Charts detailing the underwater topography, coastlines, and navigational aids of the body of water separating Long Island from Connecticut and a portion of New York are crucial tools. These depictions include bathymetric data, showing water depths, and locations of buoys, lighthouses, and other maritime infrastructure. For example, a vessel transiting the waterway would rely on such a representation to avoid shallow areas and locate safe passage routes.
These visual guides offer substantial advantages in maritime transportation, recreation, and scientific research. Historically, they were created using laborious surveying techniques, while modern methods employ sonar and satellite imagery for greater accuracy and efficiency. Their accurate maintenance is vital for safe navigation, efficient shipping, and the protection of marine ecosystems.