United States observers, while aboard foreign fishing vessels as required under subsection (b), shall carry out such scientific and other functions as the Secretary deems necessary or appropriate to carry out this section.
There is imposed for each year after 1980 on the owner or operator of each foreign fishing vessel that, in the judgment of the Secretary, will engage in fishing in waters described in subsection (b)(1) during that year which may result in the incidental taking of billfish a fee in an amount sufficient to cover all of the costs of providing an observer aboard that vessel under the program established under subsection (a). The fees imposed under this subsection for any year shall be paid to the Secretary before that year begins. All fees collected by the Secretary under this subsection shall be deposited in the Fund established by subsection (e).
There is established in the Treasury of the United States the Foreign Fishing Observer Fund. The Fund shall be available to the Secretary as a revolving fund for the purpose of carrying out this section. The Fund shall consist of the fees deposited into it as required under subsection (d). All payments made by the Secretary to carry out this section shall be paid from the Fund, only to the extent and in the amounts provided for in advance in appropriation Acts. Sums in the Fund which are not currently needed for the purposes of this section shall be kept on deposit or invested in obligations of, or guaranteed by, the United States.
The Secretary shall issue such regulations as are necessary or appropriate to carry out this section.