### Question
How does Title 19—Customs Duties define vessel of the United States?


### Answer
Under *19 CFR § 4.0*, **vessel of the United States** is defined as:

> any vessel documented under the laws of the United States.

#### Citation:
  - *19 CFR § 4.0*
  - Heading: **Title 19—Customs Duties > PART 4—VESSELS IN FOREIGN AND DOMESTIC TRADES**

