Coast Guard here, and no we didn't go out on deck in bad weather unless we absolutely had to. Besides you ever try and walk around on a wet deck in 30ft seas on a 270ft ship that's taking 30-40 degree rolls and pitching 20-30 degrees?? Believe me it isn't something you want to do. Been there, done that, and have the puke stained shirts to prove it. (not my own puke though, I've never gotten sick underway)
Seriously though, in bad weather you keep everyone inside the skin of the ship. If someone falls overboard the chances of getting them back is marginal at best. Why take the chance?