They were equipped with powerful engines for navigating at ten or 11 miles per hour and regulating the speed in order to drag the great net through the depths. The net was raised with motorized winches.
Estaban equipados con potentes motores para navegar a diez o 11 millas por hora y regular la velocidad para el arrastre en profundidad de la gran red, contando además con guinches a motor para su izado.