Operational imperatives for most inshore and offshore projects include underwater investigative and mapping capabilities on par with specific regulatory standards. We incorporate the latest underwater investigative, positioning, and mapping strategies to provide clients georeferenced subsurface data in all marine environments.
Our divers are certified air-mixed gas commercial divers through The Association of Diving Contractors Internations (ADCI), and have undergone extensive training for a variety of underwater tasks and projects. In addition to our professional training, we use the best underwater equipment systems to ensure our success and diver safety. Our breathing systems and underwater communication technologies are produced by companies such as Ocean Technology Systems (OTS), Kirby Morgan Dive Systems, Inc. (KMDSI), and other leading diving equipment manufacturers. We pride ourselves on our professional expertise and underwater capabilities.
We provide the following Underwater Services:
Phase I Archaeological Survey (Non-Disturbance)
This type of archaeological survey is typically characterized as a non-disturbance investigation of cultural materials. Depending on the marine environment, we can produce various forms of datasets ranging from illustrated site maps to digital photogrammetric 3D models. All of the acquired informaton is georeferenced with survey-grade positional accuracy and measurement precision using the Underwater Acoustic Localisation and Referencing (UALR) method developed by Matthew H. Thompson as part of his doctoral degree thesis at the University of Oxford.
Phase II Archaeological Survey (Evaluation)
This type of archaeological survey involves some form of bottom disturbance and requires special permitting from a custodial agency. A Phase II survey can be used to locate buried objects that were detected during a marine remote sensing survey, exposing site features of partially embedded site features, test trenching in areas determined to potentially have cultural materials, and many other applications. Similar to that of the Phase I survey, all activities are documented using applicable technologies and georeferenced using the UALR method.
Phase III Archaeological Survey (Excavation and Recovery)
This type of archaeological survey includes complex excavation and recovery of submerged cultural materials. As part of this process, the client must be in posession of a recovery permit and have a conservation laboratory prepped to accept the cultural remains. Detailed documentation and physical context of excavated remains are critical for archaeological interpretation. Comparable to that of Phase I and II surveys, Phase III project data is georefenced using the UALR method. In doing so, this information can be uploaded to GIS software systems for detailed site mapping and predictive modeling.
Diver Reconnaissance and Underwater Mapping
We understand that you may have a project that requires underwater mapping which does not involve archaeology. Do not worry, we do that type of underwater mapping, as well! Depending on your project specifications, we can provide underwater mapping solutions that vary from illustrated maps to digital imagery of the bottom.
Search and Recovery
Did you lose something? We can help you find it! We require our clients provide proof of ownership for the search and recovery of objects (non-archaeological).
Underwater Photography and 3D Photogrammetry
We provide underwater photography and photogrammetry services using a Nikon D810 DSLR camera system with a Nauticam underwater housing. All images are processed using Adobe software and photogrammetric imagery is generated using Agisoft Metashape software. Every photogrammetry model is georeferenced using the UALR method which provides latitude and longtidude coordinates in an established reference frame (e.g. WGS84, UTM, NAD83, etc.).
Do you have a question?
If you have a question regarding our Underwater Services for your projects, do not hesitate to ask! We are happy to discuss the various aspects of your project to determine the type of services you may need. Use the link below to access our Contact information.