Introduction
                        
                        
                        
                        
                           1 The purpose of the control procedures of regulation I/4 is to enable officers duly authorized by
                           port States to ensure that the seafarers on board have sufficient competence to
                           ensure safe, secure and pollution-free operation of the ship. 
                        
                        
                        
                        
                        
                           2 This provision is no different in principle from
                           the need to make checks on ships’ structures and equipment. Indeed, it builds
                           on these inspections to make an appraisal of the total system of onboard
                           safety, security and pollution prevention.
                        
                        
                        
                      
                     
                     
                     
                        Assessment
                        
                        
                        
                        
                           3 By restricting assessment as indicated in section A-I/4, the subjectivity which is an unavoidable element in
                           all control procedures is reduced to a minimum, no more than would be evident
                           in other types of control inspection. 
                        
                        
                        
                        
                        
                           4 The clear grounds given in regulation I/4, paragraph 1.3 will usually be sufficient
                           to direct the inspector’s attention to specific areas of competency, which
                           could then be followed up by seeking evidence of training in the skills in
                           question. If this evidence is inadequate or unconvincing, the authorized
                           officer may ask to observe a demonstration of the relevant skill. 
                        
                        
                        
                        
                        
                           5 It will be a matter for the professional
                           judgement of the inspector when on board, either following an incidentfootnote as outlined in regulation I/4 or for the purposes of a routine inspection, whether
                           the ship is operated in a manner likely to pose a danger to persons, property
                           or the environmentfootnote.