Can you believe there is 4 of these units
Can they launch all 4 by 2020 or 1 per year
1 in 2017 from JNCX
1 2018 DL
1 2019 JNCX
1 2020 DL
I expect they'll launch both DL 055s at the same time, probably by middle of next year, considering both are being built in the same dry dock at the same pace, meaning both will probably be launched at the literal same time too.
For JN the question is whether they will manage to launch their second 055 at the end of this year or early next year. If they launch the second 055 at the end of this year (and assuming they have a third 055 in the pipeline to be built at the same pace after the second 055 as the second 055 followed the first 055) then I expect they can launch their third 055 sometime in the middle of next year. If they launch the second 055 at the beginning of next year then it's possible they will launch their third 055 3/4 through the way of next year as well.
Either way, I expect at least 3 055s to be launched next year -- two from DL, and at least one from JN (assuming they continue building a third 055 at JN after their second, which I think is a fairly sensible prediction at this stage).
Or putting it another way, I expect at least four 055s to be in the water/launched (including hull 1 launched today) by the end of 2018.