4.1.1 One-man submersible atmospheric diving suits shall, where appropriate, have
                                 sufficient buoyancy and stability to enable a properly trained person to operate it
                                 in all sea states and conditions for which it is intended.
                              
                              
                              
                            
                           
                           
                           
                              
                              
                              4.1.2 Instructions showing operating procedures shall be provided for each suit in intended
                                 service conditions together with emergency procedures. The instructions shall take
                                 into account the fully submerged and transient submerging and surfacing conditions
                                 together with a full buoyancy condition. The effects of releasing any jettisonable
                                 devices either individually or in combination shall be taken into account.