Here is the full list of all 23 Victory At Sea achievements.
Complete the Atlantic campaign as USA or Britain.
Sink three combat ships in battle when commanding a single ship.
Sink ships from each ship category.
Sink one hundred ships in campaign mode.
Earn one hundred million warbonds in a single campaign.
Sink twenty destroyers in campaign mode.
Capture fifty ports.
Sink to the bottom of the sea.
Complete the Pacific campaign as USA or Britain.
Complete the Mediterranean campaign as USA or Britain.
Complete all the campaigns.
Win all the historical battles.
Earn five hundred million warbonds in a single campaign.
Sink six combat ships in battle when commanding a single ship.
Own at least one ship of every category.
Recover covert intelligence.
Capture an enemy captain.
Capture an enemy operative.
Complete the Atlantic Campaign as Germany.
Complete the Pacific Campaign as Japan.
Complete a campaign on Hard difficulty.
Complete a campaign on Expert difficulty.
Sink at least four enemies in combat with a fleet of submarines.