Design and operation of torpedo tubes installed on German U-Boats during WWII did not differ greatly from other such designs in the world. They used pressurized air to launch the torpedo and automatic venting after the launch.
These quarantinable diseases include cholera, diphtheria, infectious tuberculosis, plague, smallpox, yellow fever, viral hemorrhagic fevers, severe acute respiratory syndrome, and influenza caused by novel or reemerging influenza viruses that are causing or have the potential to cause a pandemic.
Organic or pathological disease are terms used to describe more advanced stages of disease that are accompanied by physical, cellular changes that can be identified by diagnostic testing. Examples of organic diseases include cancer, arthritis, heart disease, gastric ulcers, and emphysema. Too often, diseases are diagnosed when they are more advanced, end-stage organic diseases.