Why it matters
Signed global FES predictions, NOAA high/low-water events, available current sources, visible datum and confidence, point UKC, route UKC, squat and operational safety margins.
Signed global FES predictions, NOAA high/low-water events, available current sources, visible datum and confidence, point UKC, route UKC, squat and operational safety margins.
Signed global FES predictions, NOAA high/low-water events, available current sources, visible datum and confidence, point UKC, route UKC, squat and operational safety margins.

Signed global FES predictions, NOAA high/low-water events, available current sources, visible datum and confidence, point UKC, route UKC, squat and operational safety margins.
Professional tides, currents and UKC keeps the important inputs, source details, warnings and saved result together, so you can understand what shaped the answer.
The screens below show the main parts of Professional tides, currents and UKC and the result you can expect after completing the task.
Some tools need a completed vessel profile, installed offline data, an internet connection or Premium access. CaptainCalc tells you what is needed before you begin.



CaptainCalc is decision support. It never replaces approved stability data, loading computers, ECDIS, official publications, procedures or professional judgment.
Freemium keeps essential online tools available with ads. Premium removes ads, raises limits and unlocks the complete offline professional workspace.
