For the purpose of this subpart:
Arrives on the OCS means when a vessel enters any OCS block area to commence operations for which it has submitted a Notice of Arrival under Sec. 146.405(b)(2).
OCS block area means the names given by the Bureau of Ocean Energy Management, (BOEM) to define the OCS areas used to facilitate management or leasing on the OCS. [USCG-2008-1088, 76 FR 2262, Jan. 13, 2011, as amended by USCG-2013-0797, 79 FR 36405, June 27, 2014]