Voisin

…aircraft such as the French Voisin, which carried some 130 pounds (60 kg) of small bombs that the observer simply picked up and dropped over the side.

Among the first were French Voisins. The type L was used in early 1915 to carry about 60 kg (130 pounds) of small bombs that simply lay in the bottom of the cockpit until the time came for the observer to drop them overboard. Later models had more powerful engines…