L'E-KU is one of the superior weapons, studied after obtaining the black belt. .
E-KU is an oar used by fishermen, whose tradition is maintained in Hari, maritime festivities boat races, inherited from southern China via Taiwan.
Its characteristic points are the fine shape of the tip, the curve of one side of the pallet and a roof-like ridge along the other. One of the basic moves for this weapon encompasses the fact that a fighter fisherman on the beach would be able to throw sand on an opponent.
While not having the length and therefore the scope of the bo, the rather sharp edges can inflict more damage penetration when it is handled properly.