Vessel observer coverage
Measurement answer
What this metric measures
Reports vessel observer coverage as counts and proportions, with human observers and remote electronic monitoring systems reported separately for the applicable vessel population.
Specification
Metric specification
- Result format
- Multi-field profile
- Unit
- number of vessels; % of applicable vessels — source-defined reporting unit
- Reporting basis
- Reporting period
- Aggregation
- For each observer-coverage system and vessel-population basis, report the number of covered vessels and the proportion of applicable vessels covered.
- Pillar
- Governance
- Topic
- Nature-related impact management and fisheries monitoring
- Controlled domain
- Nature, biodiversity and land
- Entity type
- Metric
Reporting boundary
Organization's vessels and, where applicable, source or supplier vessels; population basis must be reported separately.
Verified source occurrences
Framework coverage
This is one canonical metric. The bindings below show every verified framework occurrence without creating duplicate metric pages. Edition, disclosure, role, and relationship remain source-specific.
- Adopting DisclosureSource evidence
TNFD sector guidance
- Publisher
- Taskforce on Nature-related Financial Disclosures
- Edition
- Final English sector guidance collection through August 2026 (17 documents)
- Requirement
- Not Specified
- Relationship
- Defines Disclosure
- Mapping outcome
- Direct Evidence
- Source locator
- Additional sector guidance – Fishing v1.0 (June 2025), p.88, Table 17, F.A23.2
- Adopting DisclosureF.A23.2
TNFD sector guidance
- Publisher
- Taskforce on Nature-related Financial Disclosures
- Edition
- Version 1.0, June 2025
- Requirement
- Recommended
- Relationship
- Maps Source Identity
- Mapping outcome
- Published
- Source locator
- Additional sector guidance – Fishing v1.0 (June 2025), p.88, Table 17, F.A23.2
Value structure
Dimensions and units
- Unit
- number of vessels; % of applicable vessels — source-defined reporting unit
- Reporting basis
- Reporting period
Unit meaning: Values use number of vessels; % of applicable vessels under the disclosed TNFD sector-guidance method, reporting period and boundary.
Table fields and units
- vessel population basis
- observer coverage system
- applicable vessels
- vessels with observer coverage
- observer coverage proportion
Published dimensions
- observer coverage system: human observer or remote electronic monitoring (REM) system
- vessel population basis: organization's vessels or source/supplier vessels
- measure field: number of vessels or proportion of applicable vessels
- fishing value-chain applicability: fishing, fish trading, fish processing, or retail
Disclosure method
Formula information
- Status
- Not applicable
- Formula type
- Structured Disclosure
Disclosure form
No single formulaReport the source-defined result with its stated fields and method disclosures. F.A23.2 expressly identifies a count-and-proportion disclosure and requires separate reporting for human observers and REM systems. The observer system and vessel-population basis are material dimensions, so this is published as a structured metric rather than a single blended coverage percentage.
Verified sources
Evidence and status sources
Sustopedia checked each record-specific claim directly against primary publisher material. Labels distinguish current measurement authority from future compatibility and corroborative, legal, edition, or method status context. Corroborative evidence can support a stated limitation but cannot establish the core measurement by itself.
Measurement evidence
- Measurement evidenceChecked 30 August 2026
TNFD additional sector guidance collection
- Publisher
- Taskforce on Nature-related Financial Disclosures
- Edition
- Final English sector guidance collection through August 2026 (17 documents)
- Locator
- Additional sector guidance – Fishing v1.0 (June 2025), p.88, Table 17, F.A23.2
Supports: The official TNFD sector guidance supports the identity, boundary and method basis of “Vessel observer coverage”.
Open official source
Use with context
Interpretation boundaries
Method disclosures required
Source-edition basis: TNFD sector guidance, Final English sector guidance collection through August 2026 (17 documents).
- Report human-observer coverage separately from REM-system coverage.
- Define the applicable vessel population and disclose whether it comprises organization-owned vessels, source/supplier vessels, or separately reported populations.
- Disclose the basis on which a vessel is considered to have observer coverage, including any duration, trip, activity, or operational threshold.
- Provide the denominator used for each reported proportion.
Record-specific limitations
- The extracted evidence does not specify a minimum observation duration, voyage coverage threshold, observer protocol, or treatment of partial coverage.
- Organization-owned vessels and source/supplier vessels are alternative populations and must not be combined unless a common denominator and boundary are disclosed.
Interpret this metric with the stated reporting boundary, period convention, value shape, and unit. Results prepared with different boundaries or conventions may not be directly comparable.
Measurement evidence supports the core record-specific claims described above. Corroborative evidence can support limitations, while compatibility and status sources provide their separately labelled context. None of these cards by itself determines an organisation's legal applicability, filing readiness, assurance status, or compliance conclusion.