A buoyant target comprises an inflatable structure with a drogue chute attached to the periphery of the bottom of the inflatable structure. The drogue chute is an open flexible structure with a bottom end weighted with ballast to deploy it, and with ports through its side to permit water to flow into and out of it. A radar reflector device is attached inside the inflatable structure. The radar reflector device comprises a plurality of mutually orthogonal radar reflective surfaces having central reflection vectors pointed at predetermined directions.