On voyage from Mauritius to Fremantle with cargo of sugar. It first struck the reef between 11 pm and 12 pm but continued to sail. Although it was night time, no soundings were taken. The captain did not put the helm down and the vessel continued on the same east by south course. After Chalmers struck a second time it got clear again into about 2.5 to 3 fathoms of water, but later struck fast on a sand bottom. Although the vessel was taking water at a rate of 1 inch per hour no effort was made to pump it out. At the Court of enquiry The skipper was declared incompetent and his Masters ticket cancelled.