That's the main problem with the Olympic Class in that there are absolutely no photographs of the engine and boiler rooms - apart from one generator room picture and a murky one from Britannic in build. The reciprocating and boiler rooms seem to be non-existent. There are a few other photos of other ships showing catwalks above the boilers and enginerooms that are on the web. I have copies that I'll send with this mail, but the large file with the engineroom drawings in of Olympic is too big for this portal - not sure if they show much, but as a marine engineer I could fill in where all the ladders and platforms would be, but not necessarily where they actually were. Essentially, each deck was supplied with ladders up to platforms that went round the engines so that you could access them for routine watchkeeping. You then took another ladder up to the next level and so on - and there were doors at each of these levels into either the accommodation or crew areas. In the boiler rooms they would be similar to one of the photos of Mauretania I've included with this post - it was a long way up, hot and probably very sooty... If you'd like to send the areas of the workshop and paint store that you want access for, I can give it a go... Won't be authentic though, but who knows otherwise?
Another problem with the ships is the lack of drawings of the marine systems, but this was common when I first went to sea as an engineer in the 60s - we had to crawl under the plates tracing lines and drawing them in our notebooks which every engineer carried. Wish I'd kept them! The Japanese provided copies of all the marine systems in an A3 format which would have been great back in 1912!
