Arashi no Umi Katana Sword (嵐の海) – Stormy Sea

Arashi no Umi (嵐の海): the stormy sea

The storm-tossed sea, arashi no umi, is one of the most resonant themes in Japanese art. Rising waves and the wind that drives them have long served as symbols of nature’s raw power, and of the courage of those who face it.

This katana takes that imagery as the subject of its fittings: a tsuba in which stylised waves intertwine with trident motifs, the weapon of the sea’s divine rulers, and a fuchi and kashira on which waves and wind are sculpted in raised relief. The midnight-blue wrapping echoes the depths of the ocean.

A T10 steel blade with a genuine chōji hamon

The blade is forged in T10 steel, a high-carbon steel prized for its hardness and edge retention. It has been clay-tempered, bringing forth a genuine chōji hamon: a line of rounded, clove-bud festoons running the length of the blade.

Against the mirror-polished steel, this milky-white hamon stands out with remarkable clarity. The blade follows a shinogi-zukuri geometry with a chū-kissaki tip and no bo-hi groove.

Buke-zukuri fittings of waves and tridents

The kakumaru-gata tsuba (square with softly rounded corners) is crafted in black-patinated and gilded copper. Its hammered ground (tsuchime) is adorned with stylised waves evoking a storm-stirred sea and trident motifs, finished with a gilded rim (fukurin). It features a hitsu-ana aperture and is framed by gilded copper seppa with a knurled edge.

The fuchi and kashira in black-patinated and gilded copper carry waves and wind in raised relief (takabori). The handle combines a wooden core with white faux ray skin beneath a midnight-blue tsuka-ito in hineri-maki, completed by gilded and patinated menuki. The gilded copper habaki presents one face pierced in a geometric pattern against a nanako ground.

A black saya shimmering with silver

The saya is fashioned from solid wood and coated in a black lacquer with a silver-speckled effect, reminiscent of the glittering sea-foam of a night-time ocean. The koiguchi and kojiri are lacquered in keeping with the scabbard. The black-lacquered kurikata, fitted with a gilded shitodome, holds a midnight-blue cotton sageo.

Dimensions and handling

With a blade of 71 cm and an overall length of 103 cm, Arashi no Umi carries the proportions of a traditional katana. Its 26.5 cm handle provides a firm two-handed grip. At 1.5 kg, it delivers a commanding presence in the hand. Housed in its saya, the piece measures 105 cm in total, ideal for display on a wall mount or table stand.