Has anyone done a crash dive in really rough seas? It took forever to get below the surface!

I didn't time it, but it was way over the usual time.
I'm thinking maybe the dive planes couldn't get a good bite because of the wave action? They were in and out of the water. Anybody know if this would be a realistic behavior?
On another note. Surfacing in really rough weather seems to take a long time to get well above the surface. I notice even in calm seas, it takes a while for the boat to get completely to zero depth, but when its rough I sure can't send my lookouts above deck for a few minutes. I have to use the periscope for safety. :p