Channell: my understanding is that that is a coupler - the shaft is two piece.
Chuck: I hear you. When constructing this part of the hull I am operating under a set of constraints, defined by (and in order of importance/relevance)
- Floating Drydock plans showing, from a rear view, single-point locations of each shaft. It is a bit ambiguous in the drawing, but it appears the inboards are shown at station 36 while the outboards are shown at station 32 (I can't post this drawing because I don't own the copyright to it).
- Floating Drydock plans showing the side view of the ship. This drawing shows both inboard/outboard shafts for the stbd side. I used it for scaling diameters of various hardware, shaft angle to the horizontal plane, general hull-exit locations, and general spacing of shafts, couplers, and struts.
- various photos.
The most important thing missing here are:
- dimensioned drawings of ANY of this detail, including the struts and the hull exit points.
There are likely more-accurate drawings/data out there, but I don't have them. I use the "measure the photograph" technique as an absolute last resort, and even then only when the perspective view is very close to perpendicular to the object of interest. I DO use photos to gain a relative position of various major objects - in this case the location of the outboard strut with respect to the forward-most point of the inboard flange. Doing this adds another constraint - it positions the strut on the outboard shaft. The position I arrived at also correlates reasonably well (less than a 0.10" difference) with the location of the strut as shown in the FDD side view. Of course, I have ZERO idea as to the accuracy of the FDD drawings.
All of which is a long drawn-out way of saying "Until someone comes up with dimensioned drawings of this area of the hull, I have exhausted my ability to guess."
Tom: interesting that the Haynes model incorporates the flange at the strut-arm-to-hull interface on the outboard shaft, but not the very pronounced one at the shaft interface on the inboard shaft. In fact, looking at the photo at the top of this page, the strut flange appears an entirely different shape: I wonder if these were revised over the lifetime of the ship?