Subsea
DGPS Positioning
Marinsa USA provides efficient and cost-effective solutions for offshore navigation and positioning and mapping services. Our highly qualified and experienced field personnel utilize the latest equipment and software applications in supporting high risk, drilling and installation activities.
Precise differential navigation and positioning
Precise acoustic navigation & positioning
Navigation & positioning for rig moves
Seafloor mapping
Dredge positioning support
Search and recovery survey / positioning support
ROV Survey Services
ROV inspections and survey
Marinsa USA specializes in providing comprehensive subsea inspection and survey services. Our offerings include:
Pipeline, Umbilical, and Cable Inspection Surveys
Seabed Mapping: Conducted via vessel or ROV.
Structural Inspections
Clearance Surveys: Including unexploded ordnance (UXO) assessments.
Data Interpretation and Processing
Geographical Information Systems (GIS) Support
ROV Construction Support
Marinsa USA also excels in providing subsea construction support. Our services in this area include:
Pre-Lay and Post-Lay Surveys
Touchdown Monitoring
As-Laid and As-Built Surveys
LBL Positioning and Subsea Metrology
Seabed Dredging & Excavation
Marinsa USA provides excavation, dredging, and trenching services to remove material from the seabed, creating channels for cable or pipeline laying. Methods include ploughing, jetting, dredging, mechanical excavation, and cutting. Their services also cover pipeline and cable lowering, de-burial, protection, seabed preparation, free-span rectification, and seabed clearance. These operations are crucial for the safe and efficient installation of subsea infrastructure in offshore projects.
Offshore Geotechnical Survey Services
Marinsa USA offers comprehensive geotechnical assessments to help you better understand seabed and subsurface conditions around potential infrastructure locations. Our geotechnical site investigation services support both drilling operations and the critical stages in the development of offshore and onshore facilities. These assessments provide vital data for the engineering of offshore jackets and platforms, jack-up rigs, and the installation of pipelines and cables, as well as support for dredging, reclamation, and other civil works.
Marinsa USA provides the following services:
Geotechnical Soil Investigations for Offshore and Onshore Projects
Engineering Analysis for Foundation Studies and Design
In-Situ Seabed PCPT (optional), Vibro-Coring, and Gravity Core Sampling
Geo-Hazard Shallow Gas Desktop Studies
Soil Laboratory Testing and Reporting
A typical site survey solution includes (though is not limited to):
A range of geotechnical options (CPT, vibrocore, gravity core, etc.)
Geotechnical Drilling Rig Vessel (optional)
These services are essential for ensuring the safety and effectiveness of your offshore and onshore projects.
Saturarion & Air Diving
At Marinsa USA, we collaborate with experienced diving business partners to offer a comprehensive range of subsea services tailored for the Oil & Gas sector. Our offerings include:
Saturation Diving Services
Air Diving Services
Installation and Construction
Inspection, Maintenance, and Repair (IMR)
We operate vessels equipped to conduct saturation diving activities, featuring advanced diving systems that meet the highest international standards and incorporate the latest state-of-the-art technology. This enables us to deliver safe and efficient subsea operations for our clients.
