“It’s hard to get that information from shipwrecks because the majority of them have gone down by accident,” explained Piers Baillie, the founder and director of the marine research centre Global Reef, located on the holiday island of Koh Tao. In this case, however, working with the navy and department of marine and coastal resources, Global Reef was able to collect data before and after HTMS Hanhak Sattru and HTMS Suphairin were sent to the bottom of the ocean.