God told Noah "it's time to go".  They went into the Ark and God shut the door.

We do not see that Noah could see outside of the Arc until 150 days after the flood ceased.

When God sends a flood, shuts the door and you can't see what is going on when you are tossed about and it seems like eternity; never forget...God has you in the palm of his hand, in the shadow of his wings, in the cleft of his rock.

Just keep your focus on Him and He will bring you through!