This Guide addresses the engineering and safety aspects related to industrial systems and equipment installed onboard vessels or mobile offshore units classed with ABS other than those covered by the ABS Rules for Building and Classing Facilities on Offshore Installations. The scope of the Guide is limited to industrial systems and equipment necessary for pipe laying operations of a dedicated offshore support vessel or unit. However@ the requirements of this Guide may be applied to other types of industrial equipment installed onboard vessels and/or mobile offshore units such as cable laying@ pile driving@ offshore construction maintenance@ or anchor handling considering equivalent recognized standards where recognized standards are referenced in this Guide. The specialized offshore industrial systems and equipment may be permanent@ temporary or portable.