Purpose-Built
An offline small-vessel hydrostatics and loading workbench for displacement, trim, heel, free-surface effects, righting-arm curves, and load cases.
One-time iPhone and iPad app
Heeltrace
Trim, heel and hydrostatics
Core Features
- Editable vessel hydrostatic stations
- Load-case and tank ledger
- Corrected GM and heel estimate
- Trim and draft-change screening
- Righting-arm scenario plot
Private by Design
No account, subscription, ads, tracking, third-party analytics, or developer-operated backend. Core features work offline, and your work stays on device unless you deliberately share or export it.
Use It Responsibly
Educational and preliminary planning aid. Use approved stability information and a qualified naval architect for operation or certification.