20.1.1 Main and/or auxiliary propulsion, main and auxiliary steering gear and
                                 jack-up machinery not in use when the installation is operating at a fixed location
                                 may not be subject to periodic surveys as required by Sections 2 to 19. The
                                 machinery may be retained on board in laid-up status as per manufacturers’
                                 recommendations. However, all overdue surveys and reactivation requirements are to
                                 be dealt with prior to recommissioning. The reactivation requirements will be
                                 advised by LR on request.
                              
                              
                              
                            
                           
                           
                           
                              
                              
                              20.1.2 If laid-up machinery is required to be used when the unit is disconnected
                                 from its moorings in an emergency, the periodic maintenance and operation schedules
                                 are to be in accordance with the manufacturers’ recommendations and specially agreed
                                 to by LR.