Uriel enjoyed life on the zeppelin during the rest of the trip. Lavish food, nice clothes and people who treated him nicely, in short, it was heaven, but as much as he enjoyed getting spoiled he was so excited about the expedition he couldn't wait to land.
If this was the old times, the zeppelin would have been able to fly over the ocean and arrive at their destination in a couple hours, but flying over the sea carelessly was too dangerous because of the unknown dangers that may be lurking under the dark waters. Instead of flying over the short distance they had to make a detour and fly only over land as it was easy to spot any possible threats at a distance.