ETA Calculator is a simple offline navigation tool for seafarers.
It helps maritime professionals with voyage planning, passage scheduling, and time management at sea.

Main Functions

1. Estimated Time of Arrival (ETA):
Enter distance and vessel speed to calculate expected arrival time.

2. Required Speed:
Enter distance and desired arrival time to calculate the necessary speed.

3. History of Calculations:
All previous ETA and speed results are automatically saved for quick reference.

Useful For:

- Bridge watch officers
- Masters and chief officers
- Students and cadets in maritime training
- Anyone involved in time-critical passage planning

Features:

- Works fully offline, no internet required
- Fast, accurate results with a clear interface
- Light & dark themes for day and night use
- 24-hour time format, matching maritime standards

ETA Calculator is designed for all vessel types and sizes — from training simulators to real-world navigation. Reliable, accurate, and easy to use.