43 Practical training should be given in:
                        
                        
                        
                        
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                                 .1 correct and efficient operation of the GMDSS
                                 sub-systems and equipment prescribed for ships operating in sea area
                                 A1 under normal propagation conditions and under typical interference
                                 conditions;
                              
                              
                              
                            
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                                 .2 safe operation of relevant GMDSS communication
                                 equipment and ancillary devices, including safety precautions; and
                              
                              
                              
                            
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                                 .3 operational techniques for use of:
                              
                              
                              
                              
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                                       .3.1 VHF, including channel, squelch, and mode
                                       adjustment, as appropriate;
                                    
                                    
                                    
                                  
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                                       .3.2 radio life-saving appliances;
                                    
                                    
                                    
                                  
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                                       .3.3 emergency position-indicating radio beacons
                                       (EPIRBs); and
                                    
                                    
                                    
                                  
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                                       .3.4 NAVTEX receivers.