Follow
The Titanic H&G team have released what I believe is their final demo before Steam release of 'Project 401', which is their walkable Titanic model. It's in Unreal 4 and really is quite fantastic - now 50% of the vessel is modeled.
https://www.youtube.com/watch?v=TOogM9SagAY&t=961s
The Britannic is less famous, but equally sunk.
The eventual goal is a plate-and-frame virtual rebuild of the *entire* vessel.
https://youtu.be/zuxiwHtQViQ
Ages ago I did a walkaround of the same Studio's Britannic model, handy if you are having trouble sleeping..
(Corrected URL because I computer gud)
https://youtu.be/9ke8AKNiwbM