Yes - The hedgehogs do work
Try testing with a DD hat has late war equip.
here is part of the equip loadout for the BlackSwan
;Cerberus62 NFF_Black_Swan loadout definition
[Equipment 1]
NodeName=M01
LinkName=4In_double_MkXVI_turret_GB
StartDate=19380101
EndDate=19431231
[Equipment 2]
NodeName=M01
LinkName=
Hhog
StartDate=19440101
EndDate=19451231