Trumpet approvedR.I.Na. ELE/118208CS/002 and LLOYD'S REGISTER MCA Bureau Veritas inaccordance with international standards COLREG 72, IMO class IV, approvedNMMA ABYC A-23. For work and pleasure boats of lengthfrom 12 to 20 m, 123 dB sound level, 315 Hz. Minimum audibility at sea of 0.5 nautical miles. Complete with electric compressor and mounting accessories.Weight kg. 6.5.