This is the last step in the campaign, I was pretty reluctant to fight here since I had too many high level captains that I could lose.The only reason I won there is because of the small islands cluster were we fought which forced the enemy to split up.
I actually replayed this part after because I lost the brigantine captain that you saw in the cutscene, someone intercepted him and he was level 50 almost.
After I finished the campaign I decided to postpone and only do an overview of the game as soon as the next qol patch drops if it ever will xD already almost 2 weeks since the last one.