Dr. Spence is an internationally known expert on shipwrecks and sunken treasures. His bachelor of Arts in Interdisciplinary Studies was perhaps the first accredited academic degree ever awarded in the United States for any program in marine archaeology. He also received one of the first five doctorates (Doctor of Marine Histories, College of Marine Arts, 1972) ever awarded for marine archaeology anywhere in the world and he has long been considered one of the founding fathers of marine archaeology.

His work has been funded by such institutions as the Savannah Ships of the Sea Museum, CRIL (the Caribbean Research Institute Ltd., Colombia, South America), the College of Charleston, the South Carolina Committee for the Humanities, and the National Endowment for the Humanities. In the early 1990s he served as Chief of Underwater Archaeology for Providencia Y San Andres, a 40,000 square mile archipelago in the Western Caribbean. He has authored more than two dozen books, and has served as an editor for a number of nationally distributed magazines. He is also an award winning cartographer and has published a number of maps and charts dealing with shipwrecks and treasure.

Always an adventurer, Spence has traveled to a wide range of exotic places in the Far East, Europe, Central and South America. He has explored castles, palaces, shipwrecks, ancient ruins, secret tunnels, and subterranean and underwater caves. He has dived in the Great Lakes, the Atlantic, the Pacific, the Mediterranean, and the Caribbean.

He has been shot at, buried in cave-ins, tangled in fishing nets, pinned under wreckage, run out of air, lost inside a wreck, and bitten by fish while pursuing his quests.

Although Dr. Spence has discovered numerous historically significant shipwrecks, including the Civil War blockade runner Georgiana and the Confederate submarine Hunley, he hasn’t only made discoveries underwater. He considers his identification of Charleston born banking and shipping magnate George Trenholm as the “Real Rhett Butler” to have been his most interesting non-shipwreck discovery. Trenholm’s fleet of fast steamers earned today’s equivalent of over one billion dollars running munitions, medicines, and merchandise through the Federal blockade. By the end of the Civil War, Trenholm was a major figure in the Confederate government. The United States actually charged Trenholm with treason and claimed he had made off with and concealed hundreds of millions in Confederate assets. Trenholm died without revealing his secrets. Spence is currently trying to uncover them.

The State of South Carolina’s claim of ownership to the Civil War submarine Hunley was based on Spence’s 1970 discovery of that vessel and his subsequent gift of his salvage rights to it to the State. Spence’s gift of his rights was made in September of 1995 at the official request of the Attorney General of South Carolina and the South Carolina Hunley Commission.

In 2013, Dr. Spence announced his discoveries at Cape Romain of the 1894 wreck of the SS Ozama and the 1881 wreck of the SS United States.

As an historian, Spence believes the biggest key to success on any expedition is the archival research that precedes it. Spence calls historical research “his drug of choice” and says, “In today’s world, time is the most expensive part of a salvage expedition. Man-hours spent in the archives can cut hundreds of thousands of dollars worth of time from the field phase of most projects.”