The Center for Coastal and Ocean Mapping/Joint Hydrographic Center, located at the University of New Hampshire, is a national center of expertise in ocean mapping and hydrographic sciences.
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Search for a Lost WWII B-17 Ball Turret
Is a piece of World War II history resting on the bottom of Lake Massabesic in New Hampshire? CCOM's ASV Team used sonar and the Echoboat ASV to search for a ball gun turret jettisoned from a B-17 bomber during a training flight in 1945.
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2026 Field Season
Where are we going? Where have we been? Visit this year's Field Season Calendar to find out. (All expeditions are subject to change.)
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What have we been up to?
Find out by reading our 2025 Executive Summary for an overview, then use the links or QR codes to access the task narratives for more details.
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Mapping in Arctic Waters
In this video from Seabed 2030, CCOM researcher Kevin Jerram is one of the expedition members aboard the I/B Oden who gives us a glimpse of what it's like to map the ocean floor in Arctic waters.
Research
Education
Outreach
UNH Leads Search for WWII Relic Lost in New Hampshire Lake for 80 Years
UNH News, July 13, 2026
Granite Geek: Searching a Lake Bottom for a Bit of a WWII Bomber is Harder than it Sounds
Granite Geek, July 13, 2026
UNH Crews Search Lake Massabesic for Missing WWII B-17 Ball Turret
Union Leader, July 10, 2026
Historic Expedition Reveals Hidden Seafloor Influence on Greenland Glacier
Environment Coastal & Offshore, June 11, 2026
E/V Nautilus Installs New EM304 Multibeam Sonar to Explore Deeper and More Than Ever!
Nautilus Live Blog, June 8, 2026
Launching the NA178 Expedition: Starting 2026 Mapping Deeper Than Ever!
Nautilus Live Blog, June 6, 2026
China Publishes Maps Detailing Minerals on the Ocean Floor
New York Times, April 23, 2026
Recent Publications
Unlocking A Fish Finder for Benthic Habitat Characterization
Scherer, Michael P. and Schmidt, Val, Oceanography, vol. 39(2), 18-22, 2026.
Uncertainty-Aware Visualization and Integration for Maritime Route Safety Assessment
Kastrisios, C., and Ware, C., Cartography and Geographic Information Science, 1–18, 2026.
A Side Selective Line Simplification Algorithm for Nautical Chart Generalization
Kastrisios, C., Cartography and Geographic Information Science, 1–25, 2026.
Atlantic Water Access and the Break-up of the C.H. Ostenfeld Gletsjer Ice Tongue, Northwest Greenland
Jakobsson. M, Kirchner, N., Nilsson, J., Stranne, C., Mayer, L., Barnett, J., Felicity A., Holmes, F.A., Calder, B., et al., Communications Earth & Environment, 7(493), 2026 .
A Unified Operational Framework for Interpolation Uncertainty in Bathymetry: Estimation, Integration, and Application to Adaptive Hydrographic Survey Design
Elias Adediran, Ph.D. Thesis Proposal Defense
Ocean Engineering
Wednesday, June 10, 2026, 11:00am
Chase 105
Subsampled Graph-Based Bathymetric Data Processing
Adriano Fonseca, Ph.D. Thesis Proposal Defense
Ocean Engineering
Thursday, May 21, 2026, 9:00am
Chase 130
It’s Not Just Depth: Estimating Uncertainty in Interpolated Bathymetry
Elias Adediran, Doctoral Researcher
UNH CCOM/JHC
Friday, May 1, 2026, 3:10pm
Chase 105