И отправились в пустынное место в лодке одни.
So they went away by themselves in a boat to a solitary place.
And they went away in the boat to a desolate place by themselves.
They went away in the boat to a secluded place by themselves.
So they left by boat for a quiet place, where they could be alone.
And they departed into a desert place by ship privately.
So they departed to a deserted place in the boat by themselves.
And they went away apart into a desert place by ship.