Pneumatic floats Treadway B

The pneumatic float consist of 2 indentical half-floats, each 9 by 22 feet, joined stern-to-stern, to form a complete float 9 feet wide, 44 feet long and 3 feet high. Each half-float is made up of three tubes laced together longitudinally. Each tube is divided into four inflation chambers, fitted with a valve. The tapered noses or bow ends of the tubes are upswept about 40 from the horizontal and are provided with laced skirts. These skirts prevent debris from lodging between the tubes, improve the hydraulic characteristics of the float, and protect the tubes during launching.
The half float weights 750 pounds