Improved Submarine Snorkel Technology ID
The research ID for Improved Submarine Snorkel in Hearts of Iron IV is improved_submarine_snorkel.
Improved Submarine Snorkel
Naval1943
Unlock this technology with the research command and the tech ID improved_submarine_snorkel.
About this technology
An improved design prevents any water from being sucked into the engines and also reduces the radar signature of the snorkel head. Mounting this module on Submarines reduces their Visibility, making them harder to detect.