We set sail (for France) at high tide.

我们在涨潮时起航（前往法国）。

《牛津词典》

The ship will sail when wind and tide serve.

船将在风向和潮水有利时启航。

youdao

Sail while the wind blows; wind and tide wait for no man.

驶船要乘风，风潮不等人。（机不可失，时不再来。）

youdao

"With all my heart, I urge you to pull up an anchor and make full sail before we lose the tide and are left stranded on the beach, exposed to the coming storms."

VOA: standard.2009.09.28