Five Deeps Expedition to map the Tonga Trench (Pacific Ocean)

The Tonga Trench was surveyed with a Kongsberg EM 124 gondola-mounted to the hull of the 225-foot DSSV Pressure Drop. The survey was conducted over the course of two weeks – May 29 – June 6, 2019. The data meet the requirements for IHO Special Order standards.

Data and Resources

Data

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Citation Information - Digital Object Identifier (DOI)

Caladan Oceanic LLC. (2021). Five Deeps Expedition to map the Tonga Trench...

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Last Updated	December 4, 2025, 17:39 (UTC)
Created	October 14, 2020, 16:40 (UTC)