📏 Distance, Speed, & Time Calculator
Essential navigation tools for voyage planning and passage monitoring. Calculate arrival times, convert units, and monitor vessel performance with precision mapping and standard shipping formulas.
Parameters
Ready to Calculate
Enter the required values on the left and click calculate to see the results.
🖇️ Passage Planning Tools
Segmental Passage (Multiple Legs)
Fuel Consumption Reference
* Fuel estimate uses the law of cubes (Consumption ∝ Speed³). Results are indicative for voyage planning only.
📏 Distance Conversion
Quick Select (Nautical Miles)
🚀 Speed Conversion
Quick Select (Knots)
Accuracy monitored to 4 decimal places.
Always verify with manual navigation logs.
How to Use
📌 When to Use
- •Voyage drafting and passage planning (SOLAS Ch V compliance).
- •Calculating Estimated Time of Arrival (ETA) for port agents and pilots.
- •Cross-checking bridge equipment (GPS/Log) manual calculations.
- •Post-voyage fuel performance analysis.
🔧 Operation Guide
- 1.Select what you want to calculate (Distance, Speed, or Time).
- 2.Enter the two known values in the input fields.
- 3.Optional: Toggle ETA mode to input departure time and get arrival estimates.
- 4.Optional: Use 'Add Leg' to build a complex passage and calculate average speed.
- 5.Review the results, including time formats and fuel estimates.
Important Note
Arrival times may vary significantly due to weather, currents (set and drift), and traffic density. Always factor in safety margins.
💡 Example Calculation
Calculate ETA for a 450 nm passage at 14.5 knots
- → Distance: 450 nm
- → Speed: 14.5 knots
- → Departure: Today at 08:00
- → Result: ~31 hours (1 day 7 hours)
- → ETA: Tomorrow at 15:00
🔗 Related Maritime Tools
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Reference to passage planning requirements (SOLAS Ch V, Regulation 34). This tool assists in fulfilling the appraisal and planning phases of voyage preparation.