Which of the following is located at the bow of the vessel?

The green and red navigation lights are specifically designed for installation at the bow of a vessel. These lights serve an essential purpose in maritime navigation and safety, as they help indicate the direction a vessel is facing and its orientation on the water. The green light is positioned on the starboard (right) side, while the red light is positioned on the port (left) side. This arrangement allows other vessels to determine if they are approaching the bow of the vessel head-on or passing it.

In contrast, options like the split duct deflector, all-round white light, and pilot console are not typically located at the bow. The split duct deflector refers to a structural component that directs airflow or water, while the all-round white light is often placed at the highest point of the vessel for visibility from all angles, particularly for anchored vessels. The pilot console is found in the cockpit or control area of the boat, which is distinct from the bow. Thus, the role and positioning of the green and red navigation lights firmly identify them as the correct answer for this question.