IPA: /ˈstɜrnwərd/
KK: /ˈstɜrnˌwɜrd/
In a direction toward the back part of a ship or boat.
The crew moved sternward to secure the ropes at the rear of the vessel.
Sternward → It is formed from "stern" (from Old English *styrne*, meaning rear or back) and "-ward" (meaning in the direction of). The word "sternward" means in the direction of the rear or back.
Think of the word 'stern' which refers to the back of a ship, and '-ward' indicating direction — so 'sternward' means moving towards the back.