Translation of "sureness" into Chinese

Sail to Istanbul and make sure they get the rest of the way.

我 搭船 到 伊斯坦堡 確認 那些 東西能 安全 到 達

He is sure of winning the game.

他很有信心贏這場比賽。

I like a guy who's built and really sure of himself.

我 喜欢 一个 人 有 一个 良好 的 身体 和 自信 。

The Mars of the twentieth century is a lot less sure of itself in the twenty-first.

这个二十世纪耀眼的新星在二十一世纪却自信心大跌。