Estimate Ferry Length Supplements from the Booked Vehicle Envelope
A rack or trailer can move a vehicle into another ferry length band. Model a stated per-started-metre supplement before comparing bookings, using the full envelope the operator asks for.
1 · vehicle option | total booked length metres | included length metres
FIRST-LOAD
Research prototype — checkout unavailable. Input is processed locally and a draft is saved automatically in this browser profile when storage is available. Reset to sample clears that draft; Pro history has its own clear button. A state link encodes your inputs in its URL: share only non-sensitive rows. Browser history, clipboard and anyone receiving the link may retain it. Optional AI use below leaves this device; it is not required.
Data note: Everything runs in this browser tab on the vehicle-length tariff stub: your vehicle option | total booked length metres | included length metres stays on this device, nothing is uploaded, and the reading is rebuilt only when you press run.
Perspective: Before: The booking envelope may exceed the manufacturer’s bare-vehicle dimension. After: the vehicle-length tariff stub shows the working beside each named row so the reader can change the assumption and inspect the consequence.
2 · Read the vehicle-length tariff stub
Hypothetical tariff arithmetic only, not a carrier quote or boarding guarantee. Verify measurement and safety requirements with the ferry operator.
Paid layer: vehicle-length tariff stub print and history
one-time step · the free reading above stays complete
Free tier
- one complete vehicle-length tariff stub run in the app
- three samples plus unlimited article-demo runs
- unwatermarked result text and an explicit, user-triggered state link
What $4 one-time adds
- print the vehicle-length tariff stub with its row workings
- CSV of supplement units and row explanations
- last five reading summaries saved in this browser profile
$4 once for repeated filing of the vehicle-length tariff stub, not for a better answer. Illustrative time basis: avoiding one five-minute manual reformat per saved reading; no market-price or guaranteed-savings claim.
Local history (this device)
- No saved runs yet — your first run files here.
Checkout is unavailable until a payment link is configured. The optional unlock is browser-local, profile-scoped and best-effort, not server-verified access. Clearing browser data can remove it; there is no account or cross-device recovery.
Boundary and sources
Hypothetical tariff arithmetic only, not a carrier quote or boarding guarantee. Verify measurement and safety requirements with the ferry operator.
- Method: Supplement = ceil(max(0, booked length − included length)) × charge. A 5.4 m vehicle above a 5 m allowance uses one started metre; 7.1 above 6 uses two.
- All sample records are invented examples. The app does not fetch measurements, policies, files or personal records.
- Google’s official pricing page, fetched 2026-09-29, lists free-tier access including AI Studio. Optional formatting only; limits and availability can change. Free-tier content may be used to improve products. Never paste private records there.
Mechanism: competence-autonomy-loop
Optional AI formatting, not calculation
For this vehicle-length tariff stub, use the free AI Studio interface only if available to you, with no paid API key. Manual entry completes the same workflow for free. Supply only fictional or non-sensitive notes. Review its output against the source; never paste unresolved questions into the numeric rows.
Format my non-sensitive notes for a vehicle-length tariff stub. Return plain rows only: vehicle option | total booked length metres | included length metres. Preserve supplied quantities exactly. Do not guess missing values; list questions separately. Do not calculate or add advice. I will check every row before pasting into the local tool.
Accepted schema: vehicle option | total booked length metres | included length metres. No AI response is executed as code.