## 1771Re: [AtkinBoats] Re: Problem in the Lofting

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• Feb 2, 2008
The gentlman that asked this question had several typos in the dimensions he listed. The example he gave 3.10 3/2+, is really 3-10 3/4 +. The Maiden of Endor offsets are in feet, inches, fraction of an inch down to an eights with the +/- indicator for sixteenths.

----- Original Message ----
From: RF Wellington <dukenali@...>
To: AtkinBoats@yahoogroups.com
Sent: Saturday, February 2, 2008 9:13:17 AM
Subject: [AtkinBoats] Re: Problem in the Lofting

All boat plans that I have ever seen or worked with are dimensioned

in: Feet, Inches, and Eights. That's The Rule !

The last number is ALWAYS in eights of an inch (a 6 would really mean

3/4")

A dimension on the plan such as 8-7-4 would mean the dimension is 8

feet, 7 inches, and 4 eights of an inch long (or 8 feet 7 1/2")

An indication of + after the dimension indicates that the dimension

is 1/16 of an inch longer than indicated. An indication of - after

the dimension indicates that the actual dimension is 1/16 shorter

than indicated.

A dimension on the plan of 8-7-4+ would mean that the actual

dimension is 8 feet, 7 and 9/16 inches long. Conversely a dimension

of 8-7-4- would indicate that the actual dimension is 8 feet, 7 and

7/16 inches long.

I have never seen a boat plan dimensioned in tenths of an inch such

as 3.10 I do not know how much of an addition or a subtration the +

or the - would make in this case.

The builder always has to use a little leeway, common sense, and his

eye. Make everything fair, fit properly, look correct and you should

have a fine craft. The most valuable tool, equipment, or commodity

any boat builder can have at his disposal is experience. That is why

most people recommend that your first building project should be

something small where you can gain both experience and confidence,

such as a dinghy.

I hope this helps.

Duke Wellington

--- In AtkinBoats@yahoogro ups.com, Chris Kottaridis <chriskot@.. .>

wrote:

>

>

> On Thu, 2008-01-31 at 21:38 -0500, Ron Butterfield wrote:

>

> > > with the signal of subtraction (-) for example 2.10Â¹/Â²- or

3.10Â³/Â²+,

>

> the 3/2 seems odd, wouldn't that show up as 3.11 1/2+ ???

>

> Chris Kottaridis (chriskot@.. .)

>

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