Sea Surveyor, Inc
MARINE SURVEYS
SINCE 1985

 

 

Precision marine surveys for the engineering community

 

 

Caribbean Survey


FOR DESIGN OF OFFSHORE MOORING

 

Client: Falconbridge Dominicana

Completion Date: 2006

Contract Value: $80K

SBP

Subbottom Profiler 

In August 2006, Sea Surveyor conducted a complex hydrographic, marine geophysical and geotechnical survey in the Caribbean Sea near the Port of Haina, Dominican Republic for design of a single point mooring buoy (SPMB). The proposed SPMB includes an offshore mooring and pipeline-to-shore for delivering fuel to the Port. Sea Surveyor collected sonar images and sediment samples to thoroughly map the proposed SPMB site, and prepared a report and 2 charts summarizing the results and conclusions from the survey.

The marine survey used high-resolution sonar, differential GPS navigation, and modern (2007) computer software to map the SPMB site. The survey included:

• Measuring water depths (soundings) in a tightly-spaced grid for preparation of a bathymetric contour chart suitable for engineering design and navigation.

Anchor

Sonar Image of Anchor

• Monitoring tides for correcting soundings to the MLLW tidal datum.

• Imaging the seafloor using high-resolution (600-kHz) side-scan to classify sediment type, identify geologic features, and locate man-made objects.

• Seismic profiling (2-16 kHz) to map geologic layers 7m below the seafloor,

• 24 sediment grab samples to confirm sonar classification of sand and mud, and 8 samples to confirm basalt or densely-packed sediments.

Vessel

Charter Survey Vessel

 

 

 

 

 

 

 

 

 

 

 

 

Map1

Seafloor Features Map

 

 

 

 

 

 

 

 

 

 

 

 

 

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