What are the waters called that are shoreward of the baseline?

The correct answer is internal waters. Internal waters are defined as the body of water that is located landward of the baseline, which is typically the low-water mark along the coast. These waters are under the full sovereignty of the coastal state, meaning that the state has complete control over the use and regulation of these waters, including fishing, navigation, and resource management.

In contrast, the Exclusive Economic Zone (EEZ) pertains to a zone extending 200 nautical miles from the baseline where a coastal state has special rights to explore and exploit marine resources but does not exert full sovereignty as it does over internal waters. Customs waters refer to specific zones for customs enforcement and regulations but do not encompass the full range of privileges associated with sovereignty. The high seas refer to all parts of the ocean that are not included in any nation's territorial waters, meaning they are open to navigation and use by all states but lack the sovereignty of internal waters.

Understanding the distinction of internal waters is crucial for tasks such as maritime law enforcement, environmental protection, and management of marine resources, as it determines the rights and responsibilities of states regarding those specific bodies of water.