"Day" and "Night" chart view.
Ability to lock "North up" or "Track up".
Measure distances using the "Ruler" tool.

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Navigate to waypoints using a Horizontal Situation Indicator (HSI).
This instrument is usually found in aircraft and graphically helps you stay on your course.

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3D Bathymetry (Charts&Tides+ only)

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Search for features, tides/currents, weather stations by name or near your vessel or chart location.

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Tide/current graphs for any date.
Drag your finger on the graph view to see the tide/current level for a particular time.

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Find current weather conditions.

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Tap the chart to get feature information including NOAA notes

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Information screen shows current location/speed/track and distance/bearing to waypoint.
Settings screen allows to personalize how Charts&Tides works.