Skip to main content
The Metaweave form is a single self-contained HTML file (~13 MB) that the office sends to each vessel. It runs offline in Chrome or Edge, with everything embedded — jQuery, CryptoJS, all dropdown lists, all validation rules. No internet, no installs, no server.
Noon Report voyage section

Noon Report — voyage section.

​
The report tabs

The left sidebar lists every report type the form supports:

​
Layout

Every tab follows the same vertical layout:
  1. Vessel block (pre-populated by the office) — IMO, vessel name, vessel code
  2. Voyage block — voyage number, location (At Sea / In Port), date/time + GMT offset, lat/long, vessel condition, port, ETA/ETD, ice/STS/refuge flags, remarks
  3. Distance and Vessel — CP speed, observed distance, engine hours, RPM, KW, generators, ME parameters
  4. Weather — wind, sea, swell, visibility, air/sea temperature, pressure
  5. Events — at-sea or in-port event blocks with per-fuel consumption breakdown
  6. Bunker ROB — fuel remaining-on-board summary by fuel type
  7. Technical Parameters — torque, exhaust gas temperatures, scavenge pressure, air-cooler temps
  8. Scrubber — operating mode and breakdown periods
  9. FOWE System — Fuel Oil Water Emulsion availability and usage periods
  10. Slops & Fresh Water — slop ROBs (water/oil), bilge, sludge, lube oils, fresh water
  11. Master’s name — first/last name signature
  12. Submit — at the bottom of every tab
Bunker, SOF, and the supplementary report tabs use different field sets — see Filling reports for the per-tab walkthrough. The left sidebar is the only navigation. Clicking a tab swaps the main content area. There is no pagination — the entire report scrolls in one continuous form. A gear icon at the bottom of the sidebar opens the Settings modal: vessel identifiers, validation limits, and the link to history.json. See Setting up history.json for the office and vessel setup steps.

​
What you see vs. what’s stored

The form has many hidden inputs the user never touches: principal ID, client IDs, form identifier, ref ID, isBarge flag, client name. These travel with the encrypted payload and let the pipeline route the submission correctly. Auto-calculated fields are read-only — the form computes them from your inputs:
  • Slip % = (observed distance − engine distance) / observed distance × 100
  • Reported Speed = observed distance / steaming hours
  • Average RPM = main engine revs / (main engine hours × 60)
  • Average KW = main engine KWhrs / main engine hours
  • Mean Draft = (fwd draft + aft draft) / 2
If a calculated value looks wrong, fix the inputs that feed it — you can’t overtype.

​
Browser requirements

  • Chrome 86+ or Edge 86+ — required for the local archive (File System Access API).
  • Firefox / Safari — the form opens and submits, but the archive feature is disabled because no other browser supports the FSA API.

​
File structure

The form is built from these embedded pieces (all inside the single HTML file):

​
See also