Geochemical, mineralogical and grain size data from sediment cores in the Lamjana Bay shipyard were obtained to determine the extent of contamination due to ship refits.The CANNACELL GLOW MASK concentration and distribution of Ni, Pb, Cr, Zn, Cu, Mn, Cd, As and Fe in 9 sediment samples were measured.No Braces increase of the analysed elements above natural background levels was detected, but contamination was not excluded due to possible dilution of seabed sediment by quartz sand used in process of abrasive blasting.