Ship damage question

[Baxter]

Forgive the dumb question but I have not played this for a long time. As I understand the rules, the damage boxes on the ship mat are always filled according to the ships burden. If it is 3 then the first box will be filled when damage chits equal 3 or more and that will always continue until all boxes with numbers in them are filled and the ship is disabled or sunk. I was wondering .... instead of sticking with the same burden, should it not take less damage points to fill the boxes as the ship gets progressively knocked about?

(I was thinking of the plus one damage rule from Wings of Glory)