Which of the following describes a 'stern' of a vessel?

The term 'stern' refers specifically to the back part of a vessel. This is an important aspect of nautical terminology, as it distinguishes the different parts of a boat or ship. The stern typically includes the area where control mechanisms, such as the rudder and propellers, are located, which are essential for maneuverability. Understanding the layout of a vessel, including the stern, is crucial for navigation, docking, and ensuring safe operation while at sea. Recognizing this terminology helps in effective communication among crew members and contributes to maritime safety. The other options – front part, area below the deck, and side of the vessel – pertain to different sections and do not accurately define the stern.