[bolger] Re: AS29/AS38 Displacement
>I find it interesting that the respondants all converted to cubicNo. The first step is to convert from unfamiliar units to
>feet first. Wouldn't it be easier this way?
familiar ones.
hal
In a message dated 05/10/2001 9:<BR58:<BR00 AM
Eastern Daylight ,pvanderw@...writes:
always referred to human rather than "natural" units. Me, I still work in
cubits, as God intended :-)
Cheers/Don
whose offset tables are a bit strange looking
Eastern Daylight ,pvanderw@...writes:
> The point I was making is that the metric system was designed aroundPeter, no offense was meant. You are aware, I suppose, that boatbuilding has
> natural units,
always referred to human rather than "natural" units. Me, I still work in
cubits, as God intended :-)
Cheers/Don
whose offset tables are a bit strange looking
Different strokes, Peter. What I find interesting is that you got 10858,
while I got 10545 (with seawater) that is a solid three percent difference.
I will point out that David got 10568 which tends to agree with my figures.
Perhaps we chose the method we did, because we knew it was more accurate ;-)
Chuck
I find it interesting that the respondants all converted to cubic
feet first. Wouldn't it be easier this way?
4.81 cu. meters = 4810 liters = 4810 kilograms = 4810 * 2.2046 lb/kg
= 10604 lbs (fresh water) * 64/62.5 = 10858 (sea water).
Peter
while I got 10545 (with seawater) that is a solid three percent difference.
I will point out that David got 10568 which tends to agree with my figures.
Perhaps we chose the method we did, because we knew it was more accurate ;-)
Chuck
I find it interesting that the respondants all converted to cubic
feet first. Wouldn't it be easier this way?
4.81 cu. meters = 4810 liters = 4810 kilograms = 4810 * 2.2046 lb/kg
= 10604 lbs (fresh water) * 64/62.5 = 10858 (sea water).
Peter
> What's easier is what you're used to. The calculations require thesame number of steps either way. Of course, using "human scale" units
rather than "abstractly derived" ones is easier for humans; maybe
less easy for computers
The point I was making is that the metric system was designed around
natural units, including the properties of water, so the conversion
from cubic meters to kilograms only involves moving the decimal
point, which is surely easier than multiplying by 39+ inches. Not a
big deal, just a comment.
Peter
In a message dated 05/10/2001 8:<BR50:<BR34 AM
Eastern Daylight ,pvanderw@...writes:> I find it interesting
that the respondants all converted to cubic
What's easier is what you're used to. The calculations require the same
number of steps either way. Of course, using "human scale" units rather than
"abstractly derived" ones is easier for humans; maybe less easy for computers
:-)
Cheers/Don
Eastern Daylight ,pvanderw@...writes:> I find it interesting
that the respondants all converted to cubic
> feet first. Wouldn't it be easier this way?Peter,
What's easier is what you're used to. The calculations require the same
number of steps either way. Of course, using "human scale" units rather than
"abstractly derived" ones is easier for humans; maybe less easy for computers
:-)
Cheers/Don
> As one meter ~ 3.25 feet, one cubic meter ~ 3.25 x 3.25 x 3.25 =34.33
> cubic feet. 34.33 cu. ft./ cu. meter x 4.81 cu. meters = 165.12 cu.cu.
> ft. Now, one cubic foot of seawater (?) weighs 64 lbs., so 64 lbs/
> ft. x 165.12 cubic feet = 10,568 lbs. displacement.I find it interesting that the respondants all converted to cubic
feet first. Wouldn't it be easier this way?
4.81 cu. meters = 4810 liters = 4810 kilograms = 4810 * 2.2046 lb/kg
= 10604 lbs (fresh water) * 64/62.5 = 10858 (sea water).
Peter
Paul,
Not having proper conversion charts in front of me, I will nontheless
take an ambitious but probably fallicious stab at figuring the
displacement of the AS-39/Loose Moose II.
As one meter ~ 3.25 feet, one cubic meter ~ 3.25 x 3.25 x 3.25 = 34.33
cubic feet. 34.33 cu. ft./ cu. meter x 4.81 cu. meters = 165.12 cu.
ft. Now, one cubic foot of seawater (?) weighs 64 lbs., so 64 lbs/ cu.
ft. x 165.12 cubic feet = 10,568 lbs. displacement. All figures are
rounded, and kinda rough, so I would say between 10,000 and 11,000
lbs.
The hull allows about 1000 lbs. per inch of immersion, and the
transoms are at least 9" above the DWL, so the boat could be
shamelessly overloaded without considerable ill effect. However, it
would be a bit too heavy to tow behind a Honda Civic, I thinks,
porky
Not having proper conversion charts in front of me, I will nontheless
take an ambitious but probably fallicious stab at figuring the
displacement of the AS-39/Loose Moose II.
As one meter ~ 3.25 feet, one cubic meter ~ 3.25 x 3.25 x 3.25 = 34.33
cubic feet. 34.33 cu. ft./ cu. meter x 4.81 cu. meters = 165.12 cu.
ft. Now, one cubic foot of seawater (?) weighs 64 lbs., so 64 lbs/ cu.
ft. x 165.12 cubic feet = 10,568 lbs. displacement. All figures are
rounded, and kinda rough, so I would say between 10,000 and 11,000
lbs.
The hull allows about 1000 lbs. per inch of immersion, and the
transoms are at least 9" above the DWL, so the boat could be
shamelessly overloaded without considerable ill effect. However, it
would be a bit too heavy to tow behind a Honda Civic, I thinks,
porky
--- In bolger@y..., paull01@y... wrote:
> Hi folks.
>
> Does anyone know what the displacement of the AS38 is? Phil lists
the
> displacement at 4.81 meters(cubed) in his book 'Boats With An Open
> Mind'. Can anyone help me with the conversion to pounds? I see that
> Susan and Barry have listed their AS29's displacement at 7000
pounds.
>
> Paul L
4.8*39^3/12^3*62 = about 10K
Did I get that right?
Chuck
Hi folks.
Does anyone know what the displacement of the AS38 is? Phil lists the
displacement at 4.81 meters(cubed) in his book 'Boats With An Open
Mind'. Can anyone help me with the conversion to pounds? I see that
Susan and Barry have listed their AS29's displacement at 7000 pounds.
Paul L
Did I get that right?
Chuck
Hi folks.
Does anyone know what the displacement of the AS38 is? Phil lists the
displacement at 4.81 meters(cubed) in his book 'Boats With An Open
Mind'. Can anyone help me with the conversion to pounds? I see that
Susan and Barry have listed their AS29's displacement at 7000 pounds.
Paul L
Hi folks.
Does anyone know what the displacement of the AS38 is? Phil lists the
displacement at 4.81 meters(cubed) in his book 'Boats With An Open
Mind'. Can anyone help me with the conversion to pounds? I see that
Susan and Barry have listed their AS29's displacement at 7000 pounds.
Paul L
Does anyone know what the displacement of the AS38 is? Phil lists the
displacement at 4.81 meters(cubed) in his book 'Boats With An Open
Mind'. Can anyone help me with the conversion to pounds? I see that
Susan and Barry have listed their AS29's displacement at 7000 pounds.
Paul L