I have a level 18 and two level 16 Captains for Dunkerque , the best builds are 1 st BoS EM SI AFT MAA BFT Vigilance or HighAlert . 2 nd BoS EM SI AFT MAA Demo Expert . But only if you really fancy setting fire . Meh . 3 rd BoS EM SI AFT Camo Expert BFT . Still get a crappy detection radius . Meh . Manual AA is very valuable on Dunkerque , she has a total of 16 dualpurpose highcaliber guns , there is no reason not to improve their effectiveness . A Dunkerque with AFTMAABFT is dangerous to engage for tier VVI carriers and will still inflict some losses against TVIITVIII carriers . Manual Secondaries can be envisaged if you plan to get Richelieu , Camo Expert will probably not be useful because Richelieu will have a very high detection range with her gigantic tower . Jack of all trade is a waste of points , get HighAlert instead , PreEmptive Maintenance is not needed , I struggle to lose turrets with Dunkerque even against TVIII ships . Source 500 games with Dunk , 65 % WR and ivxs 03 h 6 sh 2 fa 93299 .