USS Isabel (SP-521)

Name
USS Isabel
Hull designation
SP-521
Vessel class
—
Evidence tier
Tier 2
Evidence entries
3
Record ID
uss-isabel-sp521
Dataset version
2026.10.12-rc.1
Canonical URL
https://asbestosatlas.org/ships/uss-isabel-sp521

Evidence

3 evidence entries recorded; each entry has a stable permalink (#ev-1 … #ev-3).

  1. [1]research packet 1017-packet.md (3 sources cited) [nhhc_danfs]
    Finding type
    vessel_history
    Finding
    Identity packet verdict: VERIFIED
    Verification
    verified
    Role
    supporting
    Documentation level
    ship_specific
    Evidence ID
    uss-isabel-sp521-pkt-1017-packet-md
  2. [2]Naval History and Heritage Command, Isabel (S. P. 521), search-result lead only; page inaccessible at verification time [nhhc_danfs]
    Locator
    Direct live check returned HTTP 404; attempted archived capture timestamp 2024-09-27 also returned 404
    Finding type
    historical_record
    Finding
    No ship-specific service-history finding is entered in this record. The NHHC DANFS page appeared in official-site search results, but its URL returned HTTP 404 during live verification; the retrieved Wayback capture also resolved to a 404 response. The NHHC photographic-history page likewise returned HTTP 404.
    Verification
    partial
    Role
    archival_lead
    Documentation level
    ship_specific
    Accessed
    2026-10-04
    Study period
    2026-10-04
    Limitations
    This row records an inaccessible source lead, not a service-history fact. Search-index excerpts are not used as evidence because the page could not be verified live and the available archived capture did not preserve the page. The target identity/designations in the record header come from the batch assignment, not this row.
    Atlas source
    true
    Evidence ID
    ev-uss-isabel-sp521-01
  3. [3]Batch-8707 search ledger; NHHC and NARA source access failures and incomplete CourtListener search documented there [other_primary]
    Locator
    Search ledger rows sl-uss-isabel-sp521-01 through sl-uss-isabel-sp521-05
    Finding type
    historical_record
    Finding
    No qualifying ship-specific asbestos survey, abatement record, hazmat disclosure, or asbestos-litigation finding was located in the accessible public sources checked for this batch. This is a limited search result, not evidence that asbestos was absent from the vessel.
    Verification
    partial
    Role
    negative_finding
    Documentation level
    ship_specific
    Accessed
    2026-10-04
    Study period
    2026-10-04
    Limitations
    Public-source searches were materially constrained: Firecrawl returned a keyless quota error with a 10,706-second retry estimate; the official NHHC pages checked returned 404; the NARA unit-list PDF returned 403; and CourtListener work stopped at the helper's fleet-pacing stand-down before the required four base queries were completed. Absence of located documentation does not establish absence of asbestos aboard, individual exposure, or legal eligibility.
    Atlas source
    true
    Evidence ID
    ev-uss-isabel-sp521-02

Attribution

Compiled by
Paul Danziger; Rod de Llano
Publisher
Danziger & De Llano, LLP
License
CC-BY-4.0
Citation
Danziger, P., and De Llano, R. (2026). AsbestosAtlas Navy Vessel Asbestos Exposure Dataset. Danziger & De Llano, LLP. DOI: not yet assigned
Dataset version
asbestosatlas-ships-2026.10.12-rc.1
DOI
not yet assigned