SeaRover™ Deck CompassDirect read at paddle angle. The SeaRover Deck Compass mounts to your deck rigging or sits on top of a deck bag, giving you a clear bearing without lifting your eyes off the water. Built for tough marine use. A 2. 5 inch black direct read compass card with two sets of easy to read markings lets you check your heading from the top or the side. Anti slip rigid base with quick release buckles for fast attach and remove. No batteries. No app. No screen