Which of the following are key features of a hydrographic chart?

The key features of a hydrographic chart include the shoreline and navigation lines, which are crucial for safe and effective navigation in marine environments. The shoreline represents the interface between land and water, providing important information on coastlines, landforms, and potential hazards. Navigation lines, such as depth contours and channel markers, help mariners to understand the underwater topography and identify safe routes for vessels to follow.

These features are designed to aid navigators in making informed decisions, ensuring safe passage through challenging and variable marine conditions. While other aspects like weather patterns and tides, wind speeds, and water temperatures are indeed important in the broader context of maritime activities, they do not specifically define the fundamental features of hydrographic charts. Additionally, animal migration patterns are unrelated to the primary purpose of a hydrographic chart, which focuses on physical and navigational attributes of water bodies.