Provides guidelines for the relative evaluation of hull and superstructure in normally occupied spaces, and shipboard vibration data, useful for the development and improvement of hull vibration reference amplitudes. Applicable to both turbine-driven and diesel-driven merchant ships of length between perpendiculars of 100 m or greater. The applicable frequency range is 1 Hz to 100 Hz. This Standard is technically identical to and reproduced from ISO 6954:1984.