Here is a thermal camera designed to help you keep your boat out of trouble. The FLIR M232 has a resolution of 320 × 240p. It combines with FLIR ClearCruise to provide you with audible and visual alerts when non-water objects such as boats, obstacles, and markers appear in the view.
The FLIR M232 comes with 4x zoom, 360-degree pan, 110-degree tilt, and a 24 x 18 field of view. The above video shows it in action.