Some presumed it was another such Easter egg, specifically that it could be Russell Crowe's ship from the Fox film Master and ...

But much like the heroic admirals of old, Master Chief re-emerged from the brine and cannoned the big bastard until it exploded. This is a good mod. It even has ropes on the ships you can climb ...

This task will be a difficult one as Aubrey quickly learns in an initial battle with the Acheron that it is a bigger and faster ship than the Surprise, which puts the Surprise at a disadvantage.