gCaptain is reporting that, since 2012, the Irish Naval Service has been experimenting with using kite sails to give their ships a fuel saving boost and to hoist aloft surveillance equipment up to 300 meters (1000 feet) into the air. They now consider the technology mature enough to be commercialized.
Putting sensors at 1000 feet gives a horizon distance of 38.7 miles compared with 8.7 miles for a more typical height of 50 feet.
The Irish Naval Service, their missions, and their ships look more like the US Coast Guard than the US Navy. This technology might have applications for the Coast Guard. Perhaps it is worth a look by the Research and Development Center.
It looks like the Navy may be working on something that looks similar, TALONS, but is only intended to hoist sensors, not improve fuel economy.