An amphibian that sank?

Morgans wrote:

"Roy Smith" wrote

One of the fundamental truths of boat design is that the center of gravity
has to be lower than the center of bouyancy. If it's not, then eventually
the boat (helicopter, whatever) will figure out how to turn itself over so
that it is.

Not completely true, but right to a degree.

In the case of a heli or plane on floats, the center
of gravity is way higher than the center of buoyancy,
and everything continues to work out OK.

In that case the center of gravity is between the
outer points of buoyancy. Like this:

GGG

BB BB

Then if it gets a little sideways, and the gravity
is on the outside of buoyancy, things will re-adjust.

GGG BB

BB

Ker-splash! Soon it is stable again, but
in a bad (g) way:

BB BB

GGG
--
Jim in NC

Uh, Houston, we are in Stable -two.

Peter Dohm wrote:

"Roy Smith" wrote in message
...
"Peter Dohm" wrote:
Some of the small sail boats also have foam filled compartments with the
same effect. The name MacGreggor comes to mind from years ago, and
there
are probably others by now.

Barf. Never use "MacGregor" and "sailboat" in the same sentence. They
are
the most butt-ugly things in the universe.

They actually did have a replica of a 19th century pilot boat that I thought
was sort of neat, if less than practical, and commercially it was a dismal
failure. But I really don't like most of their competitors boats very much
either.

Peter

That must have been the 23 foot. Cute little ship.
Right down to the bow sprit.

I've been looking at a Catalina Capri 18.
Can't decide if it's too big, or too small, or just right...


Richard

Prior to flying the "Spruce Goose", Howard Hughes filled the belly with
beach balls. He was concerned about sinking.

Although he took most of the balls out after the flight (maybe he returned
them and got his money back), there were many left in all the hard to get
places. Prior to being refurbished in McMinnville, OR, I saw a number of
them still down in the tight spots.

Colin

"Richard Lamb" wrote

Uh, Houston, we are in Stable -two.

Blurb - Blurble - glug-glug-glug!
:-))
--
Jim in NC

"Richard Lamb" wrote

I've been looking at a Catalina Capri 18.
Can't decide if it's too big, or too small, or just right...

For sailing on what water, and what kind of trips?
--
(Captain) Jim in NC g

Morgans wrote:
"Richard Lamb" wrote

I've been looking at a Catalina Capri 18.
Can't decide if it's too big, or too small, or just right...

For sailing on what water, and what kind of trips?
--
(Captain) Jim in NC g

Young man... Don't you have school tomorrow? g ducking for cover...

Thw Monk

"Flyingmonk" wrote in message
ups.com...
I saw a head-on picture of a carrier and boy did it look top heavy...

The point of no return on a carrier is about 15 degrees, if I remember
correctly... For one of the Spruance class destroyers, it's around 60
degrees... At full speed, a ship should be able to apply full rudder
deflection and not go past the point of no return... I knew a guy once who
said that he was on a DD that was pulling 55 degrees as it made it back to
Norfolk -- light fuel load, storm off the coast, etc... You basically have
to strap yourself to your rack to sleep...

"Flyingmonk" wrote

Young man... Don't you have school tomorrow? g ducking for cover...

BITE ME ! ! ! g

Don't remind me!
--
Jim in NC

The aircraft could have been deliberately sunk for training. Or, it
might have hit debris in the water or a submerged object and received a
whole punched through the fuselage. Lastly, water pumps might have
failed causing it to sink gradually between pilot visits.

Of course, Captain Zoom is known to operate a U-Boat in the vicinity of
the EAA seaplane harbor in Wisconsin. Not that he torpedoed it or
anything. It probably smacked him in the periscope upon landing.

You know, the thing he looks down his nose at to watch USENET from in
the submarine's Conman tower...

Morgans wrote:

"Richard Lamb" wrote

Uh, Houston, we are in Stable -two.

Blurb - Blurble - glug-glug-glug!
:-))
--
Jim in NC

Apollo...

Stable 1 was flat on yer back.

Stable 2 is hanging nose down from the straps.