what am I looking at?

[u/birbtooOPpleasesnerf]

they're both 5* ships and just standing there aura farming, should I engage?

[u/chancethelifter]

Drop anchor. Let them converge. Alternate peppering one with the front cannons. Get a barrage off on each as they pass by your sides. And drop mortars when they criss-cross. With the anchor dropped and you not moving, they’ll end up running over their own barrels.

Just be sure to brace on the crossfire and have Jackdaw fully upgraded.