Evidence
24 evidence entries recorded; each entry has a stable permalink (#ev-1 … #ev-24).
-
[1]research packet 922-packet.md [other_primary]
- Finding type
- vessel_history
- Finding
- Identity packet verdict: PHANTOM
- Verification
- verified
- Role
- negative_finding
- Documentation level
- ship_specific
- Evidence ID
- uss-sc-670-sc670-pkt-922-packet-md
-
[2]Dictionary of American Naval Fighting Ships (DANFS) appendix, 'SC-601 - SC-700' roster, Naval History and Heritage Command [nhhc_danfs]
- Locator
- SC-670 entry within the SC-601 - SC-700 roster list
- Finding type
- vessel_history
- Finding
- Official Navy roster entry for this hull: 'SC-670. Built at Inland Waterways, Inc., Duluth, Minn. Keel laid 11/17/41. Launched 7/6/42. Commissioned 9/2/42. Transferred to the Coast Guard 3/19/46.' Same page confirms hull numbers SC-601 through SC-627 were not used - the SC-497-class block begins at SC-628.
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1941-1946
- Population
- SC-670 crew
- Limitations
- Roster data only - no narrative DANFS entry exists for SC-670 (NavSource confirms 'There is no DANFS history available for SC-670'). Entry gives no strike date, no sale date, no Coast Guard name, and no PC-670 designation; those rest on other sources. No asbestos or material content.
- Atlas source
- true
- Evidence ID
- ev-uss-sc-670-01
-
[3]NavSource Online, Submarine Chaser Photo Archive: USCGC Air Grebe (WAVR 426) ex-USS SC-670 ex-USS PC-670 - timeline, specifications, commanding-officer list [other_primary]
- Locator
- SC-670 / USCGC Air Grebe (WAVR 426) archive page, specifications block, CO list
- Finding type
- vessel_history
- Finding
- NavSource timeline for this hull: laid down 17 November 1941 by Inland Waterways, Inc., Duluth, MN; launched 6 July 1942; delivered 2 September 1942 and commissioned USS PC-670; reclassified SC-670 in April 1943; decommissioned 19 March 1946, transferred to the Coast Guard and commissioned USCGC Air Grebe (WAVR 426); struck from the Naval Register 28 March 1946; sold 19 January 1948 to Arthur V. Nelson of Seattle, WA, renamed Grebe (fishing boat); acquired 1949 Trygve A. Roth, 1951 William M. Everitt (Seattle), 1980 Ted Morehouse (Cordova, AK, freighter), 1989 Francis O. Samuelson (Cordova); out of documentation 2000; fate unknown. Specifications: 94 t., 110'10" x 17' x 6'6", 21 kts, complement 28, one 40mm + two .50 cal + two Y-guns + two DC tracks, two GM (EMD) 16-184A diesels 1,540 bhp, two shafts. CO list: LT Richard S. Paret (2 Sep 1942), LTJG Wayne E. Bowman (Jan 1944), LTJG R. C. Crary (1945). No photo of SC-670 on file.
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1941-2000
- Population
- SC-670 crew (complement 28); subsequent Coast Guard and civilian owners
- Limitations
- NavSource is a volunteer secondary compilation, not a primary registry. The PC-670 commissioning designation and the April 1943 reclassification rest on NavSource alone at this writing - the ship's own September 1942 muster roll and the NHHC roster already style her SC-670, so the PC designation may be contract-paperwork only (see gaps and the correction row). CO dates are secondary and conflict with the muster roll on Bowman's accession (see gaps). No asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-sc-670-02
-
[4]Ships of the U.S. Navy, 1940-1945 (Navy-published index; HyperWar/ibiblio transcription), Submarine Chasers (Wooden Hull), SC-497 Class table [other_primary]
- Locator
- SC-497 Class table, 'SC-667-672' row
- Finding type
- vessel_history
- Finding
- The wartime official Navy index lists SC-670 inside the SC-667-672 entry of the SC-497 class table, commissioning window 1942-44, with no loss or lend-lease note. Class block data: 98 tons, 110'10" x 17' x 6'6", 20 knots, 1 x 3"/50 + 2x2 .50-cal mg, complement 2 officers + 20 enlisted, diesel twin screws 1,200 shp.
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1942-1945
- Population
- SC-670 crew
- Limitations
- Compiled wartime index - corroborates class, number, and era but adds no hull-specific detail; class figures conflict with NavSource specifications for this hull (displacement 98 vs 94 t., complement 22 vs 28, armament 3"/50 vs 40mm - likely early-vs-late fit). No asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-sc-670-03
-
[5]NARA file unit 'SC-670, 9/2/42-3/19/46' (NAID 192205255), RG 24 Records of the Bureau of Naval Personnel, series Muster Rolls of U.S. Navy Ships, Stations, and Other Naval Activities, Roll 6792 - 182 digitized frames [other_primary]
- Locator
- File unit NAID 192205255, Roll 6792; forwarding sheets at frames ~5 and ~25; reports of changes at frames ~15 and ~55
- Finding type
- historical_record
- Finding
- The ship's quarterly muster rolls and monthly reports of changes are digitized at NARA for the full commissioned span (commissioning 2 Sep 1942 through Coast Guard transfer 19 Mar 1946). Frames verified: the September 1942 quarterly roll is headed 'U.S.S. SC-670 (placed in full commission Sept. 2, 1942)' - the hull's own records use SC-670 from commissioning; the October 1942 forwarding sheet was sent 'From SubChaser Training Center'; reports of changes list named enlisted crew with service numbers, rates, and enlistment places; the forwarding sheet for the quarter ending 31 March 1943 is approved by 'WAYNE E. BOWMAN, Lieut.(jg) USNR, Commanding Officer' on 5 April 1943 - Bowman was already in command nearly a year before NavSource's January 1944 accession date.
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1942-1946
- Population
- SC-670 enlisted crew and officers, September 1942 - March 1946 (roll-level population for any service-period exposure assessment)
- Limitations
- Personnel record, not a material or exposure record: establishes crew identity and size, not asbestos. 182 frames cover the full span but were sampled (frames ~5-60) rather than read end-to-end; individual name/rate lists were not transcribed into this record. Officer signatures give primary-source CO dates that supersede NavSource's secondary CO table (see gaps).
- Atlas source
- true
- Evidence ID
- ev-uss-sc-670-04
-
[6]NARA file unit 'NSB MOREHEAD CITY, NC - War Diary, 9/1-30/42 (Enc A)' (NAID 133988016), RG 38 WWII War Diaries - Section Base Morehead City NC daily operations log, 27-30 September 1942; corroborated by 'NOB KEY WEST - War Diary, 10/1-31/42 (Enc A)' (NAID 133996476), ship-movement tables for 7, 15, 18 October 1942 [other_primary]
- Locator
- NAID 133988016 objects 37-41 (entries 27-30 Sep 1942); NAID 133996476 objects 14, 25, 32 (ship-movement tables 7, 15, 18 Oct 1942)
- Finding type
- historical_record
- Finding
- Contemporaneous station logs document SC-670's first employment on the U.S. east coast within weeks of her 2 September 1942 commissioning at Duluth. Morehead City NC, 27-30 September 1942: 'SC 670 docked at Section Base' (27 Sep); on 28 September the Norfolk controller 'informed Section Base that the SC 670 was to stand by, and act as an escort for the Speedwell'; 30 September 'SC 670 departed SP' and 'SC 670 docked at Port Terminal'. NOB Key West FL ship-movement tables log SC-670 sorties 7, 15, and 18 October 1942 alongside other SCs, CGCs, and YMS craft.
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- September-October 1942
- Population
- SC-670 crew
- Limitations
- Establishes presence and tasking (docking, escort standby, daily sorties) - not what the patrols accomplished. Digitized pages read by this record: Morehead City objects 37-41 (27-30 Sep) and Key West objects 14, 25, 32 (7, 15, 18 Oct); other October sortie days were not line-read. No asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-sc-670-05
-
[7]NARA file unit 'COM NARRAGANSETT GR, ESF - War Diary, 4/1-30/43' (NAID 78355750), RG 38 WWII War Diaries - 'Composition and employment of surface forces' tables [other_primary]
- Locator
- NAID 78355750, 'Composition and employment of surface forces' tables, objects ~49, 55, 110 of 195
- Finding type
- historical_record
- Finding
- The Commander, Narragansett Group, Eastern Sea Frontier war diary for April 1943 lists SC-670 in the surface-force employment tables on patrol assignment: entries place her on patrol sectors 'Victor' and 'Uncle' and on sound-contact/escort runs in the Narragansett Bay - Block Island Sound area during April 1943, alongside CG cutters and district patrol craft.
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- April 1943
- Population
- SC-670 crew
- Limitations
- Assignment-table entries only - they place the hull on ESF patrol sectors but do not narrate individual sorties. 195-page file unit located by OCR-assisted page scan (objects 49, 55, 110); entries are table-formatted and partially illegible in microfilm. No asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-sc-670-06
-
[8]NARA file unit 'USS RICHMOND - War Diary, 9/1-30/43' (NAID 78180649), RG 38 WWII War Diaries - 'Ships present' rosters, Adak, Aleutian Islands, 22-27 September 1943; corroborated by 'USS SC-539 - War Diary, 11/1-30/43' (NAID 78369885) [other_primary]
- Locator
- NAID 78180649 objects 31-37 (dated pages 22-27 Sep 1943); NAID 78369885 objects 16-17 (Nov 1943)
- Finding type
- historical_record
- Finding
- Aleutian assignment documented in primary records: USS Richmond (CL-9) war diary lists SC-670 among 'Ships present' at Adak on 22, 23, 24, 25, 26, and 27 September 1943 - variously moored at Kuluk Bay and Sweepers Cove alongside SC-1033, SC-1025, SC-538, YMS and PC craft. USS SC-539's November 1943 diary places SC-670 at Scabbard Bay, Adak: 'moored... in company with SC 670 and SC 1034, Scabbard Bay, Adak, Alaska' and 'in company with SC 670... proceeding to Scabbard Bay.'
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- September-November 1943
- Population
- SC-670 crew
- Limitations
- Presence rosters and anchorage company lists establish the hull's station (Adak, Aleutians, fall 1943) but not her daily tasking; SC harbor/patrol work at Adak is implied by station, not detailed. The transit from the Atlantic (post-April 1943) to Alaska is undocumented in this record (see gaps). SC-539 diary objects 16-17 (mid-November 1943) - exact dates within the month not pinpointed. No asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-sc-670-07
-
[9]NARA file unit 'USS CARIBOU - War Diary, 2/1-29/44' (NAID 78356923), RG 38 WWII War Diaries - USS Caribou (IX-114) at Kwajalein Atoll, entries 22-25 February 1944 [other_primary]
- Locator
- NAID 78356923, digital object 4 of 5 (entries 22-25 Feb 1944)
- Finding type
- historical_record
- Finding
- SC-670 was at Kwajalein Atoll, Marshall Islands within three weeks of its capture (Operation Flintlock, February 1944): 'February 22, 1944: Anchored. ...1760 SC 670 alongside to port and received 450 gallons of fresh water. February 25, 1944: Anchored. 1000 SC 670 away from port side.' She remained alongside the auxiliary for three days in the newly occupied anchorage.
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- February 1944
- Population
- SC-670 crew; USS Caribou crew alongside
- Limitations
- Establishes presence and a logistics evolution (fresh water) at Kwajalein, 22-25 February 1944 - not her route or tasking between Adak (Nov 1943) and Kwajalein (Feb 1944). No asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-sc-670-08
-
[10]NARA file units 'USS VESTAL - War Diary, 3/1-31/44' (NAID 78380374, entries 15-16 March) and 'USS VESTAL - War Diary, 4/1-30/44' (NAID 78428990, entries 17-18, 26-27 April), RG 38 WWII War Diaries - repair ship Vestal (AR-4), Majuro Anchorage [other_primary]
- Locator
- NAID 78380374 objects 14-16 (15-16 Mar 1944); NAID 78428990 objects 16, 20-21 (17-18, 26-27 Apr 1944)
- Finding type
- historical_record
- Finding
- Major machinery repairs to this hull documented verbatim by the repair ship: 15-16 March 1944 - 'Inspecting underwater work, U.S.S. SC-670'; 'Removing broken shaft and propeller while in drydock, U.S.S. SC-670'; 'Completed removing broken shaft and propeller while in drydock, U.S.S. SC-670.' 17-18 April - 'Working on main shafts, propellers and main engines in drydock, U.S.S. SC-670 and U.S.S. SC-999'; 26 April - 'Renewing shafting checking alignment, U.S.S. SC-670'; 27 April - 'Completed renewal of shafting checking alignment' and 'Completed work on main shafts, propellers and main engines while in drydock, U.S.S. SC-670 and U.S.S. SC-999.' A broken shaft and propeller were removed and the shafting, propellers and main engines were worked on for roughly six weeks, SC-670 and SC-999 in drydock together.
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- March-April 1944
- Population
- SC-670 crew; USS Vestal (AR-4) repair crews working SC-670 machinery
- Limitations
- Documents drydock machinery repairs (shaft, propeller, main engines) at a forward-area repair ship March-April 1944 - the most intensive maintenance event found for this hull. Cause of the broken shaft is not stated. Maintenance/disturbance context only: the diary records the work items, not materials handled - no asbestos or insulation content appears anywhere in these entries.
- Atlas source
- true
- Evidence ID
- ev-uss-sc-670-09
-
[11]NARA file units 'USS LUZON - War Diary, 5/1-31/44' (NAID 78448768) and 'USS LUZON - War Diary, 6/1-30/44' (NAID 78502171), RG 38 WWII War Diaries - internal combustion engine repair ship Luzon (ARG-2), Berth K-14, Kwajalein Anchorage [other_primary]
- Locator
- NAID 78448768 page -1- (entries 3, 6, 19, 21 May 1944); NAID 78502171 page -1- (entries 1, 4 Jun 1944)
- Finding type
- historical_record
- Finding
- Three tender repair availabilities on this hull at Kwajalein: '3 May 1944: SC 670 moored alongside for repairs'; '6 May 1944: YMS 299 and SC 670 repairs completed'; '19 May 1944: SC 670 moored alongside for repairs'; '21 May 1944: LCI-458 and SC-670 repairs completed'; and on 1 June 1944 SC-670 was again 'moored alongside for repairs and other tender services' with 'SC-670 repairs completed' by 4 June. Luzon operated as tender for internal combustion engine craft under ComServRon 10 representative, Navy 824, Fifth Fleet.
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- May-June 1944
- Population
- SC-670 crew; USS Luzon (ARG-2) repair crews
- Limitations
- Documents three repair availabilities May-June 1944 following the March-April drydock work - recurring maintenance consistent with hard service on a 20-month-old wooden hull. Work items not itemized; no material or asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-sc-670-10
-
[12]NARA file unit 'USS MOLALA - War Diary, 6/1-30/44 (Action Report, p 10)' (NAID 78516667), RG 38 WWII War Diaries - fleet tug Molala (ATF-106), entries 4-9 June 1944 [other_primary]
- Locator
- NAID 78516667 objects 1-2 of 12 (entries 4-9 Jun 1944)
- Finding type
- historical_record
- Finding
- SC-670 performing her designed anti-submarine role verbatim: 4 June 1944 Molala sailed Kwajalein for Eniwetok with anti-torpedo net, YC-1039, and YF-691 in tow; '1715 SC-670 took station ahead for anti-submarine screen.' For 5-9 June the diary repeats 'Enroute from Kwajalein Atoll to Eniwetok Atoll, Marshall Islands with SC-670 as anti-submarine screen' - a five-day ocean escort of a slow (2.5-3.3 knots good) vulnerable tow. Molala entered Eniwetok's Wide Pass 9 June; SC-670's employment thereafter continued at Eniwetok.
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- June 1944
- Population
- SC-670 crew (at-sea anti-submarine screening)
- Limitations
- Documents a single named escort assignment - representative of her routine role but not a complete employment record. No asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-sc-670-11
-
[13]DANFS, Zeus I (ARB-4) - battle-damage repair ship at Eniwetok Atoll, July 1944 [nhhc_danfs]
- Locator
- Zeus (ARB-4) DANFS entry, paragraph covering 15-31 July 1944 at Eniwetok
- Finding type
- historical_record
- Finding
- Official NHHC DANFS history of the repair ship names this hull at Eniwetok in July 1944: after arriving 8 July and beginning work 15 July, '[f]or the remainder of the month, the ship carried out work on a variety of vessels ranging from two submarine chasers (SC-775 and SC-670) to three pontoon barges and a pair of target rafts.' SC-670 received repair work from USS Zeus at Eniwetok in the second half of July 1944.
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- July 1944
- Population
- SC-670 crew; USS Zeus (ARB-4) repair crews
- Limitations
- DANFS names the hull but not the work items performed. Third documented repair event in three months (Majuro Mar-Apr; Kwajalein May-Jun; Eniwetok Jul) - recurring maintenance on a wooden hull in forward service; no material or asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-sc-670-12
-
[14]NARA file unit 'COMSERRON 10 - War Diaries, 9/1-30/44' (NAID 78654065), RG 38 WWII War Diaries - Commander Service Squadron Ten, Eniwetok, entries 12-14 September 1944 [other_primary]
- Locator
- NAID 78654065 objects 7-9 of 39 (entries 12-14 Sep 1944)
- Finding type
- historical_record
- Finding
- At Eniwetok in September 1944 the internal combustion engine repair ship USS Oahu (ARG-6) 'continued alongside repairs to U.S.S. SC 759, U.S.S. YMS 292, U.S.S. YMS 395, U.S.S. CAPTIVATE, ATR 81, U.S.S. PC 1125, U.S.S. PCS 1452, U.S.S. SC 670 (sound and overhaul assistance)' - an alongside availability including work on her sound (sonar) gear and overhaul assistance, recorded daily 12-14 September 1944.
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- September 1944
- Population
- SC-670 crew; USS Oahu (ARG-6) repair crews
- Limitations
- Fourth documented repair availability of 1944. Work categories named ('sound and overhaul assistance') but itemized work packages are not in the diary. No material or asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-sc-670-13
-
[15]NARA file unit 'USS SC-1003 - War Diary, 1/1-31/45' (NAID 139853292), RG 38 WWII War Diaries - sister SC-497-class boat, Eniwetok Atoll, entries 5 and 14 January 1945 [other_primary]
- Locator
- NAID 139853292 object 1 of 3 (entries 5 and 14 Jan 1945)
- Finding type
- historical_record
- Finding
- SC-670 on harbor-entrance patrol at Eniwetok in January 1945: sister boat SC-1003 'Relieved SC-670 of patrol Station Able at 0750, off Eniwetok Atoll, Marshall Islands, Deep Entrance Channel' on 5 January 1945, and again 'Relieved SC-670 of patrol Station Able at 0831' on 14 January 1945.
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- January 1945
- Population
- SC-670 crew (harbor entrance patrol)
- Limitations
- Documents her patrol-station duty at Eniwetok into mid-January 1945 - the last forward-area record before her Pearl Harbor rotation (see CTF-16 row). No asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-sc-670-14
-
[16]NARA file unit 'COMSERFORP AC - War Diary, 4/2-29/45' (NAID 633438085), RG 38 WWII War Diaries - Commander Service Force Pacific, Task Force 16, composition and unit movements April 1945 [other_primary]
- Locator
- NAID 633438085 objects 3-4 and 11 of 11 (composition list; T.U. 16.10.9 entry 2 Apr; detachment entries late Apr 1945)
- Finding type
- historical_record
- Finding
- SC-670 appears in the Task Force 16 composition list as of 1 April 1945, and the 2 April entry records her redeployment: 'T.U. 16.10.9 - U.S.S. SC 999 U.S.S. SC 670 CTU LT. J.E. Miller, USNR, in SC 999 - departed Pearl Harbor for Eniwetok escorting convoy PD 358. Stopped off at Kwajalein for logistics 22 April. Departed Kwajalein 23 April for Eniwetok. Arrived Eniwetok 26 April where detached from TF 16, reporting to CTF 96 for onward routing to CTF 94... On arrival SC 999 reported to CTF 94 for temporary duty, SC 670 reporting for duty as relief for an SC type vessel returned to Pearl.' She and SC-999 (the same pair drydocked together April 1944) escorted a convoy from Pearl Harbor back to the forward area, SC-670 sent out as a relief replacement for a sister boat rotated home.
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- April 1945
- Population
- SC-670 crew (convoy escort Pearl Harbor - Eniwetok)
- Limitations
- Establishes the Pearl-Eniwetok relief rotation and convoy escort employment, April 1945. Implies she had been at Pearl Harbor between mid-January (last Eniwetok patrol) and 2 April - presumably her own overhaul/refit, though the work record is not located (see gaps). No asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-sc-670-15
-
[17]NARA file units 'USS LST-789 - War Diary, 7/1-31/45' (NAID 101766915) and 'COM LST GR 40 - War Diary, 7/1-31/45' (NAID 83534017), RG 38 WWII War Diaries - Task Group 90.13 en route Noumea to Guam, entry 1 July 1945 [other_primary]
- Locator
- NAID 101766915 object 1 of 3 (entry 1 Jul 1945); NAID 83534017 object 1 of 3 (same event)
- Finding type
- historical_record
- Finding
- SC-670 still operating independently at sea six weeks before the war's end: on 1 July 1945 near 11 deg N, 161 deg E the LST group 'sighted' USS SC-670, which 'on request, was granted permission to come alongside to refuel. 1645 Completed refueling SC 670 having transferred 500 gal. of fuel oil. SC 670 departed for Eniwetok' - the group diary adds that SC-1369 continued on opposite course.
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- July 1945
- Population
- SC-670 crew
- Limitations
- Confirms operational steaming east of Eniwetok in July 1945; what she had been doing to windward is not stated. No asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-sc-670-16
-
[18]U.S. Coast Guard Historian's Office, 'Air Class Cutters' webcutters page (archived capture 2017-04-30; live URL defunct) - AIR GREBE listed among Air-class cutters [other_primary]
- Locator
- AirClass.asp, 'Air Class Cutters' program paragraph and 'LIST OF "AIR CLASS" CUTTERS' - AIR GREBE entry
- Finding type
- vessel_history
- Finding
- Official USCG documentation of the air-sea-rescue program this hull joined: 'The Air Class cutters were 70 Navy SC 497-class patrol boats the Coast Guard requested to be permanently transferred from the Navy to the Coast Guard for air-sea-rescue duties. Initially, 36 were provided on a loan basis. However, due to a shortage of CG personnel immediately following World War II, few 110-foot SCs became operational and those that did saw little service. Those units placed "in commission in reserve" status were assigned one deck petty officer and one engine-room rate as caretakers.' AIR GREBE appears in the page's list of transferred cutters.
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1946-1948
- Population
- Coast Guard crews/caretakers assigned to Air-class cutters
- Limitations
- ARCHIVED COPY - the live uscg.mil webcutters tree is defunct; cited via Wayback capture 2017-04-30 per citation policy. The page is program-level; it names AIR GREBE in the roster but gives no individual dates, station, or decommissioning detail for her (see gaps). Generic specs shown on the page (111'6", 135 t., 16-person crew) are class-generic CG configuration, not this hull's Navy fit. No asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-sc-670-17
-
[19]J. Flynn, 'U.S. Coast Guard "W" Numbers' (U.S. Coast Guard Historian's Office, 2014), index table - 'WAVR 426 Air Grebe ex. SC-670' [other_primary]
- Locator
- Index table, 'WAVR 426' row
- Finding type
- vessel_history
- Finding
- The Coast Guard Historian's official W-number register maps this hull's Coast Guard identity: WAVR 426 'Air Grebe', ex. SC-670 - confirming the 19 March 1946 Navy-to-Coast-Guard transfer documented in the DANFS roster. Neighboring entries document the program pattern (WAVR 411-428 all ex-SC boats).
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1946-1948
- Population
- Coast Guard crews/caretakers
- Limitations
- Index-table mapping only - this scrape captured the document's front index section (the per-cutter detail roster did not render); individual Air Grebe service dates beyond the NavSource/Flynn-derived timeline are not in the captured portion. No asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-sc-670-18
-
[20]International Maritime Library vessel record 'AIR GREBE, WAVR-426 > SC-670 > GREBE' - merchant registry data transcribed from documentation records [other_primary]
- Locator
- IML record 'AIR GREBE, WAVR-426 > SC-670 > GREBE'
- Finding type
- historical_record
- Finding
- Post-sale merchant identity documented: official number 255474, call letters WB5702, oil screw, 121 gross / 72 net tons, wood hull, built Duluth (listed under 'MI' = Michigan state field per their taxonomy), fishing service 1960 with owner Wm. M. Everitt, homeport Seattle WA - matching NavSource's merchant chain (Nelson 1948, Roth 1949, Everitt 1951, later Cordova owners).
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1948-2000
- Population
- Civilian fishing crews (1948-2000)
- Limitations
- Library transcription of U.S. vessel documentation registers - corroborates the merchant career and supplies the official number, but is secondary; the underlying enrollment/licensing files at NARA/CG were not pulled. No asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-sc-670-19
-
[21]Era inference built on: NavSource specifications for this hull (two GM EMD 16-184A diesels, wooden 110' hull); USCG Air-class page specifications (2 x GM 16-184A diesels, wood construction); GAO HRD-80-2 era documentation that the Navy used asbestos insulation aboard ships into the early 1970s [other_primary]
- Locator
- Composite of the cited design/specification sources; no single document lists SC-497-class insulation materials
- Finding type
- asbestos_application
- Finding
- Era-consistent asbestos applications aboard a 1942 wooden diesel patrol craft: no boilers or steam plant exists aboard this type, so the asbestos-relevant system set is narrower than on steam vessels - candidate applications are diesel exhaust lagging, engine gaskets and flange packing, electrical switchboard and wiring insulation, and fireproof panels around the galley and engine spaces. Period practice across the fleet used asbestos in such applications.
- Verification
- inferred
- Role
- supporting
- Documentation level
- class_or_era
- Accessed
- 2026-10-03
- Study period
- 1942-1948
- Population
- SC-670 crew (28 complement); repair-ship crews who worked her machinery spaces
- Limitations
- Class/era inference only - no hull-specific insulation survey, material list, work package, or abatement record located for SC-670. Names era-standard applications, not confirmed installed materials; no quantity. The documented repair availabilities (shaft, propeller, main-engine work) are maintenance-disturbance context only - the records name the work items, not the materials. Does not establish exposure or eligibility for any person.
- Atlas source
- true
- Evidence ID
- ev-uss-sc-670-20
-
[22]GAO, 'Navy Efforts To Protect Workers From Asbestos Exposure', HRD-80-2 (October 18, 1979) [gao]
- Locator
- GAO product page, report summary
- 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 construction (1941-42) and service era (1942-48).
- Verification
- verified
- Role
- context
- Documentation level
- class_or_era
- Accessed
- 2026-10-03
- Study period
- 1940s-1970s
- Population
- Navy shipboard personnel (program-level)
- Limitations
- Program-level documentation; supports era context only, not any fact specific to this hull or to wooden small craft. Full text not retrieved this session (media.defense.gov Akamai blocked direct fetch; product-page description used - confirmed 2026-10-03).
- Atlas source
- true
- Evidence ID
- ev-uss-sc-670-21
-
[23]Secondary shipbuilding tables (shipbuildinghistory 'Sub Chasers Built During WWII'; navalmarinearchive 'Inland Waterways' yard list) vs. Flynn USCG W-number register and NavSource [other_primary]
- Locator
- Shipbuilding History SC table, SC-670 row; navalmarinearchive Inland Waterways yard table; Flynn index WAVR 425/426 rows
- Finding type
- historical_record
- Finding
- CORRECTION: secondary shipbuilding tables misattribute this hull's Coast Guard identity - both carry 'SC-670 ... to USCG 1945 as Air Grayleg (WAVR-425)'. The official USCG W-number register (Flynn) assigns WAVR-426 'Air Grebe' to ex-SC-670, and WAVR-425 'Air Graylag' to ex-SC-665; NavSource agrees (USCGC Air Grebe WAVR 426 ex-USS SC-670). The '1945' transfer year in the tables is also loose - the documented transfer is 19 March 1946.
- Verification
- verified
- Role
- correction
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 1946-1948
- Limitations
- Corrects a circulating secondary-source misattribution, not a material/exposure claim. Also flagged: Inland Waterways table delivery-date field shows '2-Aug-42' where DANFS/NavSource show commissioning 2-Sep-42 - likely a transcription slip.
- Atlas source
- true
- Evidence ID
- ev-uss-sc-670-22
-
[24]Batch-8044 search ledger (this record): NHHC DANFS roster and Zeus; NARA catalog 'SC-670' full-text (muster rolls + 11 war-diary file units pinpointed); NavSource; USCG Air-class (Wayback); Flynn W-numbers; HyperWar Ships-of-USN index; International Maritime Library; uboat.net; CourtListener opinion/docket queries; asbestos-keyword web searches [other_primary]
- Locator
- search_ledger rows sl-uss-sc-670-01 through sl-uss-sc-670-20
- Finding type
- historical_record
- Finding
- No qualifying ship-specific asbestos record located: no asbestos survey, abatement contract, hazmat disclosure, material list, or docketed case naming SC-670 / PC-670 / Air Grebe / Grebe (ON 255474) was found in the public sources searched (see search_ledger). The unusually complete NARA repair record for this hull (six documented availabilities 1944-45) names the work items but never the materials.
- Verification
- verified
- Role
- negative_finding
- Documentation level
- ship_specific
- Accessed
- 2026-10-03
- Study period
- 2026-10-03
- Limitations
- Absence of a located public record does not prove absence of asbestos aboard - era inference only. CourtListener queries were attempted this session but throttled by the fleet pacing limit (see ledger); litigation status is an open gap, not a verified negative. Deck logs, overhaul work packages (Pearl Harbor rotation, early 1945), and any Coast Guard in-commission-in-reserve reports were not pulled.
- Atlas source
- true
- Evidence ID
- ev-uss-sc-670-23