It occurs to me that this may be as good a place as any to introduce a subject that is beginning to concern me.
In recent years, two ways to make new photographs purporting to be from Titanic have emerged: Re-creations of the ship, or parts thereof, and CG rendering. Re-creations of the ship's staircase are now all over the place, and other portions of Titanic are to be found in duplicate, as well; all one needs to do is to visit and photograph them. But something else concerns me much more: Renders have gotten so good that some of them are getting very close to being able to fool me, and I have a quite a bit of experience with photos. One of our members recently posted a very poignant render of something that did not - could not have - happened: Titanic sailing into New York Harbor. It is an absolutely beautiful tribute to Titanic, sort of a way of saying, "I wish this could have been." But - at least at my monitor's resolution - it is SCARY good, so realistic that all it would need is greyscaling to look like an actual 1912 photo. Fortunately, the render's subject matter marks it as fantasy; I don't think there's a way to mis-use this particular render.
But what will be necessary in future, I think, is for future researchers to be extremely wary of new photos popping up. Even after 100 years, it's still entirely possible for a cache of previously undiscovered, genuine Titanic photos to turn up; film of all kinds has a peculiar life of its own ("lost" movies that are 80 to 100 years old are being discovered with fair frequency nowadays). It seems to me that the stage is set for someone to take advantage of that possibility with renders put on film and then somehow convincingly printed or perhaps put on glass negatives, which might be very hard to spot as fakes. I want to be sure that everyone knows - I understand completely that NONE of this is the intent of those who are doing such extraordinary work with CG. But someday, someone with fewer scruples may come along and confound researchers, and I don't think "someday" is far off.