Alpha Force: Black Gold: Book 9 by Chris Ryan
Target: Assassin! The five members of Alpha Force are training in the Caribbean when an oil tanker runs aground, spilling oil - black gold - into the seas. Diving down to the stricken tanker, Alpha Force soon discover that all is not as it seems. But they will need all their skills and ingenuity - powerboating, scuba diving, jet skiing - when a bomb explodes and an assassin strikes . . . High-octane thrills from a master of adventure, bestselling author, TV presenter and an ex-SAS hero CHRIS RYAN. Includes Chris Ryan's top SAS tips on Safety and Survival in and around water.