From which of the following locations may an FCC-licensed amateur station transmit?

An FCC-licensed amateur station is permitted to transmit from any vessel or craft located in international waters if that vessel or craft is documented or registered in the United States. This is important because the United States holds jurisdiction over vessels registered in the country, allowing them to operate under U.S. laws, including FCC regulations, even while they are outside U.S. territorial waters.

When operating in international waters, a licensed amateur radio operator can utilize the privileges associated with their license without the restrictions typically imposed on land-based operations in foreign countries. Therefore, as long as the vessel is registered in the U.S., the operator can legally transmit as per their amateur license, adhering to the same regulations they would follow on land. This clarifies the responsibilities and operational liberty granted to licensed operators in maritime contexts.