Signal lights for cargo ships carrying dangerous cargoes (the explosive and organic peroxide cargo ships over 300 G. T., high pressure gas and ignitable liquid bulk cargo ships over 1,000 G.T.). These lights conform to the Maritime Traffic Safety Law. One all-round red flashing light, with 2 mile range visibility, flashes at regular intervals at a frequency of between 120 and 140 flashes per minute. Available with a glass or polycarbonate lens.