1 This regulation shall apply to ships of 1,600
                           gross tonnage and above:
                        
                        
                        
                        
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                                 .1 for which the building contract is placed on
                                 or after 1 July 2014; or
                              
                              
                              
                            
                           - 
                              
                              
                              
                                 .2 in the absence of a building contract, the
                                 keels of which are laid or which are at a similar stage of construction
                                 on or after 1 January 2015; or
                              
                              
                              
                            
                           - 
                              
                              
                              
                                 .3 the delivery of which is on or after 1 July
                                 2018,
                              
                              
                              
                            
                        
                        
                        
                        
                        unless the Administration deems that compliance with a particular
                           provision is unreasonable or impractical.
                        
                        
                        
                      
                     
                     
                     
                        
                        
                         
                           2 On ships delivered before 1 July 2018 and:
                        
                        
                        
                        
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                                 .1 contracted for construction before 1 July 2014 and
                                 the keels of which are laid or which are at a similar stage of construction on or
                                 after 1 January 2009; or
                              
                              
                              
                            
                           - 
                              
                              
                              
                                 .2 in the absence of a building contract, the
                                 keels of which are laid or which are at a similar stage of construction
                                 on or after 1 January 2009 but before 1 January 2015,
                              
                              
                              
                            
                        
                        
                        
                        
                        measuresfootnote shall be taken to
                           reduce machinery noise in machinery spaces to acceptable levels as
                           determined by the Administration. If this noise cannot be sufficiently
                           reduced the source of excessive noise shall be suitably insulated
                           or isolated or a refuge from noise shall be provided if the space
                           is required to be manned. Ear protectors shall be provided for personnel
                           required to enter such spaces, if necessary.
                           
                        
                        
                        
                      
                     
                     
                     
                        
                        
                         
                           3 Ships shall be constructed to reduce onboard
                           noise and to protect personnel from the noise in accordance with the Code on noise levels on board ships, adopted by the Maritime
                           Safety Committee by resolution MSC.337(91),
                           as may be amended by the Organization, provided that such amendments
                           are adopted, brought into force and take effect in accordance with
                           the provisions of Article VIII of the present Convention concerning
                           the amendment procedures applicable to the annex other than chapter
                           I. For the purpose of this regulation, although the Code on noise
                           levels on board ships is treated as a mandatory instrument, recommendatory
                           parts as specified in chapter I of the Code shall be treated as non-mandatory,
                           provided that amendments to such recommendatory parts are adopted
                           by the Maritime Safety Committee in accordance with its Rules of Procedure.
                           
                        
                        
                        
                      
                     
                     
                     
                        
                        
                         
                           4 Notwithstanding the requirements of paragraph
                           1, this regulation does not apply to types of ships listed in paragraph
                           1.3.4 of the Code on noise levels on board ships.”