Petersburg .... Riga Sumburgb Head 761,2 Aberdeen 760,7 Yarmouth 755 , a Valentia .... 757,9 Gris-Nez [ 757 , 8 754 , 7756 , 5755 , 2755.2758.3757 , i755 , s756.8738.3755.3759.5757 , i757.8757.1756.9756.2756 , 9757 , 8756.3756.0757.3758.6740.0752.1747.7 756 , 5755 , 2755.2758.3757,