Wow, now we are making some progress - at least with the traditional space technology that we publicly have!! Vertical ground surface vertical landings recently, and now even the same out on the water. This is a very brief video which shows that "vertical landing on the water" event.
(http://s22.postimg.org/fcvmot5i9/Screen_Shot_2016_04_10_at_9_27_52_PM.jpg)
(click on the "Watch on YouTube button" on the video tool bar...........to watch the video!) :) ??
http://www.youtube.com/watch?v=Z587WYqUDZI