Schottel Werft of Germany has developed the twin propeller (STP) which seeks to significantly reduce efficiency loss due to vortices around the propeller. In trials, the system reportedly provided ...

To improve efficiency, Schottel has developed the Twin Propeller. The propeller load is distributed to two propellers, one forward and one aft of the lower housing. With two airplane type fins ...

Lithium Battery for R208 R308 2008 R206 V003 RC Remote Control Boat Small internal resistance, good for rate charge and discharge, high efficiency output performance. Main protection function ...

The Royal Navy, British Army and Royal Air Force are responsible for the protection of the UK and its interests, both at home and abroad. The services have commitments across the globe but have ...