The the units of the PROFI LINE II - CAPITANO 140, MARINER 200, MARINER 250 and MARINER 320 - are designed for diving schools, for professional divers and those who operate professional filling stations, who rely apart of the high toughness of BAUER compressors, above all, on economic efficiency, extremely tough continuous operation and expansibility. After all, the diver wants to rely on his compressor during the whole season.