Lack of Sufficient Oxygenation
Despite the fact that this is done for reasons related to safety, the extremely low quantities of oxygen that are present inside submarines can have disastrous effects. When there is a lack of oxygen in the body, for instance, it is more difficult for the body to repair itself after it has been injured.
Cutting oneself while working on a submarine may not be a major issue in most circumstances, but it is still something that should be avoided wherever possible. In addition, if you aren’t getting enough oxygen, your levels of energy may drop, which can also create mood swings, which makes it more difficult for a wound to heal.