Ship Universe Maritime Tool
Ship Voyage Time & ETA Calculator
Calculate voyage duration, effective speed and ETA from nautical-mile distance, vessel speed, weather or current loss, operational delays and time-zone offsets. Advanced mode builds the voyage leg by leg and adds schedule-buffer analysis, required speed to meet a target arrival and ETA sensitivity.
1 knot = 1 nautical mile per hour
Voyage Duration
Distance ÷ effective speed plus entered delays
Local + UTC ETA
Convert departure and arrival with user-entered UTC offsets
Schedule Control
Check buffer and speed required to meet a target arrival
Route & Vessel Speed
Enter the route distance and planned average vessel speed.
nautical miles
knots
%
hours
Pilotage, canal, anchorage, traffic or other fixed delay.
Departure & Arrival
UTC hours
Example: New York EDT = -4, Singapore = +8.
UTC hours
Voyage Legs
Each leg can use a different distance, planned speed, speed loss and fixed delay.
| Leg | Distance NM | Speed kt | Loss % | Delay hr |
|---|
Departure, Arrival & Target ETA
UTC hours
UTC hours
hours
Optional. Uses the arrival UTC offset above.
hours
knots
Voyage Time & ETA Results
Simple voyage duration estimate
Enter voyage data
Enter distance, vessel speed and departure time
to calculate voyage duration and ETA.
Planning estimate only.
Actual ETA can change with weather, currents, routing,
traffic, pilotage, canals, port congestion, machinery
limitations, security restrictions and operational
decisions. UTC offsets are fixed user inputs and do not
automatically account for daylight-saving changes.
Results copied