aidesàlanavigation aidstonavigation armementdesnavires certification electronicsinnavigation engineering firesandfireprevention fishers fishingboats formation gestion heavyweatherseamanship instrumentsnautiques manningofvessels marine marineaccidents marinemarchande marins(marinemarchande) merchantmarine merchantmariners nauticalinstruments naval navigation officers officiersdelamarinemarchande personnelmanagement pictorial safetymeasures sailboats sailing shipbuilding shipping ships studyandteaching technology trainingof transportation watchduty électroniqueennavigation