Haw. Rev. Stat. § 88
That the Territory of Hawaii shall comprise a customs district of the United States, with ports of entry and delivery at Honolulu, Hilo, Mahukona and Kahului.
Honolulu is a Pacific port of the United States within tariff act allowing a drawback on coal used on steamers engaged in trade between Atlantic and Pacific ports of United States: 24 Ops. 6. See also §§93, 98, of this act; also Chronological Note of Acts Affecting Hawaii for other legislation by Congress relating to customs and kindred subjects; and note to Joint Resolution of Annexation, as to customs duties between annexation and the establishment of Territorial government in RLH 1955.
Honolulu is a "port or place in the United States" within the meaning of the shipping act. 36 Ops. 352.
HRS § 88