keep the screen where you stopped open and read the exact validation, source, permission, vessel-data or access message.

If a source, access, location permission or vessel detail is missing, CaptainCalc explains what is needed. Check the connection, permissions and data date, then try again without using an outdated value.
keep the screen where you stopped open and read the exact validation, source, permission, vessel-data or access message.




Never bypass a missing requirement or copy a partial value into an operational record. If it persists, record the non-sensitive error text and app version for support.
CaptainCalc is decision support. It never replaces approved stability data, loading computers, ECDIS, official publications, procedures or professional judgment.
Freemium keeps essential online tools available with ads. Premium removes ads, raises limits and unlocks the complete offline professional workspace.
