26 U.S.C. § 1356: Qualifying shipping activities

core qualifying activities, qualifying secondary activities, and qualifying incidental activities. For purposes of this subchapter, the term “core qualifying activities” means activities in operating qualifying vessels in United States foreign trade. The term “qualifying secondary activities” means secondary activities but only to the extent that, without regard to this subchapter, the gross income derived by such corporation from such activities does not exceed 20 percent of the gross income derived by the corporation from its core qualifying activities. the active management or operation of vessels other than qualifying vessels in the United States foreign trade, the provision of vessel, barge, container, or cargo-related facilities or services to any person, ownership or operation of barges, containers, chassis, and other equipment that are the complement of, or used in connection with, a qualifying vessel in United States foreign trade, the inland haulage of cargo shipped, or to be shipped, on qualifying vessels in United States foreign trade, and the provision of terminal, maintenance, repair, logistical, or other vessel, barge, container, or cargo-related services that are an integral part of operating qualifying vessels in United States foreign trade, and such other activities as may be prescribed by the Secretary pursuant to regulations. they are incidental to the corporation’s core qualifying activities, they are not qualifying secondary activities, and without regard to this subchapter, the gross income derived by such corporation from such activities does not exceed 0.1 percent of the corporation’s gross income from its core qualifying activities. In the case of an electing group, subsections (c)(1) and (d)(3) shall be applied as if such group were 1 entity, and the limitations under such subsections shall be allocated among the corporations in such group.