USER GUIDE
Where the information comes from
Before using a result, check its provider, datum, time basis, confidence and installed-data details.
How to interpret it safely
Before using a result, check its provider, datum, time basis, confidence and installed-data details.
The user guide explains what the information means, how the result is produced and which warnings or limits matter.
See the main screens
What to know before you use it
How to use this feature well
Check the provider, edition or revision, licence and installed data shown with each reference. The app summary never replaces the current official publication.
Where the information comes from
Where the information comes from: Before using a result, check its provider, datum, time basis, confidence and installed-data details.
Check your inputs
Where the information comes from: Complete missing information and correct inconsistent or out-of-range vessel, position and calculation values.
Understand the calculation
Where the information comes from: Keep the units, vessel particulars, time zone and selected method in view when reading a result or export.
When to stop and review
Where the information comes from: Read each warning, correct its cause and recalculate before continuing.
Use it within its limits
Where the information comes from: CaptainCalc supports decisions; approved vessel documents, official publications and the master's judgement remain authoritative.
Continue learning
CaptainCalc is decision support. It never replaces approved stability data, loading computers, ECDIS, official publications, procedures or professional judgment.
Get CaptainCalc on Google Play
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