TM 5-1940-321-13&P
( 3 ) Maneuverability and the capability to negotiate surf waves are made easier and
more predictable.
( 4 ) The reduced drag, proper planning attitude, and airlift effect result in improved ride
quality and fuel economy in comparison to craft with conventional inflatable hull
designs.
b. After inflation, two isolator clamps (one for each buoyancy tube), when tightened, pinch flat the
connecting hoses between the main and lower buoyancy tubes to prevent airflow between tubes (see figure
3-15). This prevents loss of air from the main buoyancy tubes due to a puncture in either lower buoyancy tube.
Operators should become familiar with the location and operation of these clamps, as described in chapter 4,
paragraph 4-4a (3) (d). The connecting skirt between the main and lower buoyancy tubes absorbs shock and
reduces pounding from rough water operation. When the craft is stationary, water is present in the area
between the skirt and the tubes and acts as a ballast, adding to stability of the craft.
Figure 3-15. Clamp.
3-14
