Out of the Depths explores all aspects of shipwrecks across 4,000 years, examining their historical context and significance, and showing how shipwrecks can be time capsules, shedding new light on long-departed societies and civilisations. Alan G. Jamieson not only informs readers of the technological developments over the last sixty years that have made the true appreciation of shipwrecks possible, but covers shipwrecks in culture, maritime archaeology, treasure hunters and their environmental impacts. Although shipwrecks have become less common in recent decades, their implications have become more wide-ranging: since the 1960s, foundering supertankers have caused massive environmental disasters, and in 2021 the blocking of the Suez Canal by the giant container ship Ever Given had a serious impact on global trade.