DEPTHS AND HEIGHTS IN NEW CHART DATUM BSCD2000 (LAS07) Recalculating the depths and heights from the Baltic Sea Chart Datum 2000 (BSCD2000, national realization LAS07) into the Mean Sea Level of the Baltic Height System (BHS77), the charted depth values must be increased by 0.13 metres (+13 cm), while the height values must be reduced by 0.13 metres (-13 cm). MAINTAINED DEPTHS The depths shown for the dredged channels are generally maintained, but silting is liable to occur.