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Old 12-12-2007, 05:41 PM
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buman (Oliver) buman is offline
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Default Waterline Marker Tool from AMANTI

Hello everyone! I have received so much help with my two previous posts that I want to ask something else. Again this is my first wooden kit, The DINGHY, which I decided to paint according to a picture I found on the web. The Dighy in question is White and Blue: I simply love the colors which remind me of the Mediteranean sea and its "Dinghies"...
AFter the Dinghy I will try a bigger ship SO I bought the waterline tool from Amanti AND I decided, why not try this tool on the Dinghy...and this is where I am confused and I am going to try to explain why I am [confused].

When using the tool it draws a STRAIGHT line:
A) I thought hulls were slightly curved... is that OK to draw a straight line?!
B) The hull of my Dinghy is DEFINITIVELY curved! Looking at the picture I found on the web, the waterline mark (painted bottom of the hull) is NOT straight! Instead it follows nicely the curved of the hull. How do you achieved such a result (that is to say marking, drawing such a perfect curve)?!? I know how to draw but here I am not really sure about the result: do you have to be a real artist? How do they do it when it is about REAL ships?
C) What do you think of that Waterline Marker tool from Amanti (I hope it is a useful tool...?)

I apologize in advance if my questions seem rather stupid but you guys have been so much help that I really want to know as I totally fell in love with this Dinghy and I want to pursue this by building other, larger ships! Thank you again.

Oliver

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Old 12-12-2007, 06:24 PM
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Default Re: Waterline Marker Tool from AMANTI

A waterline is the part of the hull where the surface of the water touches the hull in a calm sea and the ship loaded to a specific weight or ballasted to a specific weight.
Since water will not curve (except for the curvature of the earth which is so small it's irrelevant) the line drawn has to be straight.
If you dropped a ball that was 50% buoyant into water the water line would be the circumference of the ball. Half way from pole to pole.
I hope this makes it clear about the water line and why it doesn't follow the ships curve.
Pete

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Old 12-13-2007, 12:22 AM
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Default Re: Waterline Marker Tool from AMANTI

Oliver
In Roth's, "Ship Modeling from Stem to Stern" and Mastini's, "Ship Modeling Simplified" they show similar waterline marking tools as well as how to use them. They also show a bunch of other gadgets that you can make, very helpfull in modeling. You should get copies of those books.
Fred

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Old 12-13-2007, 02:38 AM
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Default Re: Waterline Marker Tool from AMANTI

G'day Oliver, I know what you mean, some people do it to the smaller boats to enhance the look, if you are wanting to do it to your boat the best bet is a good masking tape and apply it by eye, having said that usually the line from the stern to approx 3/4 way along the waterline would be level and then curve up from there, do one side and then eye ball the curve on the second side to match, I know a lot of the Mediteranean fishing boats were double ended and when I was in the navy we saw some really colourful paint jobs, hope this helps John.

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Old 12-13-2007, 05:04 AM
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Default Re: Waterline Marker Tool from AMANTI

I don't think the coloring on the hull of a dinghy or small boat was a waterline as much as it was decoration.

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Old 12-13-2007, 07:26 AM
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Default Re: Waterline Marker Tool from AMANTI

Thank you very much for the explaination about the waterline. I am no longer confused.

I am also ordering a couple of books as advised.

And John I was glad to see that you know what I was talking about. So I am going to give it a try because I love colorful Dinghies and I won't be able to do that with the bigger ships :)

This Forum is really great. You guys are just fantastic. Thank you again for sharing your experience with me.

Oliver

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