San no mai, Shirafune

is a technique of Rukia Kuchiki's Zanpakutō, Sode no Shirayuki.

Description
Rukia calls out the name of the dance, which allows her to gather moisture in the air to the tip of Sode no Shirayuki to create a blade of ice. This makes it possible to alter the length of the blade, and repair it if the blade was broken. After piercing its target, it continues to freeze any surrounding objects, including the immediate area.