I know its months late but if you're talking about the anime with the Yamato-class that was flying? That's Arpeggio of Blue Steel. The one without mechs, with the stripes, was High School Fleet.
for people who are wondering about the mechs at 3:09 i found this ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-1ZEfHDVWBwQ.html ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-OC00MLCemVk.html