順風満帆 junpū manpan Smooth Sailing

順風満帆 (junpū manpan), fair wind, full sail, is a Japanese word, not a Chinese one: a medieval proverb pressed into four characters. It begins in ships' logs, literal, in 1876, turns figurative in a Confucian's kanbun before 1880, and was a business-history cliché by the 1930s, fifty years before the 広辞苑 admitted it in 1983.

Smooth Sailing (junpū manpan)

Smooth Sailing (junpū manpan) on a traditional Japanese Scroll by Master Eri Takase.

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Abstract

順風満帆, junpū manpan, is Japanese, fair wind, full sail: the medieval proverb 順風に帆を上げる pressed into four characters, literal in ships' logs from 1876 and figurative in kanbun before 1880, a business-history cliché by the 1930s, and in the 広辞苑 only from 1983. The Chinese say the wish the other way round, 一帆風順. Its neighbor, the Chinese blessing 一路順風, is the same fair wind seen from the gangway.

Overview

The sense. Fair wind, full sail: the medieval proverb 順風に帆を上げる pressed into four characters. Oldest witness 1876 in print, a legation ship's log. In the dictionaries from 1983 ^[1]. The same fair wind appears in the Chinese 一路順風, a fair wind the whole way, the blessing said to a traveler, which has its own history: one wind seen twice.

The words. 順風, the wind that blows the way you are going, is in the 続日本紀 for the year 700 and in the 史記's like shouting with the wind ^[2]. 満帆 is a sail filled to the full ^[2]. The two readings of 順風満帆 have been a quarrel since at least 1980. The dictionaries rule manpan and call manpo wrong; a 1980 broadcaster's survey found about five in ten saying manpan and three in ten manpo, and the open Japanese-English dictionary lists manpo first ^[1].

The text in English. The open Japanese-English dictionary, JMdict, glosses 順風満帆 smooth sailing ^[3].

The historical record

Before 1880: the Japanese word. 順風満帆 is not Chinese. At Wikisource the only Chinese text with the four characters in sequence is one line of a Qing poet, the fair wind fills the sail's breadth, where the phrase breaks across the words; the Chinese idiom for the wish is 一帆風順, one sail, fair wind ^[4]. In Japan the word begins in ships' logs, meaning exactly what it says. A legation vessel's log printed in the government gazette in 1876, the oldest print the National Diet Library's full-text search finds: at 1:45 p.m. weighed anchor, fair wind, full sail; at 7:35 reached Chefoo and anchored ^[5]. A manuscript log a day out of San Francisco: morning southwest wind, afternoon northwest; fair wind, full sail spread; before ten the wind uncertain and the ship rolled hard; by afternoon calm, and the ship went like an arrow ^[6]. A general's Pacific crossing of 1886: fair wind, full sail, as yesterday; 244 miles ^[7]. The figure appears first in kanbun, in the Tsu Confucian 土井聱牙, who died in 1880, telling his pupils what reading is like once the four gates of the classics are passed: fair wind, full sail; the greatest speed and the greatest joy; those who know it know it, and those who do not, do not ^[8]. Then in prose from 1894: a magazine's filled with fair wind and full sail, a sick man's letter of 1898 hoping for a fair-wind, full-sail recovery, a 1904 book on Japan itself under fair wind and full sail, with high hopes for the road ahead, a 1910 text on the world economy ^[9].

1929 to 1983: the cliché and the dictionary. The Library's count of books with the word goes from five in the 1910s to fourteen in the 1920s to ninety-six in the 1930s, and the books are company histories and regional who's-whos: a fair-wind, full-sail development, a fair-wind, full-sail season ^[10]. The dictionaries' first citation, a baseball history of 1929, sits in that genre ^[1]. The four-character dictionary says no pre-war dictionary has the word, and none of the 205 books the search finds is a dictionary; the 広辞苑 admitted it in 1983, and the four-character dictionaries call it a postwar word ^[1]. In print it is fifty years older than the dictionary's first citation, and a century older than the 広辞苑's entry.

The sense across time. 順風満帆 has two senses: the sailor's plain report, which is where it starts, though the dictionary's citation for it is the later one, 1953; and the figure, the dictionary's second sense, with the earlier citation, 1929. The Japanese word is the proverb's grammar removed: 順風に帆を上げる is something you do, 順風満帆 is a state you are in ^[11].

What is not a source. 順風満帆 is not Chinese: the Chinese say 一帆風順 ^[4]. It is not a proverb with a moral; it is a wish.

Today. 研究社 has he had exceedingly smooth sailing as a financier; a learners' corpus has he is on a roll ^[3]. The Kodansha Kanji Dictionary (Halpern 2013), under 帆, gives 順風満帆 smooth sailing, sailing before the wind; JMdict gives sailing before the wind to 一路順風 instead, so the two glosses the open dictionary splits between the two words sit together under the Japanese one there ^[11].

A reading

順風満帆 is the wish for the voyage, fair wind, full sail, Japanese, a sailor's log entry before it was anyone's metaphor, and the Chinese say the wish the other way round. 聱牙's line is the best reading of it: the wind and the full sail are what reading feels like after the four gates are passed, a joy that comes after the work. Its Chinese neighbor, 一路順風, is the wish at the gangway: the two are one wind seen twice.

References

1. 「順風満帆」, 精選版日本国語大辞典・デジタル大辞泉・四字熟語を知る辞典, at kotobank. https://kotobank.jp/word/順風満帆
2. 「順風」・「満帆」, 精選版日本国語大辞典・デジタル大辞泉・字通, at kotobank. https://kotobank.jp/word/順風 · https://kotobank.jp/word/満帆
3. JMdict (jisho, Weblio), 順風満帆; 研究社新和英中辞典, s.v. 順風; Tanaka corpus, at Weblio 英和・和英辞典. https://ejje.weblio.jp/content/順風満帆
4. 査慎行, 敬業堂詩集 卷1, 蕪湖關 (1650–1727); the idiom 一帆風順 at 楹聯叢話 卷3 (1840) and the late-Qing novels, at zh.wikisource.
5. 太政官日誌, 明治5年 第85–108号, 1876, scan 181. https://dl.ndl.go.jp/pid/787663/1/181
6. 石川鑑吉, 航海日誌 2巻 (manuscript), undated, scan 50. https://dl.ndl.go.jp/pid/2566783/1/50
7. 野津道貫, 欧米巡回日誌, 1886, scan 145. https://dl.ndl.go.jp/pid/760964/1/145
8. 土井聱牙, 聱牙遺稿 巻9–12, 1892, scan 118. https://dl.ndl.go.jp/pid/893651/1/118
9. 薇陽, 1894, scan 13 (its text layer); 永野武三郎, 用無遺稿, 1900 (a letter of 1898), scan 132 (its text layer); 高瀬花陵, 北清見聞録, 1904, scan 84; 大西猪之介, 帝国主義論, 1910, scan 234. https://dl.ndl.go.jp/pid/813329/1/13 · https://dl.ndl.go.jp/pid/872714/1/132 · https://dl.ndl.go.jp/pid/774469/1/84 · https://dl.ndl.go.jp/pid/993483/1/234
10. National Diet Library next-generation full-text search on 順風満帆, searched again 26 September 2026: 205 books to about 1949, counted by decade. https://lab.ndl.go.jp/dl/api/book/search?searchfield=contentonly&keyword=順風満帆
11. The Kodansha Kanji Dictionary, Jack Halpern, Kodansha, 2013, s.v. 帆.

Authors

Tim Jackowski (Systems Architect, Takase Studios, LLC) · 典 Ten (Anthropic Claude Fable 5.1, Takase Studios LLC)

AI written · Ten wrote the history. Tim Jackowski commissioned it and answers for it.

Checked · Claude Sonnet (Anthropic), 2026-09-15, citations — every claim tested at its address; some resolve; several resolve but differ; a couple do not resolve; the rest not openable; the leaves re-opened by hand at the catalogue's change history, the working folder and the books held here — several were found the same day, one the day after, and one among the page images held here; one witness added from a book held here (Halpern 2013); one note in the check corrected (the 340 tag was a mix-up)