It took me a while, but I found that old "normal" Cometine cruiser design I did more than a decade ago. I find it lacking compared to the one shown in this episode. I will have to make a new one entirely. Plus I can make it match more against the newer redesigned Gamilas ships I did for the Battle of Pluto 2199.
I am also curious as to what the news reel Shima is watching is saying. I could figure out parts of it, but I get the feeling there is something else there I missed. Especially as Shima was leaving.
EDIT:
In a shadow update, we find that Dommel's flagship is
730 meters long! (2,395 feet long)
Also it has 7 quad 490mm (19.29") cannon turrets (and 4 triple 330mm (13") turrets).
http://yamato2199.net/mecha/gamirasu_sn07.html
The Dimentional Submarine is 144 meters long (over 472 feet long).
http://yamato2199.net/mecha/gamirasu_sn08.html