Saldanha Bay ore jetty: a study of berthing impacts

Abstract

Between December 1982 and January 1984 the berthing impacts o~ 50 ore carriers were monitored at the Saldanha Bay ore-jetty. The actual displacement o~ the monitored vessels ranged between 60 and 263 kilotonnes. Only 507. o~ the monitoring runs yielded complete sets o~ data. Approach velocities recorded were high and the design limits were exceeded several times resulting in ~enders being de~lated on ~our occasions. The added mass coe~~icient ~or each impact was calculated. The actual values o~ C" varied between 1 and 7. This agrees with values ~ound in literature. Some o~ the\high values could be attributed to inaccuracies in the measurement techniques. From the values obtained ~or added mass it seems that the value used in the design was very low and that a unitary value ~or CH is not very satisfactory.