While watching sailboats drifting in the distance, you nearly sideswipe a neighboring buoy. With the Si-Tex T-1500 series of radars, you can track close-by and far-off obstacles simultaneously on a high-resolution, color 15" screen. The radars use varying colors to depict the different strengths of returning echoes. You can also track 10 designated targets and access information about their distance, speed, bearing, course, and closest point of approach. A built-in alarm system sounds if you risk a collision or lose a target. Price: $9,395 to $14,595. Contact Si-Tex at 727/576-5734, www.si-tex.com.