Fascinating!
Maybe it was raining when everybody disappeared off the fore deck?
Here is another interesting Panama site - a web cam on the locks - not as fast and furious as the You Tube video, but still quite interesting.
Have a look at http://www.pancanal.com/eng/photo/camera-java.html
This one is also facinating seeing the different types/sizes of the ships passing through (not to mention the odd yacht /forums/images/graemlins/cool.gif)
Panama's a couple degrees North of the Equator - the rain is hot. I'd guess it would be the rain and maybe the radar that cleared the foc'sle - it is a tropical rain forest after all, and the rain is quite heavy, thankfully as it's needed to replenish Lake Gatun - no pumps needed.
We spent 3 hrs watching the lock web cam at each end to see our daughters boat go through ..entry by appointment..and they went through 1 hour early each time! VERY boring! /forums/images/graemlins/crazy.gif
The foredeck clears i suspect because the mid part is gatun lake which is pretty boring and it also coincides with lunch. The trransit gets interesting again when you get to Gillards cut through the continental devide (where the andes change to the rockies).
There would also be a ranger on board to give a running commentary and they stop for lunch too during the lake passage!!
Rgds
Bob