(vessels): Blocked vessels have been segregated into a separate section of the SDN List, below. Except in limited circumstances, financial institutions are instructed to reject any funds transfer referencing a blocked vessel and must notify OFAC, preferably via facsimile with a copy of the payment instructions, that funds h ave been returned to the remitter due to the possible involvement of a blocked vessel in the underlying transaction. See 31 C.F.R. § 501.604(b)(1). Financial institutions should contact OFAC 's Compliance Outreach and Implementation Division for further instructions should the name of a blocked vessel appear in shipping documents presented under a letter of credit or if noticed in a documentary collection. Blocked vessels must themselves be physically blocked should they enter U.S. jurisdiction. Freight forwarders and shippers may not charter, book cargo on, or otherwise deal with blocked vessels.
Note that on page 1103 of that PDF, there's a section set aside for blocked aircraft. I'll put two examples of the aircraft listings below:
(aircraft):
Blocked aircraft have been segregated into a separate section of the SDN List, below.
EK-30064; Aircraft Construction Number (also called L/N or S/N or F/N) 464; Aircraft Manufacture Date 17 May 1988; Aircraft Model A300B4-605R; Aircraft Operator MAHAN AIR (aircraft) [SDGT] (Linked To: MAHAN AIR).
EP-GOL; Aircraft Construction Number (also called L/N or S/N or F/N) 8305; Aircraft Manufacture Date 1991; Aircraft Model IL-76TD; Aircraft Operator YAS AIR; Aircraft Manufacturer's Serial Number (MSN) 1013409297 (aircraft) [SDGT] (Linked To: POUYA AIR).
On page 1107 theres a section for programs under which these entities or vessels are blocked (gives an idea of nationality) Heres' the section description:
References following each SDN indicate the sanctions program pursuant to which the person has been designated or identified :