There is a MOORE who was on board and became missing during a 1915 shipwreck of the Arabic as it was bound for New York. The ship was torpedoed by the Germans. The account and American casualty list is listed in the GenealogyBuff.com Library of Files at http://www.genealogybuff.com/misc/misc-arabic-shipwreck.htm
Other MOORE data can be researched at http://www.genealogybuff.com/data.htm#Moore
Hope that helps.