What is the primary focus of coastal navigation?

The primary focus of coastal navigation is navigating along coastlines using visual landmarks and charts. This type of navigation is particularly important for vessels operating in coastal waters where mariners rely on visible features such as landmarks, buoys, and coastline characteristics to safely plot their course and avoid hazards. The use of charts is essential as they provide detailed information about water depths, navigational aids, and potential dangers in the area close to shore.

In contrast, navigating using only radar systems, navigating deep offshore using satellites, and navigating only at night by sky observations do not align with the primary principles of coastal navigation. While radar and satellite navigation play significant roles in various maritime operations, they are not the core focus of coastal navigation, which emphasizes the use of visual cues and chart references. Additionally, navigation solely at night by sky observations is not practical or reliable as a standalone method for coastal navigation, where continuous visual contact with the land is crucial for safe maneuvering.