Welcome to Nautical Solver

Fast, practical tools for naval architecture & marine engineering.

Upcoming Calculators

Rolling out soon
Stability
GM (Initial Stability)
Coming soon

Compute KM, FSC, and GM with a visual breakdown and exportable report.

Stability
Trim
Coming soon

Longitudinal balance, MTC/LCF-based trim change and draft at ends.

Operations
Fuel Consumption
Coming soon

Daily and voyage fuel from SFOC curves, speed profile, and sea margin.

Propulsion
Speed–Power
Coming soon

Estimate delivered power vs. speed with sea states and margins.