Use this sailing calculation as a planning or educational cross-check for navigation, wind and current, rig loads, stability, anchoring, tides, visibility, performance, or recovery under explicitly stated conditions.

Burn rate (L/h)

Fuel consumption at cruising output.

ETA (h)

Hours until arrival at the destination.

Compute the liters of fuel burned by the time of arrival as the burn rate in liters per hour times the ETA in hours. The tool evaluates the supplied inputs together and returns the named outputs below; it does not infer omitted operating conditions or change the units shown.^[1]

Fuel used (L)

Fuel consumed by the estimated time of arrival.

• Actual conditions change with vessel design and loading, sea state, wind, current, tide datum, weather, chart accuracy, equipment, crew, regulations, and safety margins. Simplified formulas do not replace seamanship, approved stability data, or current navigation information.
• Use finite inputs in the displayed units and preserve more precision than the final presentation requires. Independently verify safety-critical, financial, compliance, or production decisions.

Cross-check official charts, tide and weather services, instrument data, vessel manuals, and collision regulations; maintain conservative margins and a safe alternative plan.

• Post-Tack Acceleration Time

  Estimate how long a boat needs to recover full speed after a tack from the speed deficit and the acceleration rate.

• Crew Drift Estimate

  Estimate how far an overboard crew member drifts as current speed times time in the water plus wind speed times time scaled by a one percent windage coefficient.

• Maneuver Time Loss

  Compute the total time and distance lost to a series of maneuvers from the maneuver count, seconds lost per maneuver, and boat speed.