Thanks to Kos.
I just noticed that Boner and Yertle are standing on the fantail which is about the only place I remember on ships where you could smoke. Heh. Also the last place to go under if you nose 'er in at flank speed* like the GOP is doing.
*"Flank speed is very fuel-inefficient and often unsustainable because of engine overheating issues."
I do not think 'engine overheating' is going to be much of a problem in a few minutes when she's fully submerged.