One of the main reasons Helicópteros Marinoschose the five-bladed H145 was the greater payload it offers. XXXXXXXX. Helicópteros Marinos in figures Helicópteros Marinos Founded: 1978 Fleet: 2 four-bladed H145s, 2 five-bladed H145s, 1 H125 Missions: passenger and cargo transport to support offshore and onshore oil & gas operations, medical air transport, seismic prospecting for oil and mining operations, search and rescue, inspection of high voltage power lines and major helicopter maintenance. Bases: main base - Don Torcuato, Buenos Aires. Workshop - Rio Cullen, Tierra del Fuego. Other: approved Airbus Helicopters and Safran Maintenance Service Centre for Argentina and Uruguay.