Tides & UKC → select a station or coordinates and confirm that the required source or offline pack is available.

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.
Tides & UKC → select a station or coordinates and confirm that the required source or offline pack is available.




Resolve expired, unverified or missing-source states before saving. Compare operational limits with approved vessel, port and company information.
CaptainCalc is decision support. It never replaces approved stability data, loading computers, ECDIS, official publications, procedures or professional judgment.
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