Chuuk Lagoon in the Federated States of Micronesia on a waterproof & tear-resistant map from the diving specialists Franko Maps, with on the reverse a map showing the area with drawings & details of Japanese ships & aircraft deployed during the Operation Hailstone on 17/18th February 1944. On one side are two maps of the Chuuk Islands for visitors. One panel covers a wider area within the reefs surrounding the lagoon, plus the Neoch Atoll, indicating numerous diving sites for examining shipwrecks. Several sites are accompanied by a brief description of the wreck & some are illustrated with drawings of the sunk ship. The second panel presents the lagoon itself in greater detail, with more wreck sites & notes on tourist facilities. On the reverse is a historical map with drawings of Japanese ships & aircraft involved in the WWII Operation Hailstone on 17/18th February 1944. Each ship is shown as a profile & plus top deck, accompanied by a note about its size, tonnage & circumstances when sunk.