Young Brothers is an authorized common carrier by water under the Hawaii Water Carrier Act and currently licensed by the Public Utilities Commission to serve all major islands of the State of Hawai’i. The shipment of goods under its regulated water carrier service is governed by Local Freight Tariff No. 5-A. In addition to actual commodity rates, Tariff 5-A contains the sailing schedules for all port destinations and general rules applicable to all shipments.

Presently, there are twelve scheduled departures weekly from Honolulu serving the ports of Hilo and Kawaihae on the Island of Hawai’i, Kahului on Maui, Kaunakakai on Moloka’i, Kaumalapau on Lāna’i, and Nāwiliwili on Kauaʻi.