### Question
How does the law define product tank vessel?


### Answer
Under *46 U.S.C. § 53101*, **product tank vessel** is defined as:

> a double hulled tank vessel capable of carrying simultaneously more than 2 separated grades of refined petroleum products

#### Citation:
  - *46 U.S.C. § 53101*
  - Heading: **Subtitle V-Merchant Marine > Part C-Financial Assistance Programs > CHAPTER 531-MARITIME SECURITY FLEET**

