A lifejacket which depends on inflation for buoyancy shall
                           have not less than two separate compartments, shall comply with the
                           requirements of paragraph 2.2.1 and shall:
                        
                        
                        
                        
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                                 .1 inflate automatically upon immersion, be provided
                                 with a device to permit inflation by a single manual motion and be
                                 capable of having each chamber inflated by mouth;
                               
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                                 .2 in the event of loss of buoyancy in any one
                                 compartment be capable of complying with the requirements of paragraphs
                                 2.2.1.5, 2.2.1.6 and 2.2.1.7; and
                               
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                                 .3 comply with the requirements of paragraph 2.2.1.11
                                 after inflation by means of the automatic mechanism.