The following was picked up from a web site dealing with Christmas Island and its history. Apparently a Norwegian ship was torpedoed there during WWII. I expect most site vistors will know about it already, as follows:-

The island was occupied by the Japanese between 1942-1945. A Japanese submarine torpedoed a Norwegian freighter, the Eisevold, that was loading phosphate in Flying Fish Cove, which later sank. Japanese aircraft made numerous bombing raids on Christmas island and with most of the women & children evacuated, the threat of invasion grew real. On 31st March 1942, a Japanese Fleet bombarded the Cove shore line and more than 900 troops came ashore. With the remaining Europeans imprisoned, the Japanese spent the first few weeks searching for the 1000 Malays and Chinese who had fled to the jungle. Most returned and were forced to work. Japanese attempts to profit from the mine were thwarted by acts of sabotage by the islanders and by Allied submarine attacks. By 1943 the Japanese were unable to maintain the island's food supplies, but solved this crisis by sending half the island's population to prison camps in Indonesia.