In 1102, al-Afdal sent a combined land and naval expedition under his son, Sharaf al-Ma'ali, to invade Palestine. The Fatimids scored a major victory at the Battle of Ramla over King Baldwin I of Jerusalem, but their indecisiveness as to their next actions robbed them of a unique opportunity to make major territorial gains. Sharaf al-Ma'ali repulsed an attack of the Crusader fleet on Ascalon, but returned to Egypt without achieving anything else. In spring 1103, twelve ships from Tyre and Sidon managed to break through the Crusader siege of Acre, while in the summer a fleet from Egypt blockaded Jaffa. Once again, however, the co-operation between fleet and army broke down; after waiting for twenty days off Jaffa, and repeated requests to Ascalon for assistance went unanswered, the Fatimid admiral Ibn Qadus retreated.