Edit vessel specs — engines, tanks, configuration

Change the vessel's underlying setup — engine count and model, generator config, tank sizes — after first-day setup.

First-day setup captures the basics. As you learn the boat (or change it), Vessel Edit lets you adjust engine specs, generator config, tank capacities, and overall vessel info. Existing logs and history don't change — only the boat's profile.

Steps

1. Open Vessel Edit

   Menu (☰) → Settings → Vessel Setup → Engines & Tanks (detailed) opens Engine Configuration and Tank Capacities. Vessel Identity does not reach them: its top row opens the vessel editor (name, homeport, dimensions, papers), and Propulsion's Edit opens the Main Engines survey screen, which saves as you go.

2. Engines

   Engine Configuration lists the engines on the vessel. Tap an engine to rename it; a newly added engine also takes an optional initial hour-meter reading. Use + and − to change the engine count, up to 12, and drag rows to set the port-first display order — then tap Save. Generators are edited separately, from the Edit link on the Generators section of Vessel Identity.

3. Tanks

   Tank Capacities lists fuel, water, and holding tanks. Edit gallons, add a new tank, or rename. Changes apply to future telemetry — past logs keep the value they were saved with.

4. Vessel info

   The vessel editor — tap the boat's name at the top of Vessel Identity — holds her name, homeport, length, beam, draft and air draft, her papers and navigation defaults. Hull number and year built are under Hull & Structure in Vessel Setup. There is no displacement field.

5. Air draft and papers

   Dimensions now carries Air draft — the height above the water, the number a bridge tender wants. Below it, a Papers section holds the USCG documentation number, state registration, MMSI, call sign, insurance carrier and policy number. All of it shows back on the vessel card.

Related

• Vessel card — hull number, air draft and papers at a glanceOpen the one screen that answers a dockmaster, a bridge tender or a boarding officer: hull number, air draft, MMSI, call sign, documentation number, and which papers are about to expire.
• First day — getting your vessel into theONEWalk through the boat survey and Vessel Setup so the app understands your boat.
• Log engine and generator hoursHow hour tracking works, where to type it, how it drives maintenance.
• Tank alerts — get pinged before you run dry or fill upSet thresholds on fuel, water, and holding tanks so theONE warns you before a problem becomes urgent.
• Vessel transfer — handing the boat to a new ownerExport the vessel's history, vendors, playbooks and documents into a file the next owner imports. Owner-only, one-way, and nothing on your side changes.

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