Eiku Katas
Kihon Matsumura
Matsumura Dai
The eiku is simply a boat oar.  The length of
the eiku is about 5 Feet and about 1/2 of its
length is flattened to form the paddle surface.  
The eiku is manipulated similar to the bo that
the flat surface can be used to slash much like
a bladed weapon.
United Ryukyu Kempo Alliance