Offshore Mooring Pile Design for Recovery of the Ehime Maru

摘要

Recent recovery of the sunken fishing vessel Ehime Maru;;wasperformed near Honolulu using a shallow staging area in a protectedreef environment. Project restrictions prevented a geotechnicalsubsurface exploration and allowed only two mooring piles;;promptingcontingency pile design using empirical calculations for a range ofpossible conditions. Design assumptions and acceptance criteria weremodified during pile installation using hammer resistance observationsas the primary indicator of geotechnical conditions.