So there's it is folks, the 3 ships we see in this photo (Left-to Right) are HMS Revenge (1892), Frank Beken's boat and either HMS Powerful (1895) OR HMS Terrible (1895).Lost a bunch of text I had typed out but in a nut shell I can see that. Most nations have a reserve fleet that they keep sitting in mothballs till the time is needed in case of war. Most of the time these ships sit till they are out dated to a point that they are just simply sold for scrap.
Thing is there is not much information on the Powerful class of cruisers on Wikipedia which you also have to take with a grain of salt in some cases. But I am confident that the Powerful class of ship is what we see in the photo above with Titanic. Not only does she have the same birdbath platform layout but she also sports a level main deck bow to stern as well as the amidship vents. I am happy with saying that the ship is a Powerful class. Now the question is which one is it. We have a 50/50 shot of being right. I want to say its the HMS Powerful but if its true that both ships were laid up after 1904 then now who knows which one it could be.
I would have to do some more digging but I think I want to lean towards it being the HMS Powerful.