USS Siskin (AMS-58)

Evidence

10 evidence entries recorded; each entry has a stable permalink (#ev-1 … #ev-10).

1. [1]Dictionary of American Naval Fighting Ships - 'Siskin' entry (NHHC live page 404 on 2026-09-24 for danfs/s/siskin.html; verbatim text captured from Wayback capture 20220930200447 of history.navy.mil/research/histories/ship-histories/danfs/s/siskin.html) [nhhc_danfs]

   Locator

   DANFS 'Siskin' entry - stats line, full chronology, battle-star closing line

   Finding type

   vessel_history

   Finding

   DANFS entry 'Siskin', NHHC page dated 10 September 2015. Stats line: '(YMS-425: dp. 320 (f.); l. 136'; b. 24'6"; dr. 6'1" (max.); s. 12 k.; cpl. 33; a. 1 3", 2 20mm.; cl. YMS-1)'. Namesake line: 'A small sharp billed finch of temperate Europe and Asia.' Text: 'YMS-425, a motor minesweeper, was laid down on 6 June 1944 by the Astoria Marine Construction Co. at Astoria, Oreg.; launched on 9 September 1944; and placed in service on 21 December 1944, Lt. Gustave J. Blasi, USNR, in command.' Narrative: west-coast shakedown spring/summer 1945; departed San Francisco 10 August 1945 for Pearl Harbor; underway for Okinawa 31 August; Eniwetok 12-14 September, Saipan 19-22 September, Okinawa 28 September; six months sweeping mines in Japanese coastal waters for the occupation forces; departed 11 March 1946; San Francisco Bay 7 May via Saipan, Eniwetok, Johnston Island, Pearl Harbor; Panama Canal to Boston, arriving 7 July 1946; decommissioned 19 July 1946, remained at Boston; 1 September 1947 renamed Siskin (AMS-58) and assigned 1st Naval District, Boston, as Naval Reserve training ship; recommissioned Boston March 1950, Lt. F. W. Cole; MinDiv 42, Norfolk to Panama City, until January 1954; MinDiv 43 with the Naval Mine Countermeasures Station at Panama City January 1954-January 1955; homeport changed to Charleston S.C. November 1954; overhauled at Norfolk January-April 1955; designation changed AMS-58 to MSCO-58 on 7 February 1955; refresher training then normal east-coast operations; arrived Buffalo N.Y. via the St. Lawrence Seaway 17 October 1957; decommissioned there 24 October and resumed Naval Reserve training ship duty; later transferred back to the 1st Naval District at Boston until 1 October 1968, when her name was struck from the Navy list; 'subsequently sold for scrapping.' Closing line: 'YMS-425 received one battle star.'

   Verification

   verified

   Role

   supporting

   Documentation level

   ship_specific

   Accessed

   2026-09-24

   Study period

   1944-1968

   Population

   Astoria Marine Construction Co. construction trades (Astoria OR, 1944); wartime crew (DANFS complement 33); 1st Naval District reservists (1947-50); MinDiv 42/43 and Naval Mine Countermeasures Station personnel (1950-55); Buffalo and Boston NRT-era reservists (1957-68)

   Limitations

   Authoritative identity/history record naming this hull across its Navy designations. Contains no asbestos, materials, or insulation information - supports no asbestos claim. Live NHHC page 404s on 2026-09-24 - the standing NHHC link-rot documented since batch-01; verbatim text cited via the Wayback capture. DANFS stats-line figures (320 t full load, draft 6'1", 12 kts) diverge from the NavSource spec block - all flagged in the correction row. DANFS's account of the post-1957 period (decommissioned at Buffalo, resumed Naval Reserve training duty, later Boston until the 1968 strike) conflicts with NavSource's 'laid up in the Atlantic Reserve Fleet Philadelphia Group' line and is corroborated by 1960-68 digitized deck logs - flagged in the correction row.

   Atlas source

   true

   Evidence ID

   ev-uss-siskin-ams58-01

2. [2]NavSource Online: Mine Warfare Vessel Photo Archive - Siskin (MSC[O] 58) ex-AMS-58 ex-YMS-425, navsource.org/archives/11/05058.htm [other_primary]

   Locator

   NavSource MSC(O)-58 page - chronology block, specifications block, call sign, CO table, photo captions (Boston Navy Yard 4 Jul 1962; NISMF Philadelphia nest)

   Finding type

   vessel_history

   Finding

   NavSource Mine Warfare Vessel Photo Archive entry for Siskin (MSC[O] 58) ex-AMS-58 ex-YMS-425 ('YMS-1 Class Auxiliary Motor Minesweeper' header): laid down 6 June 1944 at Astoria Marine Construction Co., Astoria, Oregon; launched 9 September 1944; commissioned USS YMS-425 21 December 1944; decommissioned 19 July 1946; reclassified Motor Minesweeper and named Siskin (AMS-58) 1 September 1947, placed in service as a Naval Reserve Training Ship, 1st Naval District (Boston); recommissioned March 1950; reclassified Coastal Minesweeper (Old) MSC[O]-58 7 February 1955; 'Decommissioned 24 October 1957 and laid up in the Atlantic Reserve Fleet Philadelphia Group'; struck from the Naval Register 1 October 1968; 'Sold in July 1969. Fate unknown.' Call sign November-Quebec-Juliet-Bravo. Spec block: displacement 270 t.; length 136'; beam 24'6"; draft 8'; speed 14 kts.; complement 33; armament one 3"/50 dual-purpose mount, two 20mm mounts, two .50 cal. machine guns, two depth charge tracks and two depth charge projectors; propulsion two 880shp General Motors 8-268A diesel engines, Snow and Knobstedt single reduction gear, two shafts. Commanding-officer table: LT Gustave J. Blasi USNR (21 Dec 1944 - 19 Jul 1946); LT F. W. Cole USN (March 1950 - Nov 1951); LT Herman S. Frey USN (Nov 1951 - Nov 1952); LT T. Ellis Peak Jr. USNR (Nov 1952 -). Photo captions include: 4 July 1962 Boston Navy Yard, outboard of Billfish (SS 286); and post-strike views berthed at the U.S. Naval Inactive Ship Maintenance Facility (NISMF), Philadelphia Naval Shipyard, nested with sister MSC(O)s incl. Linnet (MSC(O)-24), Reedbird (MSC(O)-51), Lorikeet (MSC(O)-49), Turkey (MSC(O)-56), Falcon (MSC-190), Bold.

   Verification

   partial

   Role

   supporting

   Documentation level

   ship_specific

   Accessed

   2026-09-24

   Study period

   1944-1969

   Population

   Wartime and postwar crew (complement 33); named commanding officers 1944-1952; NRT-era reservists Boston/Buffalo (1947-68)

   Limitations

   Volunteer-maintained secondary compilation, not an official record - corroborated against DANFS where they overlap. Sole source for the call sign, the CO table, the propulsion spec (GM 8-268A / Snow & Knobstedt), the July 1969 sale date, and the photo-caption locations. Its chronology line 'laid up in the Atlantic Reserve Fleet Philadelphia Group' conflicts with DANFS (Buffalo decommissioning then Boston NRT duty to 1968) and with the 1960-68 digitized deck-log run; its own photo captions (Boston Navy Yard July 1962; NISMF Philadelphia post-strike) reconcile it as a probable compression - the Philadelphia lay-up was post-strike, pending disposal. Spec block conflicts with DANFS on displacement (270 vs 320), draft (8' vs 6'1"), speed (14 vs 12 kts) - flagged in the correction row. Contains no asbestos or materials information.

   Atlas source

   true

   Evidence ID

   ev-uss-siskin-ams58-02

3. [3]National Park Service, National Register of Historic Places Registration Form - Astoria Marine Construction Company Historic District, Clatsop County, Oregon (listed January 2014); LoC item or0607; nomination PDF npgallery.nps.gov asset c172f74b-e84e-46fe-bd8e-9b04a773e5d6 [nps]

   Locator

   NRHP nomination narrative (WWII production section) + Appendix 3 Vessel Data Tables, YMS 425 row ('Became USS SISKIN (AMS-58)')

   Finding type

   vessel_history

   Finding

   NPS National Register nomination for the Astoria Marine Construction Company Historic District (listed January 2014; Library of Congress item or0607) documents the builder and the YMS program at this yard: founded 1924 as Astoria Shipbuilding by Joe Dyer on the Lewis and Clark River; first Navy contract February 1941 ($1,312,000 for YMS 100-103); second contract March 1942 (YMS 135-142); December 1942 contracts for four harbor tugs and two wood-hulled PC boats; YP 623-624; Army-Navy 'E' flag 15 August 1944; 39 auxiliary vessels built plus 50 escort carriers and 56 ammunition ships converted at three Astoria locations, ~1500 wartime employees. Program context: 'In order to counter sophisticated influence mines a wood-hulled sweeper was introduced and proved successful. This minesweeper was the YMS'; 'Two 500 horsepower diesel twin-screw engines powered these 136-foot ships' (citing Lott, Most Dangerous Sea); 'In all, 550 YMS's were built at 24 shipyards.' Appendix 3 vessel table row: 'YMS 425 ... 12/21/44 | December 21 1944-June 30 1945 | Became USS SISKIN (AMS-58)' - an official record explicitly tying this hull to the Siskin designation; the adjacent row records sister YMS-424 'Sunk in typhoon October 9 1945 in Okinawa' (Typhoon Louise struck while YMS-425 was operating at Okinawa).

   Verification

   verified

   Role

   supporting

   Documentation level

   ship_specific

   Accessed

   2026-09-24

   Study period

   1941-1945 (nomination WWII significance period)

   Population

   AMCCO wartime workforce (~400 yard payroll expanding to ~1500 across three Astoria locations; ~70 women from April 1943)

   Limitations

   Official federal documentation of the builder and program - names this hull only in the appendix vessel table, which is OCR-mangled in the scan (YMS-425 row prints 'VMS425', a launch/delivery date column reads '9J30/44'); the identity tie and service window are clean, the mangled dates are not relied on (DANFS dates carried instead). The nomination's program totals (550 YMS at 24 yards) conflict with Colton's (561 at 35) - flagged in the correction row. Contains no asbestos or materials information about the hull - documents that the type was wood-hulled with diesel twin-screw plants.

   Atlas source

   true

   Evidence ID

   ev-uss-siskin-ams58-03

4. [4]Shipbuilding History (Tim Colton) - 'Yard Minesweepers (YMS)' table YMS 425 row + program header, and 'Astoria Marine' yard table YMS 425/426 rows; uboat.net Allied Warships - USS YMS-425, ship 9842; navypedia.org YMS class page, YMS425 row + class statistics + project history [other_primary]

   Locator

   shipbuildinghistory.com/smallships/ym.htm YMS-425 row and program header; shipbuildinghistory.com/shipyards/small/astoria.htm YMS 425 and 426 rows; uboat.net/allies/warships/ship/9842.html; navypedia.org/ships/usa/us_sc_pcs_yms.htm YMS425 row and class block

   Finding type

   vessel_history

   Finding

   Secondary compilations corroborate the designation chain and builder: (a) Shipbuilding History (Tim Colton) 'Yard Minesweepers (YMS)' program table row: 'YMS | 425 | Astoria | Astoria OR | 136 | 320 | 21-Dec-44 | Reclassified 1947 as Siskin (AMS 58), scrapped 1968'; program header documents 561 wooden-hulled minesweepers at 35 boatyards, spring 1942 - spring 1945, one 136-ft/13-kt design, Mk. II one-stack group YMS 135-445 - placing this hull in the single-stack group. Colton's Astoria yard table (astoria.htm) carries the same YMS 425 row plus a DEFECTIVE YMS 426 row duplicating Siskin's disposition ('Reclassified 1947 as Siskin (AMS 58), scrapped 1968') - the program table assigns YMS 426 to Mojean & Ericson, Tacoma, delivered 25-Sep-44, struck 1946; the yard-table row is a compiler copy-paste defect, documented in the correction row. (b) uboat.net Allied Warships, USS YMS-425 (ship 9842): 'Minesweeper of the YMS class', Astoria Marine Construction Co., ordered 21 July 1943, laid down 6 June 1944, launched 6 September 1944, commissioned 21 December 1944, end service 24 October 1957; history lines track the designation chain through stricken 1 October 1968. (c) navypedia YMS class table row: 'YMS425, 9.1947- AMS58, 2.1955- MSC(O)58 | 9.1947- Siskin | Astoria Marine | laid 6.1944 | launched 6.9.1944 | comm. 12.1944 | stricken 10.1968'; class table 270 t standard / 320 t full, 39.6 wl / 41.5 oa m, 2.36 m full-load draught, 2 diesels 800 hp, 14 kts, complement 60, armament 1x76/50 + 2x20/70 + DCT/DCR plus mechanical, acoustic and magnetic minesweeping gear; class narrative: design started from the British 105-ft minesweeping boat; 'wood was chosen as construction material'; funnel-count subclasses (two on YMS 1-134, one on YMS 135-445 and 481, none on the rest).

   Verification

   verified

   Role

   supporting

   Documentation level

   ship_specific

   Accessed

   2026-09-24

   Study period

   1944-1969

   Limitations

   Secondary compilations - corroborate builder, designation chain, dates, tonnage class, and the single-stack Mk. II group. uboat.net's 'ordered 21 Jul 1943' and the 6 September launch date (uboat + navypedia vs DANFS/NavSource 9 September) are single-source or minority prints - flagged in the correction row, not carried into record fields except as flagged qualifiers. navypedia's complement 60 conflicts with DANFS/NavSource 33 - class-level variance. Colton's 'scrapped 1968' conflicts with NavSource's 'sold July 1969, fate unknown' and DANFS's 'sold for scrapping' - disposal-chain ambiguity flagged. Neither source contains asbestos information.

   Atlas source

   true

   Evidence ID

   ev-uss-siskin-ams58-04

5. [5]NARA, Special List #44 by ship number (sl-44-ship-number.pdf - YMS block 'YMS-425 | 12/21/1944 | 6/30/1945'); NARA 'Navy Deck Logs Available in the National Archives Catalog' list, 'Siskin (MSCO-58/YMS-425)' panel - 1956-1968 monthly links [other_primary]

   Locator

   archives.gov/files/research/military/logbooks/sl-44-ship-number.pdf (YMS-425 row); archives.gov/research/military/logbooks/navy-online (Siskin panel; first run id 217195328, last 182651502)

   Finding type

   historical_record

   Finding

   NARA deck-log records, two layers located: (a) Special List #44 (List of Logbooks of U.S. Navy Ships, Stations, and Miscellaneous Units, 1801-1947, by ship number) indexes ONE paper deck-log run for this hull: 'YMS-425 | 12/21/1944 - 6/30/1945' - commissioning through the west-coast shakedown; it ends before the Okinawa/Japan minesweeping. SL-44 carries NO AMS-58, MSC(O)-58, or Siskin rows for this hull (index ends 1947); the nearby 'AMC-58 (Rhea)' row is the OTHER ship's logs (the first Rhea, AMc-58 - collision documented in the batch-1742 Rhea record). (b) The NARA 'Navy Deck Logs Available in the National Archives Catalog' list carries this hull as 'Siskin (MSCO-58/YMS-425), Commission December 1944 - Decommission July 1946; Commission March 1950 - Decommission October 1957' with fully digitized monthly logs: ALL of 1956 (12 runs, catalog ids 217195328-217196040), January-October 1957, April-December 1960, ALL of 1961-1967, and January-September 1968 - 124 monthly runs total, ending at the October 1, 1968 strike. The 1960-68 run is itself evidence of the post-decommissioning Naval Reserve training career DANFS describes - in-service craft keep deck logs, laid-up hulls do not. The WWII YMS-425 run is NOT digitized - paper-only at Archives II.

   Verification

   verified

   Role

   archival_lead

   Documentation level

   ship_specific

   Accessed

   2026-09-24

   Study period

   1944-1945 and 1956-1968 records

   Population

   MSC(O)-58 crew and NRT reservists 1956-1968 (log authors); YMS-425 crew 1944-1945

   Limitations

   Verifies that hull-level primary records exist and where: the 1944-45 run is indexed but paper-only (Archives II retrieval required), while 124 monthly runs for 1956-1968 are fully digitized in the National Archives Catalog and retrievable online - neither set's contents were surveyed this pass. The 1947-50 Naval Reserve era and 1950-55 recommissioned era predate the digitized coverage and the log status for those years is unresolved (not in SL-44's window; no digitized runs listed). Nothing in this row is an asbestos finding; deck logs record positions/operations, not materials - though the 124 digitized runs are the best available primary source for this hull's late-service operations, and their existence through 1968 corroborates DANFS's Boston NRT account over NavSource's 'laid up Philadelphia' line.

   Atlas source

   true

   Evidence ID

   ev-uss-siskin-ams58-05

6. [6]Gitto v. A.W. Chesterton Co., Inc., No. 1:07-cv-04771 (S.D.N.Y.), docket 4331985 - Declaration of Jerome H. Block, doc 17, attachment 20 (Exhibit 12 part 2), filed 2007-08-03; reproduced article 'APRIL 1957' LantFleet year-in-review, page bearing Bates FW-MCKEON-00013505 [court_record]

   Locator

   RECAP document gov.uscourts.nysd.306984.17.20.pdf, page 19 of the scanned attachment (independently OCR-verified this pass, pdftoppm + tesseract): 'the coastal minesweeper uss Siskin (MSCO 58) was suecessful in towing to safety the private schooner "Oreda" ... delivered to Miami'

   Finding type

   vessel_history

   Finding

   Litigation-surface artifact that is documentation, not allegation: in Gitto v. A.W. Chesterton Co., Inc., No. 1:07-cv-04771 (S.D.N.Y., filed 2007-06-05, terminated 2007-10-23; suit nature '368 Asbestos personal injury - Prod. Liab.'), plaintiff declaration Exhibit 12 part 2 (RECAP gov.uscourts.nysd.306984.17.20, 23 pp.) reproduces an April 1957 Navy magazine Atlantic-Fleet 1956 year-in-review article. Its rescue-at-sea section states: 'Later in March the coastal minesweeper uss Siskin (MSCO 58) was suecessful [sic] in towing to safety the private schooner "Oreda." The schooner, in a sinking condition when Siskin took her in tow, and her "two-man" crew were safely delivered to Miami. Three days later uss Rhea (MSCO 52) investigated a red flare off Charleston, S. C. ...' - the hull's only CourtListener-indexed appearance is this incidental mention inside a reproduced period article filed as a litigation exhibit; the exhibit is a plaintiff's-era-context document, not a claim that the plaintiff served aboard or was exposed aboard this hull.

   Verification

   verified

   Role

   context

   Documentation level

   ship_specific

   Accessed

   2026-09-24

   Study period

   1956 (event); 2007 (filing)

   Population

   MSC(O)-58 crew, March 1956

   Limitations

   Court-filed reproduction of a Navy periodical - documents this hull's east-coast operations in March 1956 (consistent with DANFS's post-overhaul Charleston-homeport period) and establishes that the hull's lone appearance in the asbestos-litigation index is incidental, not an exposure allegation naming the vessel. It is NOT qualifying asbestos litigation against this hull and establishes nothing about materials aboard. The exhibit's litigation context (plaintiff Salvatore Gitto's supporting declaration) is noted so the docket hit is not misread as an asbestos claim against Siskin. Same exhibit independently verified by the batch-1742 Rhea session for the adjacent MSCO-52 paragraph.

   Atlas source

   true

   Evidence ID

   ev-uss-siskin-ams58-06

7. [7]DANFS 'Siskin' stats line + chronology vs NavSource MSC(O)-58 spec block, chronology and photo captions vs uboat.net ship/9842 vs navypedia YMS425 row and class table vs Colton ym.htm row and astoria.htm yard table vs NPS NRHP nomination [nhhc_danfs]

   Locator

   Field-by-field comparison across the six sources cited

   Finding type

   vessel_history

   Finding

   Source discrepancies documented, not reconciled: (a) displacement - 320 t full load (DANFS stats line, Colton row, navypedia full-load) vs 270 t (NavSource spec block, navypedia standard-load) vs 278d (Colton Astoria yard table) - the standard/full split partially reconciles 270/320; the 278d yard-table print matches neither. (b) draft - 6'1" max (DANFS) vs 8' (NavSource) vs 2.36 m full load (~7 ft 9 in, navypedia). (c) speed - 12 kts (DANFS) vs 14 kts (NavSource, navypedia) vs 13 kts (Wikipedia, Colton program header). (d) complement - 33 (DANFS, NavSource) vs 60 (navypedia class table) - class-level variance; wartime YMS complements fluctuated with fit. (e) armament - DANFS '1 3", 2 20mm.' vs NavSource 'one 3"/50 dual-purpose mount, two 20mm mounts, two .50 cal. machine guns, two depth charge tracks and two depth charge projectors' vs navypedia class '1x76/50 + 2x20/70 + DCT/DCR + mechanical/acoustic/magnetic sweep gear'. (f) launch date - 9 Sep 1944 (DANFS, NavSource) vs 6 Sep 1944 (uboat.net, navypedia). (g) power - NavSource 'two 880shp GM 8-268A' vs navypedia '2 diesels, 800 hp' vs NRHP nomination 'two 500 horsepower diesel twin-screw engines' (citing Lott) - likely per-engine vs aggregate vs design-figure print differences; per-hull installation unverified. (h) post-1957 disposition - DANFS 'decommissioned [Buffalo] 24 October and resumed duty as a Naval Reserve training ship ... transferred back to the 1st Naval District at Boston until 1 October 1968' vs NavSource 'Decommissioned 24 October 1957 and laid up in the Atlantic Reserve Fleet Philadelphia Group' - reconciled by NARA's 124 digitized deck logs through September 1968 and NavSource's own photo captions (Boston Navy Yard 4 July 1962; NISMF Philadelphia post-strike): the Philadelphia lay-up was post-strike pending disposal, not 1957. (i) disposal - 'sold for scrapping' (DANFS) vs 'Sold in July 1969. Fate unknown.' (NavSource) vs 'scrapped 1968' (Colton). (j) YMS program totals - '550 YMS's ... 24 shipyards' (NRHP nomination) vs '561 ... 35 boatyards' (Colton). (k) Colton yard-table defect - astoria.htm assigns YMS 426 to Astoria with Siskin's disposition while ym.htm assigns YMS-426 to Mojean & Ericson, Tacoma - internal inconsistency in one compiler's tables. (l) 'ordered 21 Jul 1943' - uboat.net only.

   Verification

   disputed

   Role

   correction

   Documentation level

   ship_specific

   Accessed

   2026-09-24

   Study period

   1944-1969

   Limitations

   Documents genuine multi-source conflicts so a future pass does not silently pick one figure. The tonnage split (320/270/278) is only partially resolved (standard vs full load); the 1957-68 account is resolved in DANFS's favor by the digitized-log record and NavSource's own photo captions; the disposal wording (sold vs scrapped vs fate unknown, 1968 vs 1969) is unresolved. No asbestos content in any of these sources.

   Atlas source

   true

   Evidence ID

   ev-uss-siskin-ams58-07

8. [8]master-hull-list.json (no matching row); hull-list-verify/master-hull-list.json rows 'USS Siskin | AMS-58' and 'USS YMS-425'; NARA SL-44 AMC-block row 'AMC-58 (Rhea)'; batch-1742 uss-rhea-ams52.atlas.json related_vessels entry 'uss-siskin-msco58' [other_primary]

   Locator

   ships-worktrees/hull-list/master-hull-list.json and hull-list-verify/master-hull-list.json; sl-44-ship-number.pdf AMC block; uss-rhea-ams52.atlas.json

   Finding type

   vessel_history

   Finding

   Name and index collision surface documented: (a) only ONE USS Siskin exists (DANFS: the only Navy ship named for the siskin) - unlike the Rhea case there is no second-hull ambiguity; 'Siskin' collisions are non-vessel: a litigant surname (e.g., Siskin-named parties in employment and bankruptcy matters) and a corporate name (Siskin Steel & Supply Co.) in the CourtListener sweep. (b) NARA SL-44 carries the 'AMC-58 (Rhea)' row near this hull's YMS-425 row - a hull-number collision inside the index itself (the first Rhea, AMc-58, not this hull and not the second Rhea). (c) The project master hull index carries NO row for this hull under any designation (consistent with the batch note 'No PRIMARY all-tier designation match among the documented aliases'), while the verification index carries the SAME hull in two rows ('USS Siskin | AMS-58 | Motor Minesweeper | YMS-1' and 'USS YMS-425 | YMS-425 | Motor Minesweeper | YMS-1') - a duplicate-alias defect, documented here. This record consolidates the AMS-58 and YMS-425 rows for this hull. (d) A sibling record (batch-1742 uss-rhea-ams52) cross-references this hull under the slug 'uss-siskin-msco58' while this record's slug is 'uss-siskin-ams58' - the slug discrepancy is logged for consolidation, not resolved.

   Verification

   verified

   Role

   context

   Documentation level

   ship_specific

   Accessed

   2026-09-24

   Study period

   1944-1969

   Limitations

   Disambiguation context only - establishes that 'Siskin' collisions are surname/corporate (not a second Navy hull), that the master index has no PRIMARY row for this hull, that the verification index duplicates the hull under two aliases, and that a sibling record uses a different slug for this hull. Does not evidence anything about the hull's materials.

   Atlas source

   true

   Evidence ID

   ev-uss-siskin-ams58-08

9. [9]Corn, Jacqueline Karnell, and Jennifer Starr, 'Historical perspective on asbestos: Policies and protective measures in World War II shipbuilding,' American Journal of Industrial Medicine 11(3):359-373 (1987); USNI Proceedings January 1948 (Vol. 74/1/539) 'Saga of a YMS' power-plant description [other_primary]

   Locator

   AJIM 11(3):359-373 article abstract; usni.org/magazines/proceedings/1948/january/saga-yms (live page 403 to automated fetch - same handling as batch-1727 and batch-1742)

   Finding type

   asbestos_application

   Finding

   Era-level inference only: peer-reviewed scholarship documents that asbestos was used extensively as a fireproofing and insulating material in U.S. shipbuilding during WWII - the era and program under which this wooden-hulled minesweeper was built (laid down June 1944). Period marine diesel installations commonly used asbestos-containing gaskets, packing, and exhaust-system insulation; aboard a ~270-320-ton, 136-ft diesel minesweeper the plausible applications, if any, would be confined to such machinery fittings. The class's documented plant - two GM diesel engines on two shafts (NavSource '880shp' 8-268A; NRHP nomination 'two 500 horsepower diesel twin-screw engines' per Lott; navypedia '800 hp') - bounds the machinery envelope; no boiler or steam-line insulation exists to consider. The documented yard event - the January-April 1955 Norfolk overhaul - is a maintenance event that would have disturbed whatever was fitted, but nothing documents the materials themselves.

   Verification

   inferred

   Role

   supporting

   Documentation level

   class_or_era

   Accessed

   2026-09-24

   Study period

   1944-1968

   Population

   AMCCO construction trades (Astoria OR, 1944); wartime crew (DANFS complement 33); Norfolk overhaul workforce (Jan-Apr 1955); NRT-era reservists Boston/Buffalo (1947-68)

   Limitations

   Program/era-level scholarship and a class-level contemporaneous account only - neither names this vessel or documents its materials. Does not establish that asbestos was or is aboard this hull, nor quantity, location, condition, individual exposure, or causation. No class- or design-specific material documentation for YMS-1/YMS-135-class minesweepers was located; the diesel/wooden-hull profile limits plausible scope relative to steam-driven vessels (no boiler-room or steam-line envelope). The machinery-fitting applications named are general era practice, not documented aboard this class; the overhaul event's material scope is entirely undocumented.

   Atlas source

   true

   Evidence ID

   ev-uss-siskin-ams58-09

10. [10]Batch-1748 search ledger (this record): DANFS via Wayback NHHC capture + NavSource transcription; NavSource; Shipbuilding History (ym.htm, astoria.htm); uboat.net; navypedia; NPS NRHP nomination (AMCCO Historic District); NARA SL-44 + digitized-log catalog; CourtListener API v4 (all planned queries executed); MARAD ShipHistory; NVR; hazegray; master-hull-list.json + hull-list-verify; class-profile worktrees [other_primary]

    Locator

    search_ledger rows sl-uss-siskin-ams58-01 through sl-uss-siskin-ams58-18

    Finding type

    historical_record

    Finding

    No qualifying ship-specific asbestos record located: no asbestos survey, abatement contract, hazmat disclosure, court finding, or docketed case naming USS Siskin, YMS-425, AMS-58, or MSC(O)-58 as an exposure site was found in the public sources searched (see search_ledger). CourtListener coverage this pass (authenticated API v4 via fleet limiter) was COMPLETE for the planned query set: 'USS Siskin' returned zero opinions and zero dockets; 'YMS-425' returned zero opinions and zero dockets; 'AMS-58' returned zero opinions and five docket hits - all classified name collisions ('AMS' appearing as a Bates-stamp prefix or unrelated string in labor, contract/product-liability, consumer-credit, patent, and criminal matters; none vessel-related); 'MSCO-58' returned zero opinions and one docket hit - Gitto v. A.W. Chesterton (S.D.N.Y. 2007, asbestos PI), in which 'MSCO 58' appears only inside a reproduced April 1957 Navy magazine article filed as a plaintiff exhibit - an incidental mention, not an allegation naming the hull (see ev-06); a qualified 'Siskin asbestos' sweep returned 5 opinions and 34 dockets, all surname/corporate-name collisions (Siskin Steel & Supply Co. litigation; Siskin as litigant, attorney, or expert-witness name in employment, bankruptcy, insurance, and asbestos-plaintiff matters) - none name the vessel.

    Verification

    verified

    Role

    negative_finding

    Documentation level

    ship_specific

    Accessed

    2026-09-24

    Study period

    2026-09-24

    Limitations

    Absence of a located public record does not prove absence of asbestos aboard - a 1944-built vessel is era-consistent with asbestos-containing machinery fittings even accounting for its lighter diesel insulation load. The hull no longer exists (sold for scrapping 1968-69), so no surveyable structure remains; the disposal chain itself is undocumented past the July 1969 sale. 'No qualifying litigation' is a real negative within COMPLETED CourtListener coverage this pass - every planned query executed - subject to the standing caveat that RECAP indexing is incomplete for older dockets and that unindexed complaints naming the hull cannot be ruled out. Does not establish presence or absence; does not establish or defeat any exposure claim or legal eligibility.

    Atlas source

    true

    Evidence ID

    ev-uss-siskin-ams58-10