Cap'n Walnut, I had always heard the term "herringbone" as well.

As far as staterooms, there are/were none on the main deck. There is a large deck room aft of the boilers, which are set down in the hold. I can only hope that the docents there have gotten their facts straight, because when we were there 3 or 4 years ago, they were telling some real whoppers about various things. I realize they rely on volunteer help, but unfortunately, when inaccuracies are told many times over, they tend to become regarded as fact.