What does this line represent?

[allanyed]

The below drawing happens to be the Artois, but it is similar to many others.  Is there a name for the line marked below.  I have traced it in magenta on the profile plan to see if I could figure it out, but it does not seem to hold any significance.   I am sure it has significance as lines were not arbitrarily drawn on these plans so I am curious to know what it is about.  The deck line can be seen in red on the original plan so it is not the deck. 

TIA

 

Allan

 

Line question AAA.PDF

[druxey]

I can't tell which line you are referring to, Allan. Can you add an arrow or something, please?

[Pirate adam]

Allan,

 

I am not an expert in this area, but I have encountered the same line on my Crocodile draft.  I have interpreted it as the top of the moulding that is even with the bottom of the midship rail. Once the moulding diverges from the rail at the waist it continues aft to the quarter galleries and forward to a point above the stem.  I'm not sure if that moulding is called the "drift rail?"

 

Adam

[Jaager]

Given that there is not all of the interior drawn in red,  that the line shows no reference to the outside rails and mouldings, that it is all on the same level, and that it is at the correct distance above the gunports -  I believe  that it is the underside of the deck at the side.

 

[iMustBeCrazy]

1 hour ago, Jaager said:

I believe  that it is the underside of the deck at the side.

BINGO!

 

I knew that....once.

 

[allanyed]

Sorry guys it is not the deck.  The deck line (top and bottom of the planking) is shown in red on the original draft.  I will zoom in further to see if it helps.  Will mark the line in question with arrows Druxey, good point.

Thanks

Allan

 

Line question BBB.PDF

[Craigie65]

Don’t know if this helps, but in the AOTS for Diana this is labelled as the sheer line 

[allanyed]

Assuming you are correct Craig, and I think you are, I cannot believe how stupid of me not to just take the line all the way through to see such a basic thing by myself.  

Allan

 

[druxey]

That is the  sheer line, as opposed to the toptimber line.

[Jaager]

My first given was incorrect.  There are red lines.  I missed that.

Struck out!

Drift:

I can't think of any use that I would have for the shear line?

 

 

Edited November 18, 2023 by Jaager

[iMustBeCrazy]

6 hours ago, allanyed said:

I cannot believe how stupid of me not to just take the line all the way through to see such a basic thing by myself.

How do you think I feel? I worked this out months ago and then forgot