[PSUBS-MAILIST] more or less or equal ?!?!

[AndrePevestorf@aol.com]

Hi folks,

looking into my older e-mails I found an interesting point:

What about the difference in necessary power to move a 1atm sub or an ambivalent dry or an wet sub ? (all of the same outer skin volume)

Are there any differences ??!?!

For the first I thought thatīs easy:  same volume means same displacement and that means same equivalent mass to move ... ( it proceeds from the assumption that the wet sub is nearly closed and the water is trapped in it...)

but is it really true ???

The more I think about it the less Iīm sure.... itīs the typical situation if you think to long abaut a matter of fact... .-))

A.