Alaska Admin. Code tit. 15, § 165.130
An operator shall calculate the amount subject to tax imposed by AS 43.35.210 by multiplying adjusted gross income from gaming or gambling earned during the entire voyage by the percentage of gaming or gambling hours conducted in waters under the state's jurisdiction. The operator shall calculate the percentage by dividing the total number of gaming or gambling hours while in waters under the state's jurisdiction by the total number of gaming or gambling hours during the entire voyage.
(Eff. 4/11/2008, Register 186)