Another man slipped inside before the hatch closed and he thudded on top of the first man, screaming. Sanchez looked at the deck of the control room now filling with seawater, with two sailors on the deck, splashing and screaming in pain. Thin red lines appeared across their faces. “Commander, we are sinking,” said a voice from the engine room. “We are now a metre below the surface and the pumps have stopped.” The rest of the crew in the control room panicked. Sanchez felt sharp stings on his legs, which now felt on fire. Ignoring the pain, Sanchez grabbed the radio. “Pen 316, this is Subsec 121. S.O.S. Our position is…” Sanchez, seeing no lights on the radio, realised it wasn’t working. He heard the screams of his crew above the noise of the ocean rushing into the vessel. Something

