This standard describes generic measuring and calculation methods to evaluate the energy efficiency of individual maritime components. A maritime component is defined as having a single function. Maritime components are grouped according to their functionality to compare the energy efficiency of components which can solve the same task onboard a vessel. The standard is limited to components for which a “unit output” can be clearly defined and which require energy to function. The standard only covers energy consuming components. This standard deals with five types of components: a. Pressure components b. Flow components c. Lighting d. Heating/Cooling components e. Mechanical components The energy efficiency is evaluated using a specified set of global ambient conditions. The energy efficiency is also evaluated using ambient conditions for operation in arctic, tempered or tropical regions.