Critical Depth

By: Astra Navigo
Every submariner knows that a submerged submarine is, in essence, a sunken ship – it may be operating in a form of balance and harmony with its environment, but it’s also underwater – and because humans can’t breathe underwater, the time the ship can spend in that environment is limited — which means that when the plug is pulled, sufficient resources have to be in place to bring it to the surface again – or the crew dies.