Hearts of Iron - New development diary! The sea in HOI4 has previously generally been either “ocean” or “ocean in range of enemy land based aircraft”, and otherwise mattered little. That's about
What do you need for a naval invasion in HOI4 as a minor country like Sweden, Greece, Siam, etc.? - Quora
![Hearts of Iron on Twitter: "Trade Interdiction to support your undersea raiders, or Fleet in Being for your powerful capital ships.. Which Naval Doctrine is best? https://t.co/XNSZE1VuiE" / Twitter Hearts of Iron on Twitter: "Trade Interdiction to support your undersea raiders, or Fleet in Being for your powerful capital ships.. Which Naval Doctrine is best? https://t.co/XNSZE1VuiE" / Twitter](https://pbs.twimg.com/media/D6dLb2gXoAApcem.jpg)