On September 28, 1942, after the Sto. Domingo Church in Intramuros had been damaged during the initial bombing raids of World War II, the image of Our Lady of La Naval was tranferred, for reasons of safety, to the UST Chapel, and was enshrined there until October 10, 1954. The image was again transferred in a solemn procession to the newly-erected Convent of Santo Domingo in Quezon City.
In commemoration of the 50th year of the said transfer, the image of Our Lady of La Naval returned to the University on October 1, 1992. After the nine-day novena, Our Lady was brought back in a solemn procession to her shrine in Santo Domingo Church.
From : The Official UST Website [link]