What we read

Publicly published schedules only: carrier tariff pages and D&D schedules, stevedore terminal access and infrastructure charge notices, empty container park fee pages, and vehicle booking system fee schedules. We do not use leaked documents, customer contracts, crowdsourced reports, or estimates. If a value isn't in a published document, it isn't in Wharfa.

How we read it

Every watched source is checked daily. When a document changes, we store an immutable capture (the file itself, exactly as published, timestamped) and extract the values and rules into structured form: not just the dollar figure, but the tier structure, the day basis, when the clock starts, and how holidays are treated. Every value in our database points back to the capture it came from.

How it's verified

Automated extraction makes mistakes, so we say so. Values are published with one of two statuses: ✓ VERIFIED means a person has checked the value against the source capture; MACHINE-READ means it's awaiting that check. Any new source, unusual value, or large movement is held for human verification before it appears. The status is displayed everywhere the value is, and we will never hide it to make a page look tidier.

How changes are detected

New captures are compared against the current record. A confirmed difference produces a change event: the old value, the new value, the effective date as stated in the document, and the capture that evidences it. Changes appear in the public feed after 14 days; subscribers with a matching saved lane are notified the day of detection.

What the numbers represent

Published standard terms: the defaults that apply in the absence of negotiated arrangements. Your negotiated terms with a carrier, terminal, or park operator override anything published here. Wharfa reports what the schedule says; it cannot know what your contract says.

What Wharfa is not

Not commercial, financial, or legal advice. Not a guarantee that a publisher's schedule is itself correct, current, or lawfully applied. Not a substitute for the source document, which is why every value links to one. Where a number matters to a decision, read the capture.

Timing honesty

"Daily" means each source is checked at least once per day. A publisher can change a schedule minutes after our check; a document can be published in a form our pipeline can't yet read. When either happens, the gap between publication and detection is stated on the change record. We publish our own latency; judge us on it.