Thread: Navionics chart card on southern lakes

Yeah, that's the generic base contours - things like lake floor info and individual obstructions won't be part of it. It's enough to get you from a - b and back and with a bit of local knowledge you are good to go but as an example the base contours on one point in Lake Rotoehu had you in 3m of water before the lake level came right up - but in reality there was a little bar coming out off the point and it was only about 0.5m for a few meters wide. If you kept wide away from the edges you'd be fine, but if you were not careful it would be a sudden stop.