SeaVision utilizes numerous techniques to perform accurate, high-resolution surveys based on a project's clearly defined objectives. Hydrographic surveys provide critical information about the depth and character of the bottom to clients around the world, in every phase of maintenance, development, or construction project. We have demonstrated our out-of-the-box approach to tackling logistical challenges (specifically in locations with limited access to structures/features of interest).
Simply put, Hydrographic surveys tell us how deep the bottom is and what it's like? Some of the techniques we most frequently employ are:
RTK-GPS positioning provides us with highly accurate horizontal and vertical positioning which compensates (real-time) for changing water level conditions. Single beam echosounding can be an effective tool for precise depth measurements, especially in shallow environments.
Multibeam echosounding generates "dense" data sets with accurate coverage of nearly 100% of the bottom, resulting in highly detailed bathymetric maps. Dual/multi-frequency echosounding can also be deployed to measure the thicknesses of sediment layers or to search for buried objects and utilities.
Since its founding, SeaVision has utilized ROVs to offer cutting-edge remote underwater inspection and research services. Remotely operated vehicles (ROVs) provide a valuable platform for investigating deep locations and sites with confined access, where divers would be subject to potentially severe risk. ROVs possess the capability to simultaneously collect information from multiple auxiliary systems (still and video cameras; external lighting; temperature, depth, and heading sensors, etc.).
SeaVision often utilizes our VideoRay Pro4 mini-ROV, but we also work with a select group of inshore ROV specialists in order to provide more substantial coordinated ROV services, when necessary. The Pro4 is a small but capable ROV, venturing to depths of 1000 feet, penetrating tunnels up to 1750 feet, carrying multiple auxiliary sensory/support systems, and even allowing for remote control of a range of custom-developed tools.
Sometimes, the full characterization of an underwater site requires a variety of remote surveying or sampling techniques in order to gather the information necessary to fully support the design, construction, or management of an underwater asset. Our team draws from a range of acoustic, geophysical, and visual systems to develop in-depth characterizations of underwater environments.
We provide survey results in geographically referenced, scaled, industry-standard formats to be used for project design and construction phases, but when high-resolution bathymetric imaging is insufficient for full site characterization, SeaVision draws upon additional techniques to meet our clients’ objectives. Our repertoire includes underwater solutions that meet or help meet many of the common objectives of any marine maintenance or construction project, such as identifying potential navigational hazards, locating buried pipelines and cable crossings, or the characterization of submerged features.
The completion of a project can depend on our ability to adapt (and even repurpose) industry standard technology and tools. The underwater investigation techniques that we provide are:
We deliver these solutions as both stand-alone services and within fully-integrated survey project reports. Don't hesitate to reach out to us if your question hasn't been answered or if your situation seems particularly unique. We're always up for a challenge.
Sediment Sampling & Characterization
Our years of experience supporting sensitive dredging projects, have afforded us the expertise to begin offering sediment sampling and characterization services, which can prove essential during planning, design, and construction phases of a variety of underwater dredging projects.
Utilizing vibracore, direct push, grab, and customized sampling techniques, we can provide clients with a turn-key sampling and sediment characterization solution to meet their project requirements.
We appreciate your interest in SeaVision Underwater Solutions. We hope this page will help answer your questions regarding the myriad ways that SeaVision might support your business. Although we discuss some of the tools, equipment, and technology at our disposal, we are always working to expand our expertise so please don't hesitate to contact us with any additional questions or concerns.
The information, examples, and images here on our services page will begin to familiarize new clients and first-time visitors of the site with our extensive background and expertise and help to clarify the breadth, scope, and some common applications of the services we provide.
SeaVision's creative "outside the box" approach has proven essential in overcoming complications that can otherwise hinder the timely completion of even the most thoroughly planned and carefully executed project.
After the successful installation of our custom-developed grapple into the dewatering pump's 100 ft (approx) discharge pipe, the ROV can be repositioned to better monitor remaining retrieval operations.
Extreme weather, accidents on or near the water, and even properly planned and executed construction and dredging projects can significantly alter the topography of the bottom, exposing or introducing navigational hazards. Ports and shipping channels can transform overnight into dangerous, unnavigable fields of debris.
Although the following video represents just one part of a multifaceted project, it showcases one benefit to the supplementary presentation and asset management tools we often provide clients (at their request). Three dimensional rendered map overlays, captioned photo slideshows, and video simulations can supplement post-project reports - highlighting, organizing, simplifing, and translating relevant, actionable data into easy to understand, industry standard multimedia formats and file types.
As this example of an underwater investigation demonstrates, our ROVs SD video suffices in many marine environments, especially if weather and site conditions support visibility. By utilizing multiple cameras, we are able to view a feature from multiple angles, in real time. We are able to synchronize multiple video formats with high resolution still photographs to produce dual-display, split-screen, and a range of other multimedia presentation formats.