Recent Posts

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TYPE VII / Re: Stern structure outside pressure hull
« Last post by bianco64squalo on 22 Jan , 2018, 12:15 »
Thanks Snowman for your patience, and thanks David for sharing new and useful drawings...
I’m waiting to receive the plans I ordered in Germany....
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TYPE VII / Re: Stern structure outside pressure hull
« Last post by David83 on 22 Jan , 2018, 10:46 »
close ups

br David
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TYPE VII / Re: VIIC/41 - Schematices drawing
« Last post by NZSnowman on 22 Jan , 2018, 10:44 »
Last week Don, pick up a mistake on my drawing. I had the vent for the MB3 opening upward (fig. 2) it should open downward. I have included the new drawing below (fig. 1).


Fig. 1. New MB3 vents drawings.


Fig. 2. Old MB3 vents drawings.

These images has been resized. Click to view original image.
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TYPE VII / Re: Stern structure outside pressure hull
« Last post by David83 on 22 Jan , 2018, 10:42 »
yes i hope i can help you in some things would be great to be a part of you fantastic 3D projekt NZ.

br David
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TYPE VII / Re: Stern structure outside pressure hull
« Last post by NZSnowman on 22 Jan , 2018, 10:35 »
Dear Fillipo

Thats from Kagero 3D Booklet maybe it helps .

br David

David, great drawing!

It clearly show all the tanks and venting.

This summer in NZ I been working on the Saddle Tanks and is drawing clearly show all the key things with them  :)
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TYPE VII / Re: Stern structure outside pressure hull
« Last post by NZSnowman on 22 Jan , 2018, 10:31 »
Thanks Snowman,
but there is a thing that I don't understand: if you look at the posted drawing, it seems that MBT 1 ( colored in green ) was large the whole hull, and not only between the two yellow lines of previous post: is this drawing wrong ?
And furthermore, is in your opinion the aft buoyancy tank ( colored in pink in the posted drawing ) correct in shape ?
Thanks in advance for replies....

The area for the MBT 1 looks Ok to me. The drawing is only of a single section of the boat.

The Aft buoyancy tank don't not look right to, I believe it should go to the top of the deck as it need to be able to vent.

You have to remember that all the tanks need a way to vent the air and water at the top and most are open directly to the sea at the bottom.
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TYPE VII / Re: Stern structure outside pressure hull
« Last post by David83 on 22 Jan , 2018, 10:07 »
Dear Fillipo

Thats from Kagero 3D Booklet maybe it helps .

br David
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TYPE VII / Re: Stern structure outside pressure hull
« Last post by bianco64squalo on 22 Jan , 2018, 02:24 »
Thanks Snowman,
but there is a thing that I don't understand: if you look at the posted drawing, it seems that MBT 1 ( colored in green ) was large the whole hull, and not only between the two yellow lines of previous post: is this drawing wrong ?
And furthermore, is in your opinion the aft buoyancy tank ( colored in pink in the posted drawing ) correct in shape ?
Thanks in advance for replies....
9
TYPE VII / Re: Stern structure outside pressure hull
« Last post by NZSnowman on 21 Jan , 2018, 10:43 »

The two yellow lines 'B' are the side wall of the tank. The stringers are marked in pink.



You can see the two stringer on the casting. The yellow box highlight the orange line in Q1 page 1

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TYPE VII / Re: Stern structure outside pressure hull
« Last post by bianco64squalo on 21 Jan , 2018, 03:46 »
Hi David,
I completely agree with you; I only was perplexed because of Snowman’s answer at my B question of figure n. 2; he stated that those two lines on drawing were not the stringers....
I have the greatest respect for his authority, but in this case I’m very doubtful....
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