Naval Architecture

Naval architecture calculators for hull speed, displacement, stability, propeller sizing, freeboard, tonnage, and bilge pump sizing.

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Calculate required bilge pump capacity from hull volume, flooding risk, and ABYC guidelines.

Calculate maximum deck loading capacity from structural scantlings, plating thickness, and frame spacing.

Calculate vessel displacement from hull dimensions, draft, and block coefficient.

Calculate minimum freeboard from load line regulations and compare against actual freeboard.

Calculate theoretical hull speed from waterline length using the speed-length ratio formula.

Calculate optimal propeller diameter and pitch from engine power, hull speed, and shaft RPM.

Calculate minimum rudder area and dimensions from lateral plane area and desired percentage.

Calculate the righting arm (GZ) curve from hull geometry and loading to assess vessel stability.

Calculate fuel, water, and holding tank volumes and weights for marine applications.

Calculate gross tonnage and net tonnage from enclosed volume using the ITC 69 convention.