Swords

Swords are used through out One Piece by various Swordsmen and come in different grades.

Katana
is a type of Japanese sword. Tashigi's Shigure, is a Katana

Daito ("Long Sword")
Rather than a specific weapon, this is actually a category of blades under which both the katana and tachi fall. To qualify as a daitō the sword must have a blade longer than 2 shaku (approximately 24 inches or 60 centimeters) in a straight line. In the case of Roronoa Zoro, all three swords that he uses for his Santoryu are all confirmed as Daito katanas

Nodachi ("Field Sword")
A large two-handed Japanese sword. Compared to the katana, the nodachi was more difficult to wield due to its size and weight, but -- like any weapon -- could be extremely deadly if the warrior wielding it was skilled. The length of the nodachi's hilt varied between twelve to thirteen inches (30 to 33 centimeters). Its cutting capability and range exceeded that of a katana, due to its weight and size. The captain of the Heart Pirates, Trafalgar Law wields one of these

Katana Grade Swords

 * Saijō Ō Wazamono Grade Swords


 * Ō Wazamono Grade Swords


 * Ryō Wazamono Grade Swords


 * Wazamono Grade Swords

Other Swords

 * Mihawk's Black Sword
 * Arlong's Kiribachi
 * Kashū
 * Ohm's Sword
 * T-Bone's Sword
 * Funk Freed
 * Kaku's Swords
 * Helmeppo's Swords
 * Shanks's Sword


 * Note: The swords are not listed by strength.

Swords names

 * Katana
 * Sabre