Which Navy staff section is primarily involved with planning and targeting?

The Navy staff section primarily involved with planning and targeting is the N5 section. The N5 is responsible for strategic and operational planning, which includes the development of plans for operations and the identification of targets. This section focuses on long-range planning and helps to ensure that the Navy's strategies align with broader military objectives.

In contrast, the other sections have different functional areas: the N6 specializes in communications and information technology, the N1 focuses on manpower and personnel matters, and the N4 handles logistics and supply chain management. Each of these sections plays a crucial role within the Navy, but their responsibilities are distinct from the planning and targeting duties managed by the N5.