Evidence
7 evidence entries recorded; each entry has a stable permalink (#ev-1 … #ev-7).
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[1]research packet 1005-packet.md [other_primary]
- Finding type
- vessel_history
- Finding
- Identity packet verdict: VERIFIED
- Verification
- verified
- Role
- correction
- Documentation level
- ship_specific
- Evidence ID
- uss-bentang-waitatiri-pgm56-pkt-1005-packet-md
-
[2]NavSource Online, PGM-56 (Motor Gunboat/Patrol Gunboat Photo Archive) - vessel timeline and specifications page [other_primary]
- Locator
- PGM-56 page, timeline bullets and Specifications block
- Finding type
- vessel_history
- Finding
- PGM-56 was laid down in 1961 by Marinette Marine Corp., Marinette, WI; delivered 10 November (NavSource states 1962) and transferred to Indonesia under the Military Assistance Program, named KRI Bentang Waitatiri (P 571); transferred to the Philippines in 1965, renamed BRP Yanga (G 59), reclassified PG-59; struck from the Naval Register in 1982; fate unknown. No DANFS history exists for this hull. Specifications per the ship page: 110 t, 95 ft, eight 255-bhp General Motors 6-71 diesels on two shafts.
- Verification
- partial
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- 1961-1982
- Population
- Indonesian Navy crew (if delivered - disputed); Philippine Navy crew 1965-1982
- Limitations
- NavSource is a curated secondary archive, not a primary document; its stated delivery year (1962) conflicts with shipbuildinghistory's completion date (10-Nov-1961) and secondary compilations - carried in gaps. NavSource explicitly notes it is questionable whether the boat was ever delivered to Indonesia. Contains no asbestos information whatsoever; identity/history context only.
- Atlas source
- true
- Evidence ID
- ev-uss-bentang-waitatiri-pgm56-01
-
[3]Shipbuilding History (T. Colton), Marinette Marine yard construction table + postwar gunboats table (pg3) [other_primary]
- Locator
- Marinette yard table, FY57 PGM contract block; shipbuildinghistory.com/smallships/pg3.htm PGM 55-57 rows
- Finding type
- vessel_history
- Finding
- Shipyard table lists PGM 56 'Bentang Waitatiri', original owner Indonesian Navy, a 110-ton/95-ft motor gunboat completed 10-Nov-1961 at Marinette Marine, Marinette WI, disposition 'P 571, to Philippines 1965 as Yanga (G 58)' (yard page); the companion gunboats table gives 118 LDT/100 LOA, built 10-Nov-1961, 'P-571, struck 1982'. PGM-56 was one of the FY57-contract PGM-39-class boats built at Marinette for MAP/FMS transfer.
- Verification
- partial
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- 1959-1962 (construction/transfer)
- Population
- Marinette Marine construction workforce (1961); crews of recipient navies
- Limitations
- Secondary yard-history compilation, not a contract document; internal discrepancies: Philippine pendant listed as G 58 here vs G 59/PG-59 in NavSource and Philippine fleet lists, and dimensions/tonnage differ between this site's own tables (110 t/95 ft vs 118 t/100 ft). Completion date 10-Nov-1961 agrees with jounin.jp and Philippine-fleet secondary lists but conflicts with NavSource's 1962 delivery year. No asbestos content.
- Atlas source
- true
- Evidence ID
- ev-uss-bentang-waitatiri-pgm56-02
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[4]Indomiliter (Indonesian defense publication), 'Motor Gunboat (PGM-39 Class): Misteri Keberadaan dan Identitas Kapal Patroli TNI AL Era 60-an', 13 June 2018 [reputable_press]
- Locator
- Article body, paragraphs on KRI Bentang Waitatiri 571 and class-wide delivery question
- Finding type
- historical_record
- Finding
- An Indonesian defense-history investigation found that the three Bentang-class PGM-39 boats nominally assigned to TNI-AL (Bentang Silungkang 572, Bentang Waitatiri 571, Bentang Kalukuang 570) have 'names but no traceable hulls' in available records - no evidence the boats were ever operated by the Indonesian Navy could be located, and all three appear next as Philippine Navy units (Yachi G-57, Yanga G-59, Yundi G-60) in 1965. The article draws a parallel to the Type 206 submarine episode, where KRI labels were applied to hulls never actually operated by TNI-AL.
- Verification
- verified
- Role
- context
- Documentation level
- ship_specific
- Accessed
- 2026-10-04
- Study period
- 1961-1982 (investigation published 2018)
- Population
- TNI-AL crews (potential, unconfirmed); Philippine Navy crews 1965-1982
- Limitations
- Specialist defense press, not a primary or archival source; the argument is negative-evidence (no Indonesian service record found), consistent with NavSource's own 'questionable if ever delivered' flag. Whether the hull physically reached Indonesia - even briefly, e.g., for handover - remains unproven in either direction. Indonesian-language sources describe the boats as 'misterius' (mysterious).
- Atlas source
- true
- Evidence ID
- ev-uss-bentang-waitatiri-pgm56-03
-
[5]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 - spanning this hull's construction (1961) and entire service era (1961-82, including Philippine service on a U.S.-built hull).
- 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 blocks automated fetch, HTTP 403, confirmed 2026-09-18 in batch-98) - content via product-page description.
- Atlas source
- true
- Evidence ID
- ev-uss-bentang-waitatiri-pgm56-04
-
[6]Class/era inference anchored to NavSource PGM-56 specifications (all-diesel plant) + GAO HRD-80-2 era documentation [other_primary]
- Locator
- NavSource PGM-56 Specifications block; GAO HRD-80-2 product page
- Finding type
- asbestos_application
- Finding
- Era-consistent inference for a 1961 U.S.-built diesel motor gunboat: asbestos would be expected in machinery and exhaust thermal insulation/lagging, flange and valve gaskets, machinery packing, electrical insulation, and interior finish materials such as deck tile. The hull has no steam plant - eight GM 6-71 diesels on two shafts per NavSource - so the asbestos-relevant footprint is materially smaller than on steam vessels of the era.
- Verification
- inferred
- Role
- supporting
- Documentation level
- class_or_era
- Accessed
- 2026-10-04
- Study period
- 1961-1982
- Population
- Construction trades (Marinette, 1961); engine-room crews of operating navies
- Limitations
- Class/era inference, not a hull record - no PGM-39-class design manual, build specification, or hull survey was located. Does not establish that asbestos was installed aboard this hull, its quantity, or present-day presence. Propulsion fit itself is conflicted across sources (eight GM 6-71 per NavSource ship page vs two Mercedes-Benz 12V493 diesels in class-level references) - the inference holds under either fit since both are all-diesel.
- Atlas source
- true
- Evidence ID
- ev-uss-bentang-waitatiri-pgm56-05
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[7]Batch-8625 search ledger (this record): NavSource ship page; shipbuildinghistory yard/gunboat tables; NHHC/DANFS (no entry exists); NVR (not covered - pre-1987 disposal); indomiliter investigation; secondary transfer-list cross-checks; CourtListener (paced - see ledger); secondary web litigation sweep [other_primary]
- Locator
- search_ledger rows sl-uss-bentang-waitatiri-pgm56-01 through -08
- Finding type
- historical_record
- Finding
- No qualifying ship-specific asbestos record located: no asbestos survey, abatement contract, hazmat disclosure, or verified litigation naming PGM-56, KRI Bentang Waitatiri, or BRP/RPS Yanga was found in the public sources searched (see search_ledger). CourtListener base queries (exact-name and hull-number, opinion and docket) were attempted this session but returned the fleet pacing signal; the litigation row records the attempt status, not a negative result. Secondary web sweeps surfaced no qualifying case; the only 'asbestos aboard' material is law-firm marketing content asserting asbestos without primary sourcing - excluded by source policy.
- 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 - a 1961 U.S.-built hull is squarely inside the documented era of Navy asbestos use. The litigation-repository search status is per the search ledger. U.S. build-contract files, MAP transfer records, Philippine Navy disposal records, and any scrapping documentation are undigitized leads. Does not establish or defeat any claim of exposure or legal eligibility.
- Atlas source
- true
- Evidence ID
- ev-uss-bentang-waitatiri-pgm56-06