The U.S. submitted a motion to designate seven more vessels suspected of breaching the North Korean sanctions regime Monday, bringing the total number of ships awaiting blacklisting to 14, including a freighter that South Korea detained in March.

The formal proposal designating sanction-breaking ships is Washington’s second after it lodged its first motion in December, according to its mission to the U.N., citing the Open Source Center’s (OSC) findings that the vessels carried DPRK coal or iron ore in violation of U.N. Security Council Resolution (UNSCR) 2371.

The newly nominated boats are:

1. OSTROV ANTSIFEROVA (IMO 9178070)
2. EVERSUN (IMO 8356962)
3. SHUN