Geophysical Data Acquisition Services

The vendor is required to provide geophysical data acquisition services using an uncrewed surface vessel.
•    We require a DriX h-8, a 24’ uncrewed surface vessel to acquire seismic profiles of the lake sub bottom, for all survey operations. 
•    The h-8 has been designed and built specifically for hydrographic surveys for charting groups such as NOAA’s office of coast survey and is outfitted with hull mounted Kongsberg em2040 MKII dual-ping dual-swath echosounder for sub bottom seismic data acquisition, making it the ideal tool for this project. 
•    The h-8 will allow for continuous 24-hour survey operations to maximize efficiency. 
•    This approach will leverage the uncrewed surface vessel (USV) to provide a reliable, efficient, and cost-effective solution for conducting nearshore hydrographic surveys. 
•    Equipped with advanced positioning, navigation, and remote sensing systems, the h-8 can collect high-resolution bathymetric and environmental data with minimal human intervention. 
•    Survey equipment, line spacing, and survey speed are designed to provide the maximum value for future interpretation and geological mapping.
•    The survey design and coverage limits, derived from the geospatial information provided, divides the approach into two approaches.
o    The first approach is comprised of broadly spaced transects oriented relative to expected geological features. these transects will provide the basis for regional geological interpretation and mapping. 
o    A subset of areas of interest will be approached with tighter spacing transects with the intent of providing high resolution subsurface mapping.
•    Both approaches will be guided by existing bathymetry data in the area collected for office of coast survey missions. 
•    A map of the survey area is shown below.

- Contract Period/Term: 3 years
- Questions/Inquires Deadline: September 26, 2025