will update as i find more but have spotted parts of the sea were u can't pass etc due to a error on the map. first one 72.14N 132.32E (3208, 802) one tile affected, 66.21S 93.43E (2656,2379) 6 tiles affected, If anyone can update also that would be great thanks
found a spot, rather large one Starting around 153o 32'S by 102o 26'E it stretches about 27 tiles north to south and about 5 or so tiles from east to west Brown tiles on the water seem to be causing the block here is a screenie Click image to enlarge.