Conn. Agencies Regs. § 12-711(b)-11
(a) (1) The income derived from Connecticut sources of a nonresident individual includes the full amount of compensation paid to such individual for the performance of regularly-assigned duties as a master, officer, or crewman on a vessel operating exclusively within Connecticut. His or her items of income, gain, loss and deduction derived from or connected with Connecticut sources include all of such items attributable to the performance of such duties.
(2) (A) No part of the compensation paid to a nonresident individual for the performance of duties described in paragraph (B) of this subdivision shall be subject to the income tax laws of any state or political subdivision of that state other than the state and political subdivision in which such individual resides. See 46 USC 11108(b). Accordingly, where a nonresident individual is paid compensation for the performance of duties described in paragraph (B) of this subdivision, such compensation does not constitute income derived from or connected with Connecticut sources even though the individual performed services in Connecticut.
(Effective November 18, 1994; Amended February 10, 2004)