7 MARINE PROPULSION INSTALLATIONS CONSISTING OF INTERNAL COMBUSTION ENGINES AND MACHINES, NAMELY DIESEL ENGINES, DIESEL-ELECTTRIC GENERATING SETS, DIESEL GENERATORS, EXHAUST-GAS TURBINES, HEAT EXCHANGERS, EXHAUST-GAS BOILERS, BLOWERS, COMPRESSORS, PUMPS, OIL SEPARATORS, TORSIONAL VIBRATION DAMPERS, COUPLINGS, GEARS, GEAR UNITS, SHAFT LINES, SHAFTINGS, SHAFT BEARINGS, STERN TUBE SEALS, MARINE PROPELLERS, PROPELLER NOZZLES, GENERATORS, ELECTRIC MOTORS; COMBINATION BLOCK HEATING POWER PLANTS AND BLOCK-TYPE THERMAL POWER STATIONS FOR GENERATING HEAT AND ELECTRIC ENERGY, CONSISTING OF INTERNAL COMBUSTION ENGINES AND MACHINES, NAMELY DIESEL ENGINES, EXHAUST-GAS TURBINES, HEAT EXCHANGERS, EXHAUST-GAS BOILERS, BLOWERS, COMPRESSORS, PUMPS, OIL SEPARATORS, TORSIONAL VIBRATION DAMPERS, COUPLINGS, GEAR UNITS, GENERATORS