Source: https://guthlabs.ai/docs/instruments/tide-table-lookup-local-station/mechanism/

instrument mechanism / source-required

# Tide Table Lookup (local station) mechanism

The inspectable method record for Tide Table Lookup (local station), kept separate from implementation and qualification.

Status: **DISPOSED_UNVERIFIABLE_OFFLINE**Lifecycle: **source-required**

## Model scope

This live-data instrument has no offline formula model. Its mechanism is the approved source feed plus visible provenance.

## Units and conventions

Units and conventions must be supplied by the live source and displayed with freshness.

## Inspectable vector

No offline vector is asserted for this source-required instrument.

## Failure boundary

**BREAK_CLAIMED** · SELF_FLAGGED

The instrument cannot produce authoritative numeric tide predictions offline or without station-specific harmonic constants and live data. Boundary, extreme-date, calendar-transition, and time-zone cases also require explicit rejection or documented conventions; silently extrapolating, fabricating values, or choosing a time convention could create unsafe boating information.

## Other records

[01**Overview**](<https://guthlabs.ai/docs/instruments/tide-table-lookup-local-station/>)[03**Implementation**](<https://guthlabs.ai/docs/instruments/tide-table-lookup-local-station/implementation/>)[04**Qualification**](<https://guthlabs.ai/docs/instruments/tide-table-lookup-local-station/qualification/>)

## Sources and evidence

These pointers bind the page to evidence. They do not grant authority or collapse verification into deployment.

- `VERIFIED_LEDGER.json`

- `BOUNDARY_HAZARD_CATALOG.json`