"You've made plenty of row already.

I only hope you have not attracted attention on the island.
You may not have been heard, owing to the disturbance on the other side, but no thanks to any of you for that.

Our skipper's first notion was to put to sea.

Wasn't it natural?
Do you want to be hunted over Fernando Noronha at daybreak?
But he would have seen the uselessness of trying to slip the cruiser before the launch had gone a cable's length.

Now, here is a scheme that strikes me as workable.