The texts presented here report reflections and preliminary results of the 2009 campaign on the Hellenistic fortress of Failaka, Kuwait, on the fortifications of the first period (north rampart, south gate), on the interior levels of the fortress associated with the first rampart, and present the uncovered artefacts. The French archaeological mission led by O.Callot (CNRS) and J.-F.Salles (CNRS) has been working there from 1985 to 2009. From 2007 to 2009, the work was entrusted to M.Gelin, who developed the research on the fortifications.This is the field report, given to our scientific and supervisory authorities, published by the will of the National Council for Culture, Arts and Letters in Kuwait.