Engine Calc: Fuel & Slip

Engine Calculators is a complete offline toolset for marine engineers and engine room staff.
It provides oil calculators, engine power estimations, slip calculations, and unit converters — everything needed for daily engine room operations.

Included Calculators:

- Oil Calculator
Manual & automatic calculation of oil quantities. Supports tank setup, tank tables, and geometry for fast and accurate results.

- Main Engine Power Calculator
Estimate engine power output based on entered parameters.

- Slip Calculator
Calculate propeller slip — the difference between theoretical and actual vessel speed.

- Unit Converter
Convert engineering and maritime units: stowage factor, volume, length, speed, temperature, and more.

Features:

1. Offline use – designed for engine rooms and sea operations.
2. Google Drive backup – secure recovery of Oil Calculator data.
3. Light & dark themes – adaptable to working conditions.
4. Focused UI – clear input/output for fast, practical use.

Designed For:

- Marine engineers monitoring fuel and oil on board.
- Engine room staff calculating slip and engine power.
- Professionals on tankers, bulk carriers, container ships, and offshore vessels.

Engine Calculators improves accuracy and efficiency in real-world shipboard operations, making daily engineering tasks easier and faster.