 Complete the following phrase:  Express and Electra were half of the escorts for Prince of Wales and Repulse as they sailed north on 9 December, but could do little as the Japanese bombers sank the two capital ships other than help to rescue the 3,000-odd survivors. Upon their return to Singapore, they joined Encounter and the other destroyers there escorting ships between Singapore and the Sunda Strait. Electra and Encounter escorted the heavy cruiser during the Battle of the Java Sea on 27 February 1942. The former ship was sunk by a Japanese destroyer as she covered Exeters withdrawal. Several days later, Encounter and the American destroyer were escorting the damaged Exeter en route to Ceylon when they encountered four Japanese heavy cruisers and their escorts. Encounter and Exeter were sunk in the 