An underwater topographic map (or bathymetric map) is a detailed contour map of the structure and depth underwater. With Deeper sonars you can create underwater topographic maps of any lake or river you fish. The maps are saved to your smartphone, and you can view them on your home computer too. They’re an amazing way to find features, rule out unproductive areas and discover new spots to try.
- Boat: you can use any Deeper sonar to make underwater topographic maps using Boat Mode on the Deeper app.
- From the shore: the PRO+ has inbuilt GPS, so you can use it to make underwater topographic maps from the shore by casting it out.
- You can view all your maps on any computer using Lakebook – the Deeper Data Manager. Just go to maps.deepersonar.com and login to view and analyse all your maps.
iBobber has no mapping function. The “contour mapping” function it has is simply scanning for structure.
Verdict: underwater topographic maps give you a real advantage in finding the best spots. Only Deeper sonars offer this function.