Petersburg Riga Dunrossness ... Aberdeen Varmouth 1763,3 Valentia 768,8 752.8753.2755.2756.x756 , 4756.4756.9758.3759 , c762.5754 , 2755.6757 , 8755.7758.7758 , g761 , i761.1760.8761.8760.7760.2761.4765.7756.7 753.2755.2756.x756 , 4756.4756.9758.3759 , c762.5754 , 2755.6757 , 8755.7758.7758 , g761 , i761.1760.8761.8760.7760.2761.4765.7756.7 755.2756.x756 , 4756.4756.9758.3759 , c762.5754 , 2755.6757,