Question: who belongs to the san diego unified port district

title: Port of San Diego
text: Several cruise lines home port in San Diego , such as Holland America , Celebrity Cruises , Disney Cruise Line , and Royal Caribbean . Other cruise lines may also use San Diego as a port of call . Holland America uses San Diego as a home port during the winter season . Royal Caribbean used to regularly operate Mexico cruises from San Diego , but now only operates on the months of April and November operating cruises to Panama Canal . Disney Cruise Line has seasonal Mexican cruises in the spring and fall , as well as a Panama Canal cruise at the end of the visit . Carnival Cruise Lines used to operate from San Diego , but no longer does so after April 2012 . Carnival Elation was the only cruise ship that operated from San Diego on a year - round basis from 2007 to 2010 . Carnival Spirit seasonally operated from the port during fall and winter seasons . It continued like that until Carnival ceased their cruise operations from San Diego . On May 2013 , Celebrity Cruises ' Solstice became longest cruise ship to dock in San Diego , during a Wine Country Coastal Cruise . The Port of San Diego experienced a 44 - percent growth in cruise calls between 2002 and 2006 , growing from 122 to 219 calls . Passenger numbers more than doubled in that time , from 276,000 in 2002 to 619,000 in 2006 . Cruise ship business peaked in 2008 , when the Port hosted 252 ship calls and more than 800,000 passengers . By 2011 , the number of ship calls had fallen to 103 , a decline blamed on the slumping economy as well as fear of travel to Mexico due to well - publicized violence there .