sternwards

Nevertheless they could always discern from it that their course, whether stemwards or sternwards, was steadily south.

Afterwards it is projected sternwards from the jets with a velocity v relatively to the ship, or v − V relatively to the earth.

Rozenoffski grasped at it desperately, but it eluded him, and then descending sailed sternwards.

Aback—Said of a sail when the wind blows on the back or wrong side of it and forces the boat sternwards.

You glance over the side of the hull, and see that the ground has begun to race away sternwards.