USER GUIDE
Work professional tides and UKC
Select a station or coordinates, check the source, datum, confidence and validity, then review height or current. For UKC, enter draft, squat and safety margins and save the result with its source details.
How to interpret it safely
Select a station or coordinates, check the source, datum, confidence and validity, then review height or current. For UKC, enter draft, squat and safety margins and save the result with its source details.
The user guide explains what the information means, how the result is produced and which warnings or limits matter.
See the main screens
Practical learning and web tools
What to know before you use it
How to use this feature well
Interpret tide, current and UKC only with station, datum, valid time, source pack, confidence and every applied allowance visible together.
Where the information comes from
Work professional tides and UKC: Before using a result, check its provider, datum, time basis, confidence and installed-data details.
Check your inputs
Work professional tides and UKC: Complete missing information and correct inconsistent or out-of-range vessel, position and calculation values.
Understand the calculation
Work professional tides and UKC: Keep the units, vessel particulars, time zone and selected method in view when reading a result or export.
When to stop and review
Work professional tides and UKC: Read each warning, correct its cause and recalculate before continuing.
Use it within its limits
Work professional tides and UKC: 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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