Some people believe that gravity doesn't exist

[Gawdzilla Sama]

Submarines submerge by increasing their mass, not by changing their shape. Just a thought.

[The Grand Nudger]

...shhhh, shh, you're ruining it Sama.. : popcorn :

(sidenote though, any amateur or even pro-ass boatbuilders on these boards? The forum is missing dat thread)

[Succubus]

I think Succubus doesn't want to admit that he was wrong.

My suspicions were correct.

TROLL!

[Anomalocaris]

Submarines submerge by increasing their mass, not by changing their shape. Just a thought.

That’s one way to look at it.

Another way is when the submarine is floating, it’s water displacing shape is the usual cigar shaped cylinder that exclude water from its outside.  When it submerges, it’s water displacing shape becomes a complicated thing in which various parts of the interior of cylinder  transforms into pinched off pockets of the exterior water.

So the submarine changed its water displacing shape, even if not its hydrodynamic shape, when it submerges.

[notimportant1234]

Submarines submerge by increasing their mass, not by changing their shape. Just a 

I never stated that mass isn't a factor here, that is why you work on shape and size , to support more mass. Succubus saied that shape isn't important and has nothing to do with it, that is why I didn't agree with him.

---

I think Succubus doesn't want to admit that he was wrong.

My suspicions were correct.

TROLL!

Why am I a troll ?

[Succubus]

Submarines submerge by increasing their mass, not by changing their shape. Just a thought.

That’s one way to look at it.

Another way is when the submarine is floating, it’s water displacing shape is the usual cigar shaped cylinder that exclude water from its outside.  When it submerges, it’s water displacing shape becomes a complicated thing in which various parts of the interior of cylinder  transforms into pinched off pockets of the exterior water.

So the submarine changed its water displacing shape, even if not its hydrodynamic shape, when it submerges.

No.

[Anomalocaris]

That’s one way to look at it.

Another way is when the submarine is floating, it’s water displacing shape is the usual cigar shaped cylinder that exclude water from its outside.  When it submerges, it’s water displacing shape becomes a complicated thing in which various parts of the interior of cylinder  transforms into pinched off pockets of the exterior water.

So the submarine changed its water displacing shape, even if not its hydrodynamic shape, when it submerges.

No.

Yes.   A submarine submerges by reducing the amount of water it displaces.  It does so by allowing water into parts of its interior, name the ballast tanks, that formerly excluded, thus displaced, water. Thus it now displaces less water.

[The Grand Nudger]

Nah, it increased it's mass.  

A less torturous but still strained idea of a sub changing shape to submerge is when it alters the orientation of it's planes.  If it has enough thrust it can fight it's buoyancy....but it's more efficient to increase mass.

[Gawdzilla Sama]

Submarines submerge by increasing their mass, not by changing their shape. Just a thought.

That’s one way to look at it.

Another way is when the submarine is floating, it’s water displacing shape is the usual cigar shaped cylinder that exclude water from its outside.  When it submerges, it’s water displacing shape becomes a complicated thing in which various parts of the interior of cylinder  transforms into pinched off pockets of the exterior water.

So the submarine changed its water displacing shape, even if not its hydrodynamic shape, when it submerges.

Not really, because the buoyancy tanks are closed off from the outside. The water in the tanks is the same as the equipment or the crew when it comes to buoyancy.

[The Grand Nudger]

Tossing my kids overboard does nothing to the shape of my hull.....but it does help me ride a little higher and get over the stumps. 

(an engineers description for passengers on a ship - variable ballast)