I just checked the wording attached to the contemporary drawing of the captured Tigre at the NMM
Scale: 1:48. Plan showing the body plan with stern board outline, sheer lines with inboard detail, and longitudinal half-breadth for 'Tigre' (1795), a captured French Third Rate, as taken off at Portsmouth Dockyard
prior to being fitted as 74-gun Third Rate, two-decker.
Later alterations sent to Portsmouth on 24 August 1797. Signed by Edward Tippet [Master Shipwright, Portsmouth Dockyard, 1793-1799].
collections.rmg.co.uk
prior to being fitted
and
Later alterations
I interprete these information in such a way, that all the green lines are describing the changes they made in the shipyard after the capture,
means, that the french Tigre had these windows and gunports
and the british decided to change this part, f.e they closed the windows and opened gunports
The green one looks lika a window as well. Combines with the internal arrangement of a 74er.
I gues, that it was already a gunport and no window
Based on my interpretation your 3D-design
is showing the french Tigre