Eku: 櫂 (Boat Oar)
The eku (櫂, also called kai, ウェーク, or エーク) is the oar used for propelling sabani boats. According to the 揆奮館 article, it is described as "a fisherman's blade comparable to a sword," emphasizing that the oar was the fisherman's principal weapon, used both for paddling and for striking and cutting in close combat.
Physical Characteristics
| Property | Detail |
|---|---|
| Length | ~180–200 cm (similar to bō) |
| Blade | Flat, paddle-shaped end for water propulsion |
| Shaft | Cylindrical hardwood handle |
| Material | Hardwood (traditionally tough, water-resistant wood) |
Tactical Applications
The 揆奮館 article notes that eku's edge, shaft, and water‑scooping end all have tactical roles:
- Blade edge: Can cut like a sword in close combat
- Shaft: Can strike with the same techniques as a bō
- Flat end: Can scoop sand or water into the opponent's eyes (砂掛け, "sand-throwing")
This multi-functional design makes the eku a versatile weapon adapted directly from its everyday fishing use.
The Tsuken Sunakake Connection
The famous Tsuken Sunakake no Kon (津堅砂掛けの棍) kata—usually classified as an eku kata—features the sand-throwing technique (砂掛け) prominently. This technique simulates combat on beaches, where the practitioner uses the oar's flat end to throw sand into the opponent's eyes to blind or distract them before striking.
Historical Context
Okinawan cultural and UNESCO‑related materials group eku with kama, tonfa, and kuwa as examples of agricultural or fishing tools that became weapons, reinforcing that eku grew directly from daily livelihood implements. Fishermen used these oars directly as weapons, making the eku a true "weapon of opportunity" that required no modification from its everyday form.
Kata
The Matayoshi curriculum includes eku forms, particularly those associated with Tsuken island tradition. The sand-throwing techniques are unique to eku practice and reflect the weapon's beach-combat origins.
Sources
- 琉球古武道武器術 — 揆奮館流武術: "Fisherman's blade comparable to a sword" description, principal weapon status, edge/shaft/scooping end tactical roles, sand-throwing (砂掛け) technique
- Ryukyu Kobudo Weapons: Eku (ウェーク/エーク) as oar for sabani boats, kata with sand-throwing techniques (砂掛け), beach combat simulation, fishing tools adapted for martial use
- d3b — NPColumn: Eku grouped with kama, tonfa, kuwa as agricultural/fishing tools that became weapons, UNESCO-related cultural materials
- Matayoshi Kobudo — Wikipedia: Matayoshi eku kata curriculum
- Okinawan kobudō — Wikipedia: Eku as weapon beyond the Taira eight, fishing-tool origin