So type 3 according to the french wikipédia:
"Très proches des caractéristiques des cuirassés de la classe Iowa (270 m, 212 000 CV, 45 000 tonnes), elles auraient posé de sérieux problèmes, compte tenu des infrastructures existantes, tant pour la construction que pour le radoub." = "Very close to characteristics of the iowa-class battleships (270m, 212 000 shp, 45 000tons), they would have posed serious problems, given the existing infrastructures, both for construction and refit".
https://fr.wikipedia.org/wiki/Classe_Alsace#cite_note-GroupedRef5-22
Unfortunely i have no other informations. Than that wikipédia
But even on the english wikipédia, we notice that type 3 was bigger than other projects.
This should help you understand why i said type 3 in tier 10.