The sai (釵) is a traditional weapon used in the Okinawan martial arts. The basic form of the weapon is that of a pointed, prong shaped metal baton, with two curved prongs (yoku) projecting from the handle (tsuka). In Japan it is commonly believed that the sai had a dual purpose, one as a weapon and the other as an implement for the planting of rice (similar to how nunchaku were used for threshing rice and as a weapon). The prongs would hold a clump of rice in place and then it would be pushed under water while the tip made a hole for the roots to be set in. There are many types of sai with varying prongs for trapping and blocking.
Before its arrival in Okinawa, the sai was already being used in other Asian countries including India, Thailand, China, Vietnam, Malaysia, and Indonesia. Silat practitioners typically refer to the sai either as chabang (alternatively spelled tjabang) in Indonesian or tekpi in Malay. Based on the Indian trisula, early evidence in the form of Javanese art shows that the chabang predates[when?] the sai's use in Okinawa and China. The word trisula itself can refer to both a long or short-handled trident. Because the trisula was created in South Asia, it is possible that the sai originated in India and spread along with Hinduism and Buddhism. This is supported by the fact that the trisula is important as a Hindu-Buddhist symbol.
The sai eventually reached Japan in the form of the jitte, which usually has only a single prong although some jitte have two prongs like a sai. Both are truncheon-like weapons, used for striking and bludgeoning.
Parts of the sai
- Monouchi, the shaft of the sai, this can be round or faceted.
- Yoku, the prong like side guards which are usually symmetrical but the manji design developed by Taira Shinken employs oppositely-facing yoku resembling the reverse swastika (manji) from which it takes its name.
- Tsume, the tip of the side guard (yoku).
- Moto, the actual center point between the two side guards.
- Tsuka, the handle of the sai. The tsuka can be wrapped with different materials such as cord or ray skin (same) to provide a grip.
- Tsukagashira, the butt end of the handle (tsuka).
- Saki, the tip or point of the sai which is usually blunt and not pointed.
The sai is typically used in pairs, with one in each hand. Five kata are commonly taught, including two kihon kata. The style includes a variety of blocks, parries, strikes, and captures against attackers from all directions and height levels. Use of the point, knuckle and central bar is emphasized, as well as rapid grip changes for multiple strikes and blocks.
The utility of the sai as a weapon is reflected in its distinctive shape. It is primarily used as a striking weapon for short jabs into the solar plexus but it also has many defensive techniques.
There are several different ways of wielding the sai, which give it the versatility to be used both lethally and non-lethally. One way to hold it is by gripping the handle with all of the fingers and pinching the thumb against the joint between the handle bar and the shaft. This allows one to manipulate the sai so that it can be pressed against the forearm and also help avoid getting the thumb caught in the handle when blocking an attack. The change is made by putting pressure on the thumbs and rotating the sai around until it is facing backwards and the index finger is aligned with the handle.
The knuckle end is good for concentrating the force of a punch, while the long shaft can be wielded to thrust at enemies, to serve as a protection for a blow to the forearm, or to stab as one would use a common dagger. In practice, some prefer to keep the index finger extended in alignment with the center shaft regardless of whether the knuckle end or the middle prong is exposed. The finger may be straight or slightly curled. Used in this way, the other fingers are kept on the main shaft, with the thumb supporting the handle.
The grips described above leverage the versatility of this implement as both an offensive and a defensive weapon. Both grips facilitate flipping between the point and the knuckle being exposed while the sai is held in strong grip positions.
- Donn F. Draeger & Rober W. Smith (1969). Comprehensive Asian Fighting Arts. ISBN 978-0-87011-436-6.
- The Secret Royal Martial Arts of Ryukyu, Kanenori Sakon Matsuo, BoD – Books on Demand, Mar 31, 2005 P.81
- Black Belt, Aug 1993, Vol. 31, No. 8, p.51, ISSN 0277-3066, Published by Active Interest Media, Inc.
- Fumio Demura, Sai: Karate Weapon of Self-Defense
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