Evidence
11 evidence entries recorded; each entry has a stable permalink (#ev-1 … #ev-11).
-
[1]research packet 1011-packet.md (2 sources cited) [other_primary]
- Finding type
- vessel_history
- Finding
- Identity packet verdict: VERIFIED (distinct vessel; genuine name reuse, NOT a queue error)
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Evidence ID
- uss-cythera-py31-pkt-1011-packet-md
-
[2]DANFS, 'Cythera II (PY-31)' - NHHC official entry (live page returned 404 on 2026-10-04; verbatim text via Wayback capture 2025-04-23). NOTE: the losthistory.net/hazegray transcription of this same entry reads 'built in 1931 as Abril' - a transcription error; the NHHC entry reads 'built in 1931 as Argosy.' [nhhc_danfs]
- Locator
- DANFS entry 'Cythera II (PY-31)', full service narrative + spec block
- Finding type
- vessel_history
- Finding
- Documented for this hull: 'The second Cythera (PY-31) was built in 1931 as Argosy by Germania Werft, Kiel, Germany; purchased by the Navy 14 July 1942; and commissioned 26 October 1942, Lieutenant J. Z. Howell, USNR, in command.' Assigned to the Gulf Sea Frontier: exercises for the Small Craft Training Center at Miami and convoy escort to Galveston, Tex., and Guantanamo Bay, Cuba, until clearing Key West 16 March 1943 for New York (arrived 21 March). Eastern Sea Frontier convoy escort New York-southern ports until 22 September 1943. Reassigned to the 3d Naval District; sailed to New London 22 December 1943 for duty with the Underwater Sound Laboratory; decommissioned 3 January 1944 and placed in service; submarine training exercises and experimental sonar operations out of New London until 18 January 1945; Port Everglades, Fla. (arrived 23 January) with the Antisubmarine Development Operational Detachment, Atlantic Fleet, conducting experimental operations with submarines until 24 April 1945; New London 29 April-12 November 1945 'for overhaul and training operations with submarines'; Key West voyage, return 28 November 1945; New York 30 January 1946; placed out of service 14 March 1946; transferred to the Maritime Commission for disposal 6 November 1946. Spec block: dp. 800 (f.); l. 205'7"; b. 30'; dr. 10'10"; s. 15k.; cpl. 74; a. 1 3".
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- 1942-1946
- Population
- Crew (cpl. 74, DANFS); conversion/shipyard trades 1942 (yard undocumented); Underwater Sound Laboratory and submarine training populations 1943-46
- Limitations
- Ship-specific service chronology only - no asbestos, material, conversion-yard, or overhaul-scope content. 'Overhaul' at New London Apr-Nov 1945 is undocumented as to facility (submarine base vs. commercial yard). Live NHHC URL returned 404 on 2026-10-04; archived capture cited. The hazegray mirror transcription of this entry contains a name error ('Abril' for 'Argosy').
- Atlas source
- true
- Evidence ID
- ev-uss-cythera-py31-01
-
[3]NavSource Online: Patrol Yacht Photo Archive, 'INS Maoz (K 24) ex-USS Cythera (PY 31)' - designation timeline, specifications, and photo captions (live navsource.net URL verified 2026-10-04) [other_primary]
- Locator
- NavSource 12/1331.htm - header timeline, specifications block, photo captions
- Finding type
- vessel_history
- Finding
- NavSource timeline for this hull: built 1931 as Argosy by Germaniawerft, Kiel; purchased by the Navy 14 July 1942; commissioned USS Cythera (PY-31) 26 October 1942; decommissioned 3 January 1944 and placed in service; out of service 14 March 1946 at New York; transferred to the Maritime Commission 6 November 1946; sold 1946 to the Thyne Shipping Co.; renamed Abril; renamed Ben Hecht; placed in service 1948 with the Israeli Navy as INS Maoz (K 24); sold 1956 to an Israeli businessman, renamed Abril; acquired by Navigazione Libera di Golfo (Italy), renamed Santa Maria del Mare, ferry in the Gulf of Naples; sold 2008, refitted and renamed Rossy One; 'fate unknown.' Photo captions document: MV Abril anchored in Brooklyn's Gowanus Canal 'before undergoing repairs' c. October 1946; MV Ben Hecht 'being intercepted by British destroyer HMS Chieftain (R 36)' 8 March 1947; an Italian-made 76-mm gun from INS Maoz (K-24) displayed in the Clandestine Immigration and Naval Museum, Haifa. Call sign Nan-Baker-William-Peter. Specs: 800 t; 205'7"; 30'; 10'10"; 15 kts.; complement 74; one 3"/50 dual purpose mount; 'two 1,800bhp Atlas diesel engines, two shafts.'
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- 1931-2008+
- Population
- Crew (USN 1942-46); Gowanus Canal repair workforce (1946); Ben Hecht crew of ~20-27 American volunteers plus ~600 passengers (1947); INS Maoz crew (1948-56); ferry crews; refit trades (2008-11)
- Limitations
- NavSource is a volunteer secondary compilation, not a primary registry - milestone dates track DANFS/NVR but rest on contributor sourcing. 'Thyne Shipping Co.' conflicts with 'Tyre Shipping Company' in the Ben Hecht memoir and specialist press (see gaps). 'Atlas diesel' spec conflicts with navypedia's 'Krupp' engines (see gaps). Page ends her story at Rossy One with 'fate unknown' - later movement to Germany is documented only in yachting press (ev-07). No asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-cythera-py31-02
-
[4]Summary Technical Report of Division 6, NDRC, Volume 16: 'Underwater Sound Equipment III - Scanning Sonar Systems' (Office of Scientific Research and Development / NDRC, Washington DC, 1946; prepared by Columbia University Division of War Research under contract OEMsr-1131). DTIC accession AD0214253 (live apps.dtic.mil fetch returned HTTP 403 on 2026-10-04; full text via Wayback capture 2025-12-07) [other_primary]
- Locator
- AD0214253 Vol. 16: 'Historical Development' pp. 11-13 (Sardonyx/Cythera Model 1 and 2 installations); ASAP-installation and drydock passage ~pp. 167-168; commutator/transmitter sections and figures (incl. Figure 5 HP-3DS; speed-of-Cythera data table)
- Finding type
- historical_record
- Finding
- Federal primary documentation of this hull as a sonar test platform (~60 name mentions): Harvard Underwater Sound Laboratory (HUSL) QH scanning-sonar Experimental Model 1 was transferred to USS CYTHERA 'for more extensive tests' after trials on USS SARDONYX - 'much data pertinent to the general operation of a QH system' obtained aboard her 'during the spring and summer of 1944,' with submarine-target echoes to ~2,000 yards and bearings accurate within ~2 degrees. QH Model 2 (Serial 1) was 'installed on the USS CYTHERA early in September 1944' (36-element 22-kc HP-2B transducer, radial-disk commutators). In December 1944 Model 2 was transferred to USS BABBITT and 'a depth-scanning sonar system installed on the CYTHERA.' An ASAP attack-plotter integration installation was also fitted aboard, but 'no time was available for making sea test runs with this equipment, because USS CYTHERA went to drydock for installation of the 26-kc' transducer. Figure 5 documents the HP-3DS installation aboard; ship-speed trial data ('Speed of USS CYTHERA - in knots') appears in the test sections.
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- 1944-1945 (installations/tests); report published 1946
- Population
- HUSL/USL research personnel embarked aboard; Cythera in-service crew (1944-45); drydock trades for the 26-kc transducer installation (facility undocumented)
- Limitations
- Ship-specific experimental-equipment record - documents repeated modification and at least one drydock availability aboard this hull, but contains no asbestos or shipyard-workforce content. Volume was CONFIDENTIAL at printing (1946), declassified. OCR extraction used for review; page images are the authoritative text. Names HUSL (Harvard) as equipment developer; the host command per DANFS was the Navy's Underwater Sound Laboratory at New London - two distinct labs are involved and the report does not name her operating base.
- Atlas source
- true
- Evidence ID
- ev-uss-cythera-py31-03
-
[5]NARA catalog (catalog.archives.gov proxy API): WWII command war diaries whose OCR'd text matches 'Cythera (PY-31)' - COMGULFSEAFRON war diaries Nov-Dec 1942, Jan-Apr/Jun/Aug-Sep 1943 (NAIDs 134030619, 134038251, 134072191, 134109041, 134137117, 134196643, 134272523, 135948856, 78207301); NOB Key West war diaries Mar/Apr/Sep 1943, Nov 1945 (134140755, 134180666, 78187886, 140086284); COMEASTSEAFRON Mar-Aug 1943 (134266939, 78273434, 78269538, 78301520, 78310667, 78281915); COM NY GR EASTSEAFRON Mar-Apr 1943 (134266939, 134267140). Scanned images via Fold3 partnership. [other_primary]
- Locator
- NARA catalog query 'Cythera (PY-31)' - war-diary file units listed in citation_value; RG 38 (WWII war diaries); NHHC NH-93217 via Wayback (2023-01-13 capture)
- Finding type
- historical_record
- Finding
- Digitized WWII command war diaries at NARA OCR-match 'Cythera (PY-31)' across her Gulf Sea Frontier (Nov 1942-Mar 1943), Eastern Sea Frontier (Mar-Sep 1943), and Key West operating windows - the document population expected to hold her convoy-escort orders, arrivals, and operational reports. Separate file units 'Cythera (PY-26), 3/3/42-5/1/42' (NAIDs 125730790, 125730994) are the other hull's diary - the two must not be conflated. NHHC photo NH 93217 ('USS CYTHERA (PY-31), 10 November 1943') is an official numbered print (live NHHC page 404s; Wayback captures 2016-2025).
- Verification
- partial
- Role
- archival_lead
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- 1942-1945
- Population
- Gulf/Eastern Sea Frontier convoy organization (1942-43); NOB Key West personnel (1943, 1945)
- Limitations
- Archival lead only: OCR-level catalog matches were not page-verified - a name hit inside a war diary may be an appendix vessel-listing rather than an operational entry. Deck logs for this hull (RG 24) are not digitized. War-diary content is operations-level and rarely addresses shipboard materials; no asbestos content should be expected or is asserted.
- Atlas source
- true
- Evidence ID
- ev-uss-cythera-py31-04
-
[6]U.S. Holocaust Memorial Museum, Holocaust Encyclopedia, 'Ben Hecht' (author: United States Holocaust Memorial Museum) + Samuel Flaks, 'Mercy Ship: A Memoir of the Ben Hecht,' Conversations 40, Institute for Jewish Ideas and Ideals (jewishideas.org; live page HTTP 410 on 2026-10-04 - via Wayback capture 2024-02-12) + David S. Wyman Institute for Holocaust Studies, 'The Bergson Group, Voyage of the Ben Hecht' (new.wymaninstitute.org) [museum_official]
- Locator
- USHMM encyclopedia 'Ben Hecht'; jewishideas.org Flaks memoir (Wayback 2024-02-12); wymaninstitute.org Ben Hecht photo-history (crew roster, Acre imprisonment); NavSource interception photo caption
- Finding type
- historical_record
- Finding
- Post-USN history of this hull is documented by museum/scholarly sources: the Bergson Group (Irgun-linked activists led by Hillel Kook/Peter Bergson) bought the surplus vessel via the Tyre Shipping Company shell for $36,400 in 1946 (Flaks memoir; next-highest bid $36,000); USHMM confirms 'one of the Aliyah Bet ("illegal" immigration) ships sent by the Irgun bore Hecht's name.' Re-flagged MS Abril, she underwent a >$100,000 retrofit in Brooklyn's Gowanus Canal to carry ~600 passengers; FBI agents searched her in New York the evening before departure (26 December 1946) and found only life jackets (marineforum). She departed New York 27 December 1946, embarked Jewish displaced persons at Port-de-Bouc, France, was renamed MS Ben Hecht after sailing 1 March 1947, and was intercepted off the Palestine coast on 8 March 1947 by HMS Chieftain - boarded without resistance, towed into Haifa pre-dawn 9 March. Passengers were deported to Cyprus camps; the ~20-27-man American crew was imprisoned at Acre for about a month, then shipped back to New York (crew list documented at Wyman Institute; NavSource photo caption dates the interception image 8 March 1947).
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- 1946-1948
- Population
- Ben Hecht crew ~19-21 American volunteers + 2 paid Norwegian engineers (per memoir); ~597-600 passengers; Gowanus Canal retrofit trades (Oct-Dec 1946)
- Limitations
- Post-Navy history; establishes vessel identity and the 1946-47 Gowanus retrofit (a New York shipyard-era work event with no recorded scope detail), not materials. Passenger count varies by source (597/600/'over 600'/~800 in Wyman headline framing). NavalCoverMuseum's '12 March 1946' interception date is an error (see ev-09). No asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-cythera-py31-05
-
[7]MarineForum (journal of the German Maritime Institute / Naval Officers' Association), 'Seven lives, seven adventures,' 16 Jan 2023; corroborated by YachtBuyer vessel dossier ('Argossy,' ex names Argosy/Vita/Abril/Satira/Santa Maria Del Mare/USS Cythera PY-31/Cythera/Ben Hecht/INS Maoz K-24/Rossy One; flag Malta) and SuperYacht Times/ouryachtworld.com tracking reports [reputable_press]
- Locator
- marineforum.online/en/seven-lives-seven-adventures/; yachtbuyer.com/en/fleet/argossy-232-krupp-germaniawerft; ouryachtworld.com/archives/8208; superyachttimes.com Endeavour/Argossy coverage
- Finding type
- vessel_history
- Finding
- This hull survives. Specialist maritime press documents: Israeli Navy service as INS Maoz (K-24) including participation in the sinking of the Egyptian flagship El Amir Farouq (Operation Yoav, October 1948) and the 1956 Sinai campaign; sale to an Israeli businessman in 1956 (renamed Abril); Navigazione Libera del Golfo ferry Santa Maria del Mare in the Gulf of Naples for ~14 years; 2008 purchase for reconversion to a yacht as Rossy One - a rebuild that 'included replacing 80 per cent of the underwater hull' plus 'the dilapidated electrics, pumps and valves, all pipework, engine, shaft and propeller' and a new teak deck, ~90% complete when funding failed in 2011; renamed White Lady, laid up at Naples 2014; sold at a Naples auction March 2021; discharged from a carrier at Brake, Germany 3 January 2022 and towed up the Weser; reported under refit at Lemwerder. Current name Argossy (Malta flag per YachtBuyer).
- Verification
- partial
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- 1948-2023
- Population
- INS Maoz crew (1948-56); ferry passengers/crew (Gulf of Naples); refit workforce Naples (2008-11); Lemwerder refit trades (2022-)
- Limitations
- Specialist/secondary press - milestone-level agreement with NavSource but finer details (auction date, Brake arrival, Lemwerder yard) rest on single-source reporting; current restoration status unverified beyond 2023 coverage. The 2008-11 rebuild describes near-total machinery and underwater-hull replacement - material-relevant to any residual original fabric - but no asbestos disclosure appears in the coverage. MarineForum's 'Sopwith bought in 1935' conflicts with the 1934 America's Cup shadowing narrative in other sources (see gaps).
- Atlas source
- true
- Evidence ID
- ev-uss-cythera-py31-06
-
[8]GAO, Navy Efforts To Protect Workers From Asbestos Exposure, HRD-80-2 (Oct 18, 1979) [gao]
- Locator
- GAO product page HRD-80-2
- Finding type
- gov_survey
- Finding
- GAO documented that the Navy used asbestos insulation extensively aboard ships and did not begin substituting alternative insulation materials until the early 1970s - spanning this hull's entire U.S. Navy window (1942 conversion, 1942-46 service, 1945 New London overhaul).
- Verification
- verified
- Role
- context
- Documentation level
- class_or_era
- Accessed
- 2026-10-04
- Study period
- 1979 (report); Navy-wide use era through early 1970s
- Population
- Navy shipyard workers (program context)
- Limitations
- Program-level documentation; supports era context only, not any fact specific to this hull. Fieldwork yards were Long Beach and Norfolk Navy yards - neither documented as working this vessel. Full text not retrieved (gao.gov blocks automated fetch, HTTP 403, confirmed 2026-10-04); content via product-page description.
- Atlas source
- true
- Evidence ID
- ev-uss-cythera-py31-07
-
[9]Era inference built on: DANFS spec block and service narrative (ev-01); NavSource/navypedia propulsion specs (diesel, twin screw); NDRC Division 6 Vol. 16 documenting repeated equipment installations and a drydock availability aboard this hull (ev-03); DANFS-documented New London overhaul 29 Apr-12 Nov 1945; GAO HRD-80-2 era documentation (ev-07) [other_primary]
- Locator
- ev-01, ev-03, ev-07 locators as cited
- Finding type
- asbestos_application
- Finding
- A 1931 German-built diesel motor yacht acquired for U.S. Navy service in mid-1942 sits inside the documented wartime naval-materials era: U.S. conversion and outfitting of the period standardly employed asbestos-containing thermal insulation, gaskets, packing, electrical insulation, and fireproof/joiner materials; documented events aboard this hull - the 1942 patrol-yacht conversion (yard undocumented), repeated sonar-system installations 1944-45 including a drydock transducer fitting, and the Apr-Nov 1945 New London overhaul - are the plausible disturbance/insertion points. As a diesel vessel she carried no boilers or steam turbines, so the boiler/turbine-lagging pathway does not apply; the relevant era-standard applications are diesel-exhaust lagging, machinery-space insulation, gaskets, valve packing, electrical insulation, and accommodation fireproofing.
- Verification
- inferred
- Role
- supporting
- Documentation level
- class_or_era
- Accessed
- 2026-10-04
- Study period
- 1931-1946 (construction/conversion/service); disturbance events through 2022
- Population
- 1942 conversion trades (yard undocumented); USN crew 1942-46; New London overhaul workforce 1945; later retrofit/rebuild workforces (1946 Gowanus; 1948 Israel gunship conversion; 2008-11 Naples; 2022- Lemwerder)
- Limitations
- Class/era inference only - no hull-specific insulation schedule, work package, or material list located for PY-31. Names era-standard applications, not confirmed installed materials. No quantity. Conversion yard undocumented, so no yard-level asbestos record (e.g., a NIOSH-style yard survey) can be attached. The German 1931 build lies outside U.S. Navy material specification entirely - German-era material is a separate inference with no located documentation.
- Atlas source
- true
- Evidence ID
- ev-uss-cythera-py31-08
-
[10]NavalCoverMuseum (Naval Cover Museum wiki), 'CYTHERA PY 31' - name/designation history and postmark record; NavSource 'OVERDUE ATLANTIC - USS CYTHERA (PY 26)' article 12/170575s.htm for the other-hull distinction [other_primary]
- Locator
- navalcovermuseum.org/wiki/CYTHERA_PY_31 designation table; navsource.net/archives/12/170575s.htm (PY-26 article); archived NHHC DANFS text (ev-01) vs hazegray py31.htm; navypedia Maoz page; marineforum article
- Finding type
- historical_record
- Finding
- CORRECTIONS / DISAMBIGUATION: (1) USS Cythera (PY-31) must not be conflated with USS Cythera (PY-26), ex-yacht Agawa (Ramage & Ferguson, 1906; SP-575 in WWI) - PY-26 was torpedoed and sunk by U-402 off North Carolina 2 May 1942 with 69 dead; per NavSource, the name was recycled to this hull (yacht Abril) 'in keeping with the US Navy tradition of retaining the names of lost warships.' Litigation or records citing 'Cythera' without hull number require hull attribution. (2) NavalCoverMuseum's designation history misdates the Ben Hecht interception to '12 March 1946' - the documented date is 8 March 1947 (NavSource interception photo caption; navypedia dates the event 9.3.1947 - interception the afternoon of 8 March, towed into Haifa pre-dawn 9 March reconciles the two), a wrong day AND wrong year in the museum table. (3) The hazegray/losthistory.net DANFS transcription reads 'built in 1931 as Abril' - the live NHHC entry reads 'as Argosy' (verified on the archived NHHC page); Abril was her third name, not her build name. (4) Israeli pennant number: K-24 (NavSource, navypedia, museum caption) vs 'K 234' (Wikipedia) - K-24 carried. (5) An interim name 'Satira' appears in the name chain per navypedia and specialist press (post-Cythera, pre-Ben Hecht), absent from NavSource's timeline.
- Verification
- verified
- Role
- correction
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- 1942-1948 (disambiguation window)
- Limitations
- Corrects circulating errors, not material claims. The PY-26 vs PY-31 distinction is verified against two NavSource pages and DANFS numbering; the remaining items are secondary-source discrepancies logged for downstream users, several also carried in gaps.
- Atlas source
- true
- Evidence ID
- ev-uss-cythera-py31-09
-
[11]Batch-8668 search ledger (this record): DANFS via archived NHHC page; NavSource (live .net); NDRC AD0214253 via Wayback; NARA catalog API; USHMM encyclopedia; Wyman Institute; Flaks memoir via Wayback; NavalCoverMuseum; navypedia; specialist yachting press (marineforum, YachtBuyer, ouryachtworld, SuperYacht Times); CourtListener base queries; secondary web litigation sweep [other_primary]
- Locator
- search_ledger rows sl-uss-cythera-py31-01 through -13
- Finding type
- historical_record
- Finding
- No qualifying ship-specific asbestos record located: no asbestos survey, abatement contract, hazmat disclosure, or verified litigation naming USS Cythera (PY-31) was found in the public sources searched (see search_ledger). The detailed 2008-2011 rebuild coverage describes wholesale replacement of machinery, pipework, electrics, and ~80% of the underwater hull but contains no asbestos mention. Secondary web sweeps surfaced no law-firm or marketing asbestos claim naming this hull - unusual among WWII hulls and consistent with its diesel-yacht plant. CourtListener base queries could not be completed this session (fleet pacing, HTTP 429 guidance - logged in search_ledger, not treated as a negative result).
- Verification
- verified
- Role
- negative_finding
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- 2026-10-04
- Limitations
- Absence of a located public record does not prove absence of asbestos aboard - 1942-46 U.S. Navy service sat squarely inside the documented era of Navy asbestos use. The litigation repository search is an open gap (paced, not run). Undigitized leads: NARA RG 24 deck logs; 1942 conversion work papers; 1945 New London overhaul records; Israeli Navy refit records. Does not establish or defeat any claim of exposure or legal eligibility.
- Atlas source
- true
- Evidence ID
- ev-uss-cythera-py31-10