Bridge Calc: Draft & Ballast

Bridge Calculators is an offline tool designed for maritime professionals. It includes a set of calculators commonly used by deck officers, chief mates, and shipmasters for cargo handling, draft management, stability assessment, and onboard calculations.
Available modules:
- Draft Survey Calculator.
Manual and automatic calculation of loaded or discharged cargo based on draft readings and vessel data.
- Ballast Calculator
Calculates ballast water quantity in tanks (manual or automatic). Allows vessel, tank, and tank table setup. Provides fast results based on tank geometry and soundings.
- Stowage Plan Calculator
Automatic cargo distribution by holds using cargo stowage factor. Includes port entry/exit remarks for arrival and departure planning.
- Cargo Trimming Calculator
Final trimming calculator at the end of loading. Calculates cargo quantity required to reach even keel or target trim.
- Unit Converter
Converts various maritime units including stowage factor, volume, length, speed, and temperature.
- List Calculator
Calculates vessel heel (list) in degrees for navigational assessment.
- Humidity Calculator
Calculates relative humidity based on temperature and dew point.
- Squat & UKC Calculator
Assesses under keel clearance (UKC) and squat effect based on speed and draft.
- Draft & GM Change Calculator
Calculates changes in draft and metacentric height (GM) when transitioning between waters of different density.
Additional features:
- Offline operation – all calculators work without internet access.
- Google Drive backup for Draft Survey and Ballast Calculator, allowing secure data storage and recovery on another device.
- Light and dark themes for comfortable use in various working conditions.
- Clean and practical user interface optimized for onboard use.
The application is designed to assist with real-world vessel operations and enhance efficiency during cargo and stability-related tasks. Suitable for commercial vessels of all types