maiden voyage

(nautical) The first trip of a vessel in its intended duty.

Japanese Meaning

初航海 / 処女航海

The captain announced that the ship would set off on its maiden voyage at dawn.

船長は、その船が夜明けに初航海に出ると発表した。

Sense（1）

(nautical) The first trip of a vessel in its intended duty.

The Titanic hit an iceberg and sank on her maiden voyage.

maiden voyages

（ plural ）