### Question
Can you define what product tank vessel means?


### Answer
**Product tank vessel** is defined as the following in *46 U.S.C. § 53101*:

> 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**

