USER GUIDE
Use it within its limits
CaptainCalc supports decisions; approved vessel documents, official publications and the master's judgement remain authoritative.
How to interpret it safely
CaptainCalc supports decisions; approved vessel documents, official publications and the master's judgement remain authoritative.
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
Identify what the app can calculate, what depends on connectivity or access, and what must still be verified with approved documents, equipment and professional judgement.
Where the information comes from
Use it within its limits: Before using a result, check its provider, datum, time basis, confidence and installed-data details.
Check your inputs
Use it within its limits: Complete missing information and correct inconsistent or out-of-range vessel, position and calculation values.
Understand the calculation
Use it within its limits: Keep the units, vessel particulars, time zone and selected method in view when reading a result or export.
When to stop and review
Use it within its limits: Read each warning, correct its cause and recalculate before continuing.
Use it within its limits
Use it within its limits: 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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