Tides and passage window

Preliminary depth, tide and safe passage timing checks.

A tool for preliminary passage planning in areas with noticeable water-level changes and depth constraints.

Tides

Safe passage window calculation

A tool for preliminary passage planning in areas with noticeable water-level changes and depth constraints.

Place / port / marina Date Units Draft Under keel clearance Charted depth / channel depth

Data mode

Auto Manual input

Next high water: —

Next low water: —

Now: —

Station: —

Passage

Waiting for calculation.

Enter depth, draft and under keel clearance.

Charted depth + tide = available depth.

Required depth: —

Minimum available depth: —

Maximum available depth: —

Tide events

Select a place and date to load tide events.

Reference information and preliminary calculations only. Verify all data against official sources and actual conditions before navigation decisions.

Time	Tide event	Height, m
No tide data loaded yet.