Foreword Power vessels are power plants installed on marine or offshore vessels (e.g.@ barges@ ships@ offshore installations@ mobile offshore units@ and converted vessels) that offer a quick and economic method of providing power to remote locations. To meet the increasing global demand@ this Guide has been developed to provide requirements on design@ construction@ and survey for class review and approval of power vessels. This Guide is for the use of designers@ builders@ owners@ and operators and specifies ABS requirements for obtaining the classification notation Power Service. This Guide is applicable to power barges@ power ships@ power offshore installations (OI)@ power mobile offshore units (MOU)@ which includes self-elevating units (SEU) and column-stabilized units (CSU)@ and power converted vessels. Power vessels can be equipped with single or multiple gas turbines@ reciprocating diesel or gas engines@ or boilers for power generation. In this Guide@ the requirements of the power generation and distribution equipment installed on board are associated with an optional notation. Design and installation requirements for power generation and distribution equipment included in this Guide are based on existing industry practices that are deemed to provide an adequate level of safety. The application of this Guide by ABS will not prevent the use of technological approaches that can demonstrate an acceptable level of safety. Power generation and distribution equipment designed@ constructed@ and installed in accordance with the requirements of this Guide on an ABS classed vessel@ barge@ offshore installation@ or mobile offshore unit@ under ABS review and survey@ will be classed and identified in the Record by the optional notation ? Power Plant. This Guide is to be used in conjunction with other Rules published by ABS and recognized international Regulations. This Guide becomes effective on the first day of the month of publication. Users are advised to check periodically on the ABS website www.eagle.org to verify that this version of this Guide is the most current. We welcome your feedback. Comments or suggestions can be sent electronically by email to rsd@eagle.org.