The condition of the survivor wasn't immediately clear, but a Harborview Medical Center spokeswoman says the patient is awake and alert.
Rear Adm. Gary Blore says the four-member crew was based in Sitka, Alaska, and was returning there from Astoria, Ore., when it crashed Wednesday morning off James Island, near La Push, Wash.
Residents of the nearby Quileute Nation rushed to help, pulling some of the crash victims from the water.
La Push is about 100 miles west of Seattle on Washington's Olympic Peninsula.
