Translation guide
The first journey of a ship or, by extension, any vehicle or craft. In Japanese, the most common equivalent is 処女航海 (shojo kōkai), but other expressions exist depending on context.
Referring to the inaugural journey of a vessel, especially in nautical contexts.
The standard term for a ship's maiden voyage. Literally 'virgin voyage'. Used in both formal and informal contexts.
タイタニック号の処女航海は1912年でした。
The Titanic's maiden voyage was in 1912.
新しい客船が処女航海に出発した。
The new passenger ship set off on its maiden voyage.
Literally 'first voyage'. A more general term that can be used for any first sea journey, not necessarily the inaugural voyage of a ship. Less formal than 処女航海.
彼は初航海で船酔いした。
He got seasick on his first voyage.
Literally 'first voyage'. Rarely used; 初航海 is preferred. May appear in historical or technical contexts.
一番航海の記録が残っている。
Records of the first voyage remain.
Referring to the inaugural flight of a plane, rocket, or other flying vehicle.
The standard term for a maiden flight of an aircraft or spacecraft. Used in aviation and space contexts.
その新型ジェット機は来月初飛行を行う予定だ。
The new jet is scheduled to make its maiden flight next month.
スペースシャトルの初飛行は成功した。
The space shuttle's maiden flight was successful.
Analogous to 処女航海 but for aircraft. Less common than 初飛行 and may sound slightly poetic or old-fashioned.
伝説の飛行艇の処女飛行は1935年だった。
The legendary flying boat's maiden flight was in 1935.
Extending the concept to the first trip of a car, train, or other vehicle, or metaphorically to a new endeavor.
A general phrase meaning 'first journey'. Can be used for any vehicle or even a person's first trip. Not specific to vehicles.
新車での初めての旅は海辺へ向かった。
The maiden voyage of the new car was a trip to the seaside.
Used for the first commercial operation of a train, bus, or other scheduled service. Literally 'virgin operation'.
新幹線の処女運行は多くの乗客を乗せて行われた。
The maiden voyage of the Shinkansen was carried out with many passengers on board.
For many vehicles, you can form a compound with 初 (first) and the appropriate noun, e.g., 初運転 (first drive), 初乗車 (first ride). These are often used for personal first experiences rather than a vehicle's inaugural journey.
彼は新車の初運転を楽しんだ。
He enjoyed the maiden voyage of his new car.
処女航海 specifically refers to the first voyage of a ship itself, often with a sense of ceremony or historical significance. 初航海 can refer to any person's first voyage, not necessarily the ship's first. Use 処女航海 when talking about the ship's inaugural journey, and 初航海 when talking about someone's first experience at sea.
While 'maiden voyage' is often used figuratively in English for any first trip, Japanese 処女航海 is strongly tied to ships. For cars, flights, or other vehicles, use the appropriate term (初飛行, 初運転, etc.) or a general phrase like 初めての旅.