Ok! I'm a newbe here, but I think I can help. The lines on the image are "range" lines not depth. HB si pings straight down and to the sides 40 feet from Your boat. The boat is over 22.5 feet of water. The period between 22 and 5 is 30 feet to the left of boats path. Part of the school of fish are 10 feet to the left of boat's path.