Acoustic telemetry activities at the Hammond Bay field site. A schematic of the VPS array that was located in Lake Huron around the mouth of the Ocqueoc River (blue line). Triangles represent receiver (VR2W) positions. VPS array testing in 2010 included two stationary tag tests (Gray dots, with median point as a black dot) and three mobile test transects (black dots forming lines). The schematic is oriented with north up and the black line running from left to right (east to west) represents the coast.