Under the Surface


Technology of R/V Petrel Aids in Major Discoveries

By: Mark Loproto

If you’ve been following the many discoveries of the R/V Petrel expeditions, you likely have given some thought to the type of equipment used by the pioneering researchers. Founded—and funded—by the... Read More

Ships of Pearl Harbor: USS Cachalot

By: Mark Loproto

The submarine USS Cachalot (SS-170) was laid down at the Portsmouth Navy Yard in October of 1931, the eighth of nine so-called V-boats to be produced for the United States... Read More

Wreckage of USS Hornet Located

By: Mark Loproto

On October 26, 1942, during the Battle of the Santa Cruz Islands, the aircraft carrier USS Hornet (CV-8) was lost to the Pacific. In January of 2019, just a week... Read More

Wreckage of Japanese Destroyer Isokaze Located

By: Mark Loproto

The Japanese 1st Air Fleet, or kido butai, that attacked Pearl Harbor was made up of six aircraft carriers escorted by a full complement of battleships, cruisers, tankers, and destroyers. In the... Read More

Operation Barney: Revenge for a Lost Submarine

By: Mark Loproto

Today, the Bowfin submarine is a museum ship and memorial park, one of the Pearl Harbor Historic Sites. Launched one year to the day after the attack on Pearl Harbor, she... Read More

Wreckage of USS Helena Located

By: Mark Loproto

On April 11, 2018, a research team headed by Microsoft co-founder Paul Allen discovered the wreckage of the USS Helena (CL-50, the team's third World War II-era shipwreck discovery of... Read More

USS Juneau: Another Historic Find for RV Petrel

By: Mark Loproto

On March 17, 2018, an autonomous underwater vehicle operating from the Research Vessel Petrel discovered the wreckage of the American light cruiser USS Juneau (CL-52). The explorations of the Petrel are led by Paul... Read More

Treasures of Pearl Harbor

By: Mark Loproto

During the attack on Pearl Harbor in 1941, between the United States and Japan, upwards of 420 aircraft and vessels were destroyed, their remains scattered in the harbor and across... Read More

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