USER GUIDE
Check your inputs
Complete missing information and correct inconsistent or out-of-range vessel, position and calculation values.
How to interpret it safely
Complete missing information and correct inconsistent or out-of-range vessel, position and calculation values.
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
When a value is missing, inconsistent or outside its expected range, correct it at the source and calculate again before continuing.
Where the information comes from
Check your inputs: Before using a result, check its provider, datum, time basis, confidence and installed-data details.
Check your inputs
Check your inputs: Complete missing information and correct inconsistent or out-of-range vessel, position and calculation values.
Understand the calculation
Check your inputs: Keep the units, vessel particulars, time zone and selected method in view when reading a result or export.
When to stop and review
Check your inputs: Read each warning, correct its cause and recalculate before continuing.
Use it within its limits
Check your inputs: 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.
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