An odachi, a historically significant Japanese sword, typically weighs between 2.2 to 14.5 kilograms (4.9 to 32.0 pounds). This significant weight range reflects the sword's varying lengths and specific designs, as odachi were known for their exceptionally long blades.
Understanding the Odachi's Mass
The weight of an odachi is directly related to its impressive size, distinguishing it from more common Japanese swords like the katana. These swords were designed for specific purposes, often requiring the strength of more than one person to wield effectively, or for ceremonial and votive offerings.
Odachi Specifications
| Specification | Details |
|---|---|
| Mass | 2.2–14.5 kg (4.9–32.0 lb) |
| Blade Length | Approximately 90.9 cm (35.8 in) (3 shaku) to 226.7 cm (89.3 in) (7 shaku 5 sun) |
| Period Produced | Kamakura period (1185–1333) to present |
The wide range in mass is primarily due to the considerable variation in blade length. Shorter odachi, though still larger than standard swords, would be on the lower end of the weight spectrum, while the truly massive examples, sometimes exceeding 2 meters (over 6 feet) in blade length, would account for the higher weights.
Factors Influencing Odachi Weight
Several elements contribute to an odachi's overall weight:
- Blade Length and Thickness: The most significant factor. Longer and thicker blades inherently mean more material and thus more weight.
- Material Composition: While primarily steel, slight variations in the type of steel or forging methods could subtly impact density.
- Fittings and Tsuka (Handle): Though the blade constitutes the majority of the weight, the guard (tsuba), handle wrapping, and pommel also add to the total mass.
The sheer mass of an odachi meant that wielding it in combat was a specialized skill, often requiring unique stances and techniques. For more information on this fascinating historical weapon, you can explore the Ōdachi on Wikipedia.
