just did an "old shool" night surface attack, after getting clother to the burning wreck, crying survivors mixed together with moderate/heavy sea and sound of the burning wreck... hard to spot a liveboat in this conditions but their silhouettes became slowly visible infront of the fire while slowly heading in that direction where they shout from.
all this togehter with its fine sounds is a real immersion boost, escpecially if more than 1 lifeboat is in range