim of exposure or legal eligibility.
- Atlas source
- true
- Evidence ID
- ev-uss-barrier-am150-06
-
[7]NARA archival leads (unretrieved): RG 24 deck logs for AM-150 (May 1944-July 1945); BuShips contract plans and material specifications for the Admirable class / Tampa hulls (RG 19); Navy Detachment 3294 (Cold Bay) Project Hula records [other_primary]
- Locator
- NARA RG 24 / RG 19 series descriptions; Russell 1997 bibliography
- Finding type
- historical_record
- Finding
- Hull-specific paper records exist at NARA but were not retrieved (no spend authorized): deck logs for AM-150's 14-month U.S. commission (RG 24); Admirable-class contract drawings/specifications and any Tampa Shipbuilding construction records (RG 19); Cold Bay transfer-program records for Navy Detachment 3294. These are the plausible repositories for any ship-specific material or maintenance documentation.
- Verification
- unverified
- Role
- archival_lead
- Documentation level
- ship_specific
- Accessed
- 2026-09-22
- Study period
- 1944-1956 (records); unretrieved 2026-09-22
- Limitations
- Leads only - none retrieved or confirmed to contain asbestos-relevant material. Soviet-era service records for T-335 are outside U.S. holdings; Berezhnoi's Flot SSSR reference (cited by Russell) is the published Soviet-side source.
- Atlas source
- true
- Evidence ID
- ev-uss-barrier-am150-07