Bones, that is a positively SCANDALOUS first image for an update! That picture is at least a few HOURS old!
But yes, as you could all clearly tell, that picture is from the early stages of my work building a top view of the ship's steering engines:
Here's what the top view looks like now:
For those who might have thought that Bones' picture might have been depicting something else, you might be wondering, "Steering engine? What's that?" To which I respond, "It's an engine, kind of like a scaled down version of the main engines that help move the ship, but whose sole task is to turn the rudder." You might retort, "Why do they need an engine? Why don't they just use hydraulics like airplanes use to turn
their rudders?" To this, I reply, "Titanic's rudder weighed 101¼ tons. You're going to need a lot more than just hydraulics attached to a wheel to move that thing."
There are actually two engines here: only one would ever be hooked up to the rudder at a time, while the other stands by as a backup in case the other one fails. Yay, fail-safes!