Evidence
11 evidence entries recorded; each entry has a stable permalink (#ev-1 … #ev-11).
-
[1]research packet 997-packet.md [other_primary]
- Finding type
- vessel_history
- Finding
- Identity packet verdict: VERIFIED
- Verification
- verified
- Role
- supporting
- Documentation level
- ship_specific
- Evidence ID
- uss-intensity-pg93-pkt-997-packet-md
-
[2]DANFS, Intensity (PG-93) - construction, commissioning, convoy-escort service, decommissioning and disposal (live NHHC page) [nhhc_danfs]
- Locator
- DANFS entry body and spec block
- Finding type
- vessel_history
- Finding
- Documented for this hull: 'one of a group of Canadian corvettes turned over to the Navy and manned by the Coast Guard.' Launched as Milfoil (CN-311) by Morton Engineering & Dry Dock Co., Quebec, Canada, 22 August 1942; taken over by the Navy, renamed, and commissioned at Quebec 31 March 1943, Lt. H. F. Morrison, USCG, in command. Shakedown at Bermuda; returned to New York 5 August 1943 for regular escort duties; steamed between New York and Guantanamo Bay until November 1944, completing over 15 convoy passages; New York patrol duty from 5 November, returning to Caribbean escort in mid-December. Arrived Charleston 29 June 1945; decommissioned there 3 October 1945 and returned to the Maritime Commission. 'In 1950 she was sold to Balleneros Ltd., S.A., Panama, R.P., renamed Olympic Promoter, and converted to a whale catcher.' Spec block: dp. 900; l. 205'; b. 33'; dr. 14'7"; s. 16 k.; cpl. 90; a. 2 3"; cl. Action.
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- 1941-1950 (entry coverage)
- Population
- Morton Engineering construction trades (1941-42); USCG crew (1943-45)
- Limitations
- Ship-specific history only; no asbestos or material content. DANFS's 22 August 1942 launch date conflicts with NavSource/uboat.net/Wikipedia (5 August 1942) - see gaps; DANFS does not state a laid-down date. DANFS's 'in 1950' sale date conflicts with NavSource's 18 October 1946 - see gaps.
- Atlas source
- true
- Evidence ID
- ev-uss-intensity-pg93-01
-
[3]NHHC photographic record NH 97406, USS Intensity (PG-93) - official USCG photograph, plus NARA-held 80-G-450210/450211 leads listed on the mirrored NHC page [nhhc_danfs]
- Locator
- NHHC NH-97406 catalog page; NHC USN Ships page for PG-93 (ibiblio HyperWar mirror) - NARA 80-G-450210/450211 listing
- Finding type
- historical_record
- Finding
- NHHC holds photo NH 97406: 'USS Intensity (PG-93). Underway in the Atlantic, circa mid-1943. This ship had a U.S. Coast Guard crew. Donation of James Jasper, 2000. Official U.S. Coast Guard Photograph, from the collections of the Naval History and Heritage Command.' The mirrored Naval Historical Center ship page further lists NARA-held aerial photographs 80-G-450210 and 80-G-450211, USS Intensity (PG-93) underway 7 September 1943.
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- 1943
- Population
- USCG crew (1943)
- Limitations
- Photographic record only - documents the ship's appearance and USCG manning, not materials. The NARA 80-G items are leads cataloged under Record Group 80 photography; no work or material record attached.
- Atlas source
- true
- Evidence ID
- ev-uss-intensity-pg93-02
-
[4]NavSource Online: Gunboat Photo Archive, USS Intensity (PG 93) / ex-HMS Milfoil (K 288) - timeline, specifications, commanding officer, disposal chain [other_primary]
- Locator
- NavSource 12/09093.htm header block, timeline, specifications block, commanding-officers table
- Finding type
- vessel_history
- Finding
- NavSource timeline for this hull: laid down 11 December 1941 as CN-311 by Morton Engineering and Dry Dock Co., Montreal, Quebec, Canada; named HMS Milfoil (K 288); launched 5 August 1942; acquired by the U.S. Navy at Quebec and commissioned USS Intensity (PG-93), 31 March 1943; decommissioned 3 October 1945 at Charleston, SC; struck from the Naval Register 24 October 1945; transferred to the War Shipping Administration in October 1946 for disposal; sold 18 October 1946 to Balleneros Ltd., S.A., of Panama, converted to a whale catcher and renamed Olympic Promoter; resold to a Japanese company in 1955 and renamed Otori Maru No. 5; broken up in 1966 in Japan. Specifications: 1,375 t.; 205'; 33'; 14'7"; 16.5 kts.; complement 90; two 3"/50 dual-purpose mounts; propulsion: two 3-drum express boilers, Canadian Vickers vertical triple-expansion engine, one shaft. Commanding officer: LT Harold F. Morrison, USCG, from 31 March 1943. Call sign Nan-Xray-Peter-Mike.
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- 1941-1966
- Population
- Morton Engineering construction trades (1941-42); USCG crew (1943-45); Balleneros/Olympic whaling crews (1950s); Japanese whaling crews (to 1966); Japanese shipbreakers (1966)
- Limitations
- NavSource is a volunteer secondary compilation, not a primary registry. Conflicts with DANFS on launch date (5 vs 22 August 1942), disposal (WSA transfer and 18 October 1946 sale to Balleneros vs DANFS 'in 1950'), and Otori Maru resale year (1955 vs Wikipedia's 1965) - see gaps; 'Montreal' builder location conflicts with DANFS/uboat 'Quebec (City)'. Contains no asbestos content. No hazmat or material record for the 1966 breakup located.
- Atlas source
- true
- Evidence ID
- ev-uss-intensity-pg93-03
-
[5]NARA Special List 44 - Named Vessels (Navy logbooks listing): 'Intensity (PG-93) 3/31/1943 - 10/3/1945' [other_primary]
- Locator
- Special List 44 named-vessels table, 'I' section: 'Intensity (PG-93) 3/31/1943 10/3/1945'
- Finding type
- historical_record
- Finding
- The National Archives lists deck logs for USS Intensity (PG-93) covering 31 March 1943 through 3 October 1945 - the hull's entire commissioned career. These logs are a primary-source lead for day-by-day operations, availabilities, and any recorded maintenance activity during her USCG-manned service.
- Verification
- verified
- Role
- archival_lead
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- 1943-1945
- Population
- USCG crew (1943-45)
- Limitations
- Archival lead only: Special List 44 establishes that the logs exist and their date coverage, not their content. Deck logs record operations, not materials - they are a lead for exposure-relevant events (yard availabilities, battle-damage or machinery repairs), not an asbestos record in themselves.
- Atlas source
- true
- Evidence ID
- ev-uss-intensity-pg93-04
-
[6]uboat.net Allied Warships entries: HMS Milfoil (K 288) and USS Intensity (PG-93) - Royal Navy-side construction and transfer record [other_primary]
- Locator
- uboat.net/allies/warships/ship/5614.html (Milfoil) and ship/5615.html (Intensity) - data tables and history lines
- Finding type
- vessel_history
- Finding
- Royal Navy-side record: HMS Milfoil (K 288), Flower (rev.) class corvette, built by Morton Engineering and Dry Dock Co. (Quebec City, Quebec, Canada); ordered 6 October 1941; laid down November 1941; launched 5 August 1942; never commissioned into the Royal Navy; transferred to the United States Navy as USS Intensity. The companion USS Intensity (PG-93) entry carries commissioned 31 March 1943, end of service 3 October 1945, sold into mercantile service - and gives her launch as 22 August 1942, agreeing with DANFS against its own Milfoil page.
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- 1941-1945
- Population
- Morton Engineering construction trades (1941-42)
- Limitations
- Specialist secondary reference, not a primary registry; internally inconsistent on the launch date (5 August on the Milfoil page vs 22 August on the Intensity page) - the conflict mirrors the NavSource-vs-DANFS split and remains unresolved. No asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-intensity-pg93-05
-
[7]U.S. Coast Guard Historian's Office, 'Cutters, Craft, & U.S. Coast Guard Manned Army & Navy Vessels' index (INTENSITY; USS; PG 93 listed); companion article USS Might; PG-94 [other_primary]
- Locator
- USCG Historian cutter index ('I' section); USS Might PG-94 article 2509955
- Finding type
- vessel_history
- Finding
- The USCG Historian's official cutter index lists 'INTENSITY; USS; PG 93' among Coast Guard-manned Navy vessels. No dedicated Intensity article exists on the site; the companion article for sister USS Might (PG-94, CN-312, same builder) documents the class pattern: Morton Engineering & Drydock Co., Ltd., Quebec; USCG command; and 'delivered to the Maritime Commission 18 October 1946 for immediate transfer to her purchaser,' with Balleneros Ltd. ownership as whale catcher Olympic Explorer following from 1950 - the same Maritime-Commission-disposal-then-Balleneros-whaler sequence NavSource compresses for this hull.
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- 1943-1950
- Population
- USCG crews, Action-class gunboats (1942-45)
- Limitations
- The index listing is ship-specific (names this hull); the Might disposal details are class-level parallel only - they corroborate the pattern but do not fix Intensity's dates. USCG index carried no asbestos content. Article-level detail on Might is the official USCG historian record for the sister, not this hull.
- Atlas source
- true
- Evidence ID
- ev-uss-intensity-pg93-06
-
[8]Era inference built on: NavSource specifications block (two 3-drum express boilers, Canadian Vickers vertical triple-expansion engine, one shaft); DANFS spec block and Action-class context (Canadian-built reverse Lend-Lease corvettes, 1941-42, USCG-manned); wartime Canadian corvette construction practice [other_primary]
- Locator
- NavSource specifications block; DANFS spec block and Action (PG-86) entry for class context
- Finding type
- asbestos_application
- Finding
- A coal-era-free, oil-fired steam corvette built 1941-42 sits squarely inside the documented asbestos-use era for marine steam plants: era-standard applications aboard a vessel of this type were boiler insulation, steam-line lagging between boiler room and engine room, valve and flange gaskets, machinery packing, and accommodation-area insulation. Because she was a steam vessel, the boiler/turbine lagging pathway applies; her postwar conversion to a whale catcher kept the same machinery plant in merchant service through the 1950s-60s, extending any retained insulation into the whaling-crew population.
- Verification
- inferred
- Role
- supporting
- Documentation level
- class_or_era
- Accessed
- 2026-10-04
- Study period
- 1941-1966
- Population
- Morton Engineering construction trades (1941-42); USCG crew (1943-45); merchant whaling crews (1946/1950-1966)
- Limitations
- Class/era inference only - no hull-specific insulation survey, material list, work package, or Canadian yard record located for CN-311/PG-93. Names era-standard applications, not confirmed installed materials; no quantity, no manufacturer attribution. Merchant-service retention of original insulation is likewise unverified for this hull.
- Atlas source
- true
- Evidence ID
- ev-uss-intensity-pg93-07
-
[9]GAO, Navy Efforts To Protect Workers From Asbestos Exposure, HRD-80-2 (Oct 18, 1979) [gao]
- Locator
- GAO product page HRD-80-2 (full text blocked, HTTP 403)
- 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 - the program-level backdrop covering this hull's entire Navy service era (1943-45) and prior wartime construction.
- Verification
- verified
- Role
- context
- Documentation level
- class_or_era
- Accessed
- 2026-10-04
- Study period
- 1979
- Population
- Navy shipyard workers; asbestos program review
- Limitations
- Program-level documentation; supports era context only, not any fact specific to this hull. Full text not retrieved (gao.gov returns HTTP 403 to automated fetch, confirmed 2026-10-04) - content via product-page description, consistent with prior batch handling.
- Atlas source
- true
- Evidence ID
- ev-uss-intensity-pg93-08
-
[10]NavSource Online: Welch (PG-93) page - Asheville-class motor gunboat, the second PG-93; corroborated by Wikipedia USS Welch (PG-93) and by law-firm ship lists naming 'USS Welch (PG-93)' [other_primary]
- Locator
- NavSource 12/11093.htm timeline block; mesotheliomaveterans.org and lungcancergroup.com Navy-ships lists (excluded sources, cited for collision documentation only)
- Finding type
- historical_record
- Finding
- CORRECTION / collision guard: hull number PG-93 names two different vessels. This record's hull is USS Intensity (PG-93), 1943-45. The later USS Welch (PGM-93/PG-93) was an Asheville-class motor gunboat laid down 8 May 1967 at Peterson Builders, Sturgeon Bay, Wisconsin; commissioned 8 September 1969 at Boston; decommissioned 20 September 1981; struck 12 April 1995; transferred to the Colombian Coast Guard as Albuquerque (P 111). Law-firm asbestos ship lists carrying 'USS Welch (PG-93)' (mesotheliomaveterans.org, lungcancergroup.com) refer to that later hull, not Intensity - and are excluded sources in any case.
- Verification
- verified
- Role
- correction
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- 1967-1995 (Welch); 2026 (list check)
- Limitations
- Corrects a hull-number collision that would otherwise contaminate 'PG-93' search results (litigation, web lists). Welch data is secondary (NavSource); no asbestos claim is made or implied for either hull by this row. The excluded marketing lists are noted to document the collision, not as sources.
- Atlas source
- true
- Evidence ID
- ev-uss-intensity-pg93-09
-
[11]Batch-8565 search ledger (this record): NHHC DANFS and NH 97406 photo record; NavSource gunboat archive; uboat.net warship entries; NARA Special List 44; USCG Historian's Office index; NVR; GAO product page; secondary web litigation sweep; CourtListener (paced - see ledger) [other_primary]
- Locator
- search_ledger rows sl-uss-intensity-pg93-01 through -13
- Finding type
- historical_record
- Finding
- No qualifying ship-specific asbestos record located: no asbestos survey, abatement contract, hazmat disclosure, insulation material list, or verified litigation naming USS Intensity (PG-93) / HMS Milfoil (K 288) was found in the public sources searched (see search_ledger). CourtListener could not be queried this session - fleet-wide pacing budget momentarily exhausted across six spaced attempts; logged as blocked in the search ledger, NOT as a negative result. The secondary web sweep surfaced no qualifying case naming this hull; 'PG-93' asbestos hits resolve to USS Welch (PG-93), a different, later vessel (see ev-09).
- 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 - era-consistent inference (steam plant, 1941-42 wartime build) makes retained asbestos plausible but unproven for this hull. The litigation-repository gap is genuine and open: CourtListener queries are pending retry. Canadian wartime yard records (Morton Engineering) are undigitized; NARA deck logs and RG 19 records are the open leads.
- Atlas source
- true
- Evidence ID
- ev-uss-intensity-pg93-10