(from the back of the book)
The sea is still? Not at all!
Three deep-sea adventures with ready-made investigators hose throw the players with the cold water:
Human cargo (Menschenfracht) - stowaways on board a deep-sea freighter on the way from China to the US need eagle eyes to not fall to certain doom.
Ice Prison (Eisgefängnis) - The crew of a Soviet submarine experience at the height of the Cold War that it can get hot even in Arctic latitudes.
Tangaroa - Problems in a research station on the seabed provide a closed-room atmosphere with particularly high atmospheric pressure.