Ouch.
I think the idea behind coastal defense ships like these is that if they were ever attacked by proper sailors, the attackers would either die laughing or be repelled by the brutal ugliness of these ships, they have none of the gracefulness of ocean going vessels.
There seems to have been an early 20th c. European competition to see which country could make the most unaesthetic ship (of course it must be remembered that the purpose of these ships was not aesthetic.)
Another brutalist looking ship:
Los barcos de papel: Monitor Faa di Bruno (1917)
or
https://sklep.gpm.pl/pub/thumbs/8dc/...-1900-1200.jpg
ps.
If you cannot salvage the hull by adding a layer of gesso and reshaping the hull with a rasp or files, then don't add the hull and finish your model as a water-line display on a nice base. It is like Julia Child dropping the turkey, there is no mistake if you don't tell anyone and the end result still looks good.