[blam]

"Did you ever do the experiment where you tie a rope tight to some equipment across the aisle from one side of the sub to the other side while on the surface and then dive to some depth? "

No, I never tried that although, I understand it.

[RightWhale]

The commander might not allow such activity during live missions. During the shakeout cruise, though, there are some bored engineers along waiting for their particular equipment cabinet to fail, which, believe it or not happens sometimes and pity the engineer who cannot get it going again right away.