 At sunrise on 25 July 1953 New Jersey was off the key port , rail and communications center of Hungnam , pounding coastal guns , bridges , a factory area , and oil storage tanks . She sailed north that afternoon , firing at rail lines and railroad tunnels as she made for Tanchon , where she launched a whaleboat in an attempt to spot a train known to run nightly along the coast . Her big guns were trained on two tunnels between which she hoped to catch the train , but in the darkness she could not see the results of her six @-@ gun salvo . 
