Helene Atoll
South of the Pattiw islands, Helene lies in the central Carolines beyond Pulusuk. The latter is a small island at the end of a submerged atoll some fifty-five kilometres long, west of Chuuk. In 1799 Juan Antonio de Ibargoitia sighted Pulusuk from the Spanish vessel Filipino and charted it under the name Bartolomé.