Maritime Archaeology and State-of-the-Art Marine Survey Technology

content-placeholder-blog-template-nearviewHigh-resolution, shallow-water multibeam survey of boat basin showing pier structures and sunken vessel.

In addition to our proven aerial-marine survey methods, Nearview and Substructure offer unmatched expertise and survey capability for detection, mapping, and recovery of maritime archaeological resources. Stefan Claesson, founder and CEO of Nearview, has 25 years of experience in maritime archaeology. He is a leader in the fields of submerged prehistoric archaeology, intertidal and waterfront archaeology, shipwreck and submerged aircraft archaeology, military history, and marine GIS. Substructure provides world-class hydrographic survey, commercial diving, and customized marine fabrication services. Our maritime archaeology team has the capability and resources to deploy worldwide, and our survey products exceed IHO Special Order standards. We have a broad range of in-house survey technology including:

  • Single beam, side scan, and multibeam sonar
  • Magnetometer
  • Sub-bottom profiling


3D multibeam point cloud of sunken tugboat in Boston Harbor.


Orthomosaic and 3D model of the remains of an early 1900s shipwreck in the intertidal zone.

Our commercial diving outfit meets OSHA and USACE diving standards and guidelines. We provide SCUBA as well as Surface-Supplied Diving support. Additionally, we deploy Seatronics ROVs including the Predator II and MK3 equipped with state-of-the-art positioning, sonar, and imaging systems.

Our survey vessels include:

  • Orion (flagship hydrographic survey and diving vessel)
  • Mintaka (33-ft aluminum hulled survey vessel)
  • Reservoir-Approved Survey Barge for drinking reservoir and shallow water survey applications (American Water Works Association (AWWA) compliant)
  • Custom Aluminum Barges as work platforms (for diving and recovery operations)

We have an in-house fabrication unit, and can build work platforms and sediment containment units for dredging and underwater archaeological recovery operations to any specifications.

Please contact us to discuss your survey needs for coastal and submerged cultural and archaeological resources.


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