Never get stuck under a bridge again! We are pretty excited about the unique Augmented Reality (AR) feature we have just added to our popular SeaNav iOS marine navigation app. Set a SeaNav POI (Point of interest) marker for a bridge (or cable) on the SeaNav map view, set your boat’s Air Draft in SeaNav’s settings (5.5m for our test boat with its mast down) and see this as you approach the bridge in SeaNav’s AR view on your iPhone or iPad:-
This is one of the 3 low bridges we have to pass under on a tidal river around High Tide (12m at Springs) to get out to sea from our mooring. With the horizon line lined up with the sea level at the bottom of the bridge, the bold red line shows the height of your boat at the bridge. With the latest iOS camera APIs we can get the FoV parameters for any iOS device which allows us to do the relative drawing. The SeaNav POI feature comes included with our free version of the SeaNav App, Air Draught is now included as part of the SeaNav Pro In App Purchase feature ($10) which adds Augmented Reality and live ship AIS positions.