Fire Ice by Clive Cussler

This compilation of excerpts details a complex international thriller involving the National Underwater and Marine Agency (NUMA) and its agents, Kurt Austin, Joe Zavala, and Paul and Gamay Trout, as they unravel a nefarious plot by Russian mining tycoon Mikhail Razov. Razov, advised by the mystical Boris, seeks to destabilize the world by triggering tsunamis using methane hydrate bombs to further his claim as a descendant of the Tsar and lead a neo-Cossack revival. The narrative spans various locations, from a hijacked US Navy submarine (NR-1) in the Black Sea and a devastating tsunami in Maine, to a thrilling confrontation on Razov's superyacht in Boston Harbor and the recovery of a lost Romanov crown. Throughout their adventures, the NUMA team faces dangerous adversaries, narrowly escaping death while working to expose and thwart Razov's world-altering ambitions.