Two types of inland river barge were generally available in Europe for use in Sea Lion: the "peniche", which was 38.5 meters long and carried 360 tons of cargo, and the "Kampine", which was 50 meters long and carried 620 tons of cargo. Of the barges collected for the invasion, 1,336 were classified as "peniches" and 982 as "Kampinen". For simplicity's sake, the Germans designated any barge up to the size of a standard "peniche" as Type A1 and anything larger as Type A2.