Moving the chart

Turning the chart, and squaring it up

Shift + drag with a mouse, or twist two fingers on a touch screen. The chart turns about the centre of the view.

The north bubble in the top right corner points north the whole time. Press ⌘↑ (Ctrl+↑) and the chart returns to north-up.

Clicking or tapping the bubble does something else: it locks the chart to your boat. See holding the boat on the screen.

On a touch screen the twist waits until you have turned about 18 degrees. Two fingers never pinch without some twist, and without the pause every zoom would also spin the chart.

Going to a scale

Click the blue scale in the bar at the bottom.

• Type a scale and press Return. 25000, 25,000, 1:25000 and 25k all mean the same thing.
• Or pick a band: Berthing, Harbor, Approach, Coastal, General. The band you are in is marked.

If you ask for more than the survey holds, the chart stops at the closest scale it has.

Searching for a position

The search bubble is in the top left corner. Type a position and press Return. Latitude first:

• 38.978, -76.492
• 38°58'40"N 076°29'32"W, or 38 58 40 N, 76 29 32 W

The zoom and the rotation stay as they are. Search by place name is not available yet.

Keyboard shortcuts

Mac uses Command. Windows and Linux use Control.

Key	Action
⌘O	Open a chart or a folder
⌘+ and ⌘−	Zoom in and out
⌘0	Fit the whole chart
⌘↑	North-up
⌘L	Next colour scheme: day, dusk, night
⌘T	Text on or off
⌘⇧S	Soundings on or off
⌘D	Full detail on or off
⌘,	Mariner settings
Ctrl+F	Search (Windows and Linux)

Mouse and trackpad gestures

Action	Result
Drag	Pan. Throw it and the chart coasts to a stop.
Shift + drag	Turn the chart about the centre. It follows the drag.
Wheel, or two-finger scroll	Zoom at the pointer.
Pinch on a trackpad	Zoom at the pointer.
Click a vessel	Pin its bubble. A click elsewhere closes it.
Right-click	The chart menu: the pick report, a mark, the position.
Double-click (Windows and Linux)	Zoom in at the pointer.

Touch gestures

Action	Result
Drag one finger	Pan. Throw it and the chart coasts to a stop.
Pinch	Zoom between the fingers.
Twist two fingers	Turn the chart.
Tap a vessel	Pin its bubble. A tap elsewhere closes it.
Press and hold (Linux)	The chart menu at the finger.
Double tap	Zoom in.
Two finger tap (iPad and iPhone)	Zoom out.