#50386, "Number of windows in Chart room and Pilot's room"
This is an extension of the discussion that we had earlier about the windows in Titanic's chart room and pilot's room. In that discussion we determined that the windows which are visible in the bridge area of the wreck are on the bulkhead forming the forward boundary of the fan and vent trunks. The fan trunk is the large duct which the stokehold vent sits atop. The vent trunks are the trunks which are outboard the fan trunk. One aspect of the discussion we did not cover is the number of these windows. In the photo below we can easily identify 3 windows. There has been some speculation that there might be a fourth window in the pilot's room area.
In order to analyze whether this is possible we have to look at the underlying framing of the bulkhead on which the windows are framed. If we look at the next photo we see a photo of Olympic fitting out. We know the width of the bulkhead forward of the trunks is 20 ft. wide. In the photo on the right I have drawn in red where the frames are located. From the number of frames we know that the framing here is on 2 ft. centers.
In the drawing below I have drawn the bulkhead forward of the trunks.
The boundaries in each room of where the windows could be located are the centerline frame inboard and the extent of the fan trunk outboard (blue dashed line). These windows could only be located in the fan trunk because they were glazed so as to admit light from the opening of the stokehold vent above. As can be seen there are only three interframe locations in which windows could be placed in either room. From wreck photos we can see that the inboard window in the chart room abuts the centerline. The outboard window in the chart room abuts the outboard extent of the fan trunk. In the previous photo we saw that the window numbered "3" in the chart room is spaced equidistant from the inboard chart room window. This placement puts it in the the middle interframe space of the three interframe spaces of the pilot's room. For there to be a fourth window which would be within the pilot's room it would have to be placed outside the boundaries of the fan trunk. In that location it would be over the vent trunk where there would be no possibility of light being available for the window. In conclusion, a framing analysis shows that there could only be the three windows on the bulkhead forming the aft bulkhead of the chart room and pilot's room. Two would be within the chart room and one within the pilot's room. Regards, Bob Read TRMA trustee