I have to revise my information, better my thoughts about this lodging knee
Looking at the book
The Sailing Frigate: A History in Ship Models
by Robert GARDINER
Illustrated from the Collections of the National Maritime Museum
The Sailing Frigate: A History in Ship Models by Robert GARDINER Illustrated from the Collections of the National Maritime Museum Paperback: 128 pages Publisher: Naval Institute Press; Reprint edition (March 15, 2016) Language: English ISBN-10: 184832295X ISBN-13: 978-1848322950 Product...
shipsofscale.com
I found these pages related to "Filling in the Waist"
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and a short description of this model
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and here we can see a similar situation like on your model
And I found the model at the NMM page
View attachment 353622
Warship; Frigate; Amazon class; Fifth rate; 32 guns
Scale 1:32. Built at this slightly larger and unusual scale, the model is a fine example of the Georgian style of modelling, with a fully planked hull and partially planked decks. The hull is constructed 'bread-and-butter’ fashion, of wooden planks glued together horizontally and then shaped externally to fit templates taken from the building plans. The wooden core is then gouged out internally to produce a shell of about an inch thick, over which the planking, deck beams and decoration are applied.
The model has been made to a high standard of workmanship and includes some fittings not always shown, such as the compass binnacle just forward of the wheel, shot racks between the guns, the hammock-netting stanchions and swivel guns on the ship's side.
www.rmg.co.uk
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and the same photo like above in bigger size
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definitely this lodgeing knee is at the same location
and also we can find a gangway, which seems not to connect both sides - it was only the access to the swiffelguns - on the model you can see the brackets
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View attachment 353628
Red - the knee
green - end of gangway
blue - swiffelguns
Means also, that CAF made a very good research for this detail - and I guess, that there is somewhere a contemporary drawing of this frigate class (or maybe this model) showing these details.
I am so sorry with my wrong interpretation and producing some troubles
Sorry