Passage: On one occasion he was blown clear across the Baltic to Finland. His longest trip was due east from Gothenburg, across the breadth of Sweden and out over the Baltic to Gotland. Even though he saw a lighthouse and heard breakers off Öland, he remained convinced that he was traveling over land and seeing lakes.During a couple of Svea flights, Andrée tested and tried out the drag-rope steering technique which he had developed and wanted to use on his projected North Pole expedition. Drag ropes, which hang from the balloon basket and drag part of their length on the ground, are designed to counteract the tendency of lighter-than-air craft to travel at the same speed as the wind, a situation that makes steering by sails impossible. The friction of the ropes was intended to slow the balloon to the point where the sails would have an effect (beyond that of making the balloon rotate on its axis). Andrée reported, and presumably believed, that with drag rope/sails steering he had succeeded in deviating about ten degrees either way from the wind direction.

Question: What was Andree's longest trip?
due east from Gothenburg, across the breadth of Sweden and out over the Baltic to Gotland