Deepwater Surveys of World War II U.S. Cultural Assets in the Saipan Channel

Past Expedition

Dates

February 24 - March 11, 2022

Location

Pacific Ocean

Overview

From February 24-March 11, 2022, a team of researchers from Scripps Institution of Oceanography, the University of Delaware, and Project Recover explored the waters off Tinian and Saipan in the Northern Mariana Islands in hopes of locating and documenting U.S. warplanes lost during World War II. While analyses of collected data are ongoing, the team made some exciting initial discoveries, including two aircraft crash sites.

The expedition team used a combination of mapping and remotely operated vehicle (ROV) surveys in their search for missing aircraft. Side scan sonar systems mounted on two REMUS 600 autonomous underwater vehicles (AUVs) were used to identify targets that were then explored using Marine Applied Research and Exploration’s ROV Beagle. All together, the expedition team completed a total of seven dives, ranging in depths from 300 to 600 meters (984 to 1,969 feet), collecting video and still imagery of submerged archaeological sites. Using an optical imager deployed on the REMUS 600 AUV, they collected additional high-resolution comprehensive site images that will assist in site analysis and outreach. Mapping data were also collected throughout the expedition using the ship-based multibeam sonar system. Much of the area had not been previously mapped at the coverage or high resolution completed during this expedition.

Multibeam data collected off Tinian Island during the Deepwater Surveys of World War II U.S. Cultural Assets in the Saipan Chanel expedition. *Image courtesy of NOAA Ocean Exploration.*
Download largest version (jpg, 2.6 MB).

Through the ROV and mapping surveys, the expedition team discovered and then documented two World War II-era aircraft crash sites. While analyses of data from these sites are ongoing, they do not appear to be the B-29 aircraft that were targeted for discovery during the expedition. The team also collected additional image and video data at the B-29 aircraft site that was discovered and explored during the 2016 Deepwater Exploration of the Marianas expedition, and new mapping data expanded this site’s boundaries and resulted in the discovery of new features. Analysis of data from this site is also ongoing. Additionally, a field of dispersed unexploded ordnance (UXO) was discovered and mapped during the expedition.

View the initial Expedition Overview.

During the Deepwater Surveys of World War II U.S. Cultural Assets in the Saipan Chanel expedition, the team explored the site of the B-29 aircraft lost in World War II near Tinian Island that was discovered during a NOAA Ocean Exploration expedition in 2016. This side scan sonar image generated from data collected during the current expedition shows the aircraft. *Image courtesy of Deepwater Surveys of World War II U.S. Cultural Assets in the Saipan Channel expedition.*
Download largest version (jpg, 11.5 MB).

The Benefits of Exploration: What Lies At the Intersection of Archaeology and Technology?

The surveys conducted during this expedition will not only allow researchers to document and inventory the sites of lost submerged B-29 aircraft, but will also provide data for the potential discovery of additional archaeological sites, allow the stories of men who lost their lives to be remembered and shared, and advance deepwater archaeology from a technological/engineering perspective.

March 8, 2022

The Key to the Central Pacific: The Capture and Strategic Development of the Mariana Islands by the United States in World War II

During the Deepwater Surveys of World War II U.S. Cultural Assets in the Saipan Channel expedition, scientists, archaeologists, and historians are hoping to find the wreckage sites of some of these planes that were lost in operational accidents shortly after takeoff from Saipan and Tinian.

March 4, 2022

Expedition Overview

From February 24-March 11, 2022, a team of researchers from Scripps Institution of Oceanography, the University of Delaware, and Project Recover explored the waters off Tinian and Saipan in the Northern Mariana Islands in hopes of locating and documenting U.S. warplanes lost during World War II.

February 24, 2022