Customs jurisdiction expansion transfers customs functions from excise formations to the Visakhapatnam Commissionerate, altering administrative control. The reorganization transfers customs functions formerly handled by Central Excise formations to the Commissioner of Customs, Visakhapatnam and expands the Principal Commissioner's territorial jurisdiction to include the Port of Visakhapatnam, Gangavaram Port, Visakhapatnam International Airport, the Special Economic Zone, Greater Visakhapatnam municipal areas, a specified Container Freight Station, and the continental shelf and Exclusive Economic Zone areas, with administration of customs work in those areas vested in officers under the Principal Commissioner pursuant to the cited notifications.