🛠️ Invention or technique

Kanrin Maru (Japanese steam corvette crossing the Pacific)

Kanrin Maru (corbeta de vapor japonesa que cruzó el Pacífico)

Date
1860 · confidence high
Place
Uraga, Yokosuka, Kanagawa, Japan
Credited to
Katsu Kaishū, Nakahama Manjirō and the shogunate navy, with Lt. John M. Brooke
Field
Movement

⚠️ Disputed: the sources disagree.

What it is

A screw steam corvette built in the Netherlands in 1857 in which a Japanese crew crossed the Pacific to San Francisco in 1860, accompanying the embassy for the friendship treaty with the United States.

Brooke's American sailors helped through the voyage's storms; command was Japanese (Kimura and Katsu), although how much depended on that help is debated.

What it led to

  • Japan's modern navy and the Nagasaki naval school
  • first Pacific crossing by a Japanese steam crew
  • Japan's opening to Western technical exchange
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Sources✓ verified 2026-11-06