Mister Harrison had to develop a clock that was not affected by the movement of a ship on the ocean or changes in temperature or atmospheric pressure.
VOA: special.2010.07.14
Moving, assembling and testing ordnance, purifying and storing fuel, organizing the flight deck, mission planning, safely navigating the ship, preparing food, training and performing maintenance on important ship and aircraft systems go on around the clock.
It builds on the standard kidnapping and ransom policy by bringing in consultants to train crews in security, prepare emergency safe rooms where crews can lock themselves in until a hijacked ship can be retaken, and provide round-the-clock advice to captains on safe routes to take.