Talk:Expedition/@comment-861160-20190722075506

From what I've gathered on Twitter:

B4: 500 firepower (improvements included) 280 ASW (improvements included [1 star is 1 ASW, 4 stars is 2 ASW, etc.] & some[most?] seaplanes not counted) 7 medium-calibre main guns + 3 more main guns 2CA 1CL 2DD 1SS required

43: 500 firepower (improvements not included) 280 ASW (improvements not included, seaplanes not sure), CVE flagship 3DD 2XX required

May be other requirements (level, possibly LoS)

If you have high level DDs and reasonable gear it seems possible to bring a good number of Daihatsu to B4. Bringing BB to 43 makes having space for daihatsu simple, but if you want to cheap out and bring CA for firepower instead it could be more complicated.