How is “go to sea” used?

In The Ghost and Mrs. Muir (1947), one line is: “If I hadn't had a mother and two sisters to support, I'd have gone to sea myself.”

Which movie is “go to sea” from?

The clip at the top of this page is from The Ghost and Mrs. Muir (1947).

If I hadn't had a mother and two sisters to support, I'd have gone to sea myself.

5 作品で登場 · 1 本目

to become a sailor

5 本の映画に登場

定義：Oxford Advanced Learner's Dictionary 第 9 版