#motorboat__powerboat  a boat propelled by an internal-combustion engine
  supertype:  #boat  a small vessel for travel on water
  subtype:  #cabin_cruiser  #launch  #outboard_motorboat  #speedboat  #water_scooter
  part:  #helm.steering_system  steering mechanism for a vessel; a mechanical device by which a vessel is steered
  part:  #internal-combustion_engine__ICE  a heat engine in which combustion occurs inside the engine rather than in a separate furnace; heat expands a gas that either moves a piston or turns a gas turbine
     part:  #engine_block__cylinder_block__block  a metal casting containing the cylinders and cooling ducts of an engine; "the engine had to be replaced because the block was cracked"
        part:  #piston_chamber__cylinder  a chamber within which piston moves
           part:  #intake_valve  a valve that controls the flow of fluid through an intake
     part:  #pressure-feed_lubricating_system__lubricating_system__lubricatingsystem__force-feed_lubricating_system__force_feed__forcefeed__pressure_feed  mechanical system of lubricating internal combustion engines in which a pump forces oil into the engine bearings
        part:  #oil_filter__oilfilter  a filter that removes impurities from the oil used to lubricate an internal-combustion engine
        part:  #oil_pump__oilpump  a pump that keeps a supply of oil on moving parts
     part:  #poppet_valve__poppet  a mushroom-shaped valve that rises perpendicular from its seat; commonly used in internal-combustion engines
     part:  #self-starter  an electric starting motor that automatically starts an internal-combustion engine
        part:  #electric_motor  a motor that converts electricity to mechanical work
           part:  #armature  coil in which voltage is induced by motion through a magnetic field
           part:  #brush.electrical_device  conducts current between rotating and stationary parts of a generator or motor
           part:  #field_magnet__fieldmagnet  a magnet that provides a magnetic field in a dynamo or electric motor
           part:  #rotor_coil__rotorcoil__rotor  the rotating armature of a motor or generator
           part:  #stator_coil__stator  mechanical device consisting of the stationary part of a motor or generator in or around which the rotor revolves
     part:  #supercharger  compressor that forces increased oxygen into the cylinders of an internal-combustion engine
  part:  #windshield__windscreen  transparent screen (as of glass) to protect occupants of a vehicle

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