Joe Biden flexes his muscles in warning to China with massive war game in Pacific

The lock-in and lock-out technique is used to get operators into and out of a submerged submarine undetected by enemy eyes or sensors. The Navy has a certain number of submarines with specially designed “lock-out trunks.”

During lock-out operations, commandos have to be very careful with their air levels and ensure that the air in the trunk doesn’t have too much carbon dioxide, which can be deadly for the operators and compromise the mission, as too much of the gas can create bubbles that an adversary can pick up with sonar.

Mr Galvin also said, “Mistakes under those conditions can result in convulsions, hypoxia, decompression sickness, as well as becoming disoriented, navigational errors, exhaustion, oxygen toxicity, severe cramps (especially during cold-weather diving operations) and equipment malfunctions, which can lead to not being able to have the entire team continue the subsurface mission.”

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Article source: https://www.express.co.uk/news/science/1637001/joe-biden-china-navy-drills-pacific-ocean-mediterranean-defence-news-latest