Floodgate
Alistair MacLean
 An Irish terrorist organization, known as the "FFF" has detonated a bomb, which bursts dykes in the Netherlands, causing massive flooding of Amsterdam's Schiphol Airport. Unless their demands are met (i.e. immediate withdrawal of all British military forces from Northern Ireland), they threaten to detonate more bombs, flooding Holland beneath a wall of water from the North Sea. Detective Lieutenant Peter van Effen, a man with a sardonic sense of humor and many hidden talents, and his fuzzy-minded boss, Chief of Police De Graaf, are called in. Lieutenant Van Effen is also an undercover operative with connections to a Dutch criminal gang, and sets about to sabotage the FFF terrorists, one way or another. Remarkably, in the Dutch translation of the book (Hoogwater) [1], the plot has been changed and Amsterdam's Schiphol Airport had not been flooded. In the Dutch version only a Fokker Friendship is destroyed on the runway [2].