...from gross income of nonresident alien individuals. (a) Earnings of foreign ships or aircraft — (1) Basic rule. So much of the income from sources within the United States of a nonresident alien individual as consists of earnings derived from the operation of a ship or ships...

...from gross income of nonresident alien individuals. (a) Earnings of foreign ships or aircraft — (1) Basic rule. So much of the income from sources within the United States of a nonresident alien individual as consists of earnings derived from the operation of a ship or ships...

...from gross income of nonresident alien individuals. (a) Earnings of foreign ships or aircraft — (1) Basic rule. So much of the income from sources within the United States of a nonresident alien individual as consists of earnings derived from the operation of a ship or ships...

...from gross income of nonresident alien individuals. (a) Earnings of foreign ships or aircraft — (1) Basic rule. So much of the income from sources within the United States of a nonresident alien individual as consists of earnings derived from the operation of a ship or ships...

...from gross income of nonresident alien individuals. (a) Earnings of foreign ships or aircraft — (1) Basic rule. So much of the income from sources within the United States of a nonresident alien individual as consists of earnings derived from the operation of a ship or ships...