Port of Brownsville Multibeam Survey
Routine condition surveys are an important part of managing deep draft port facilities. In addition to individual project surveys, the Port of Brownsville completes a periodic overall 100% bottom coverage survey. We work with the Port to meet time and budget constraints.
San Luis Pass
This project was in support of the shoreline protection and restoration of West Bay Bird Island, modeling of the inlet, and documentation of changes due to a major hurricane. An initial survey of West Bay Bird Island was followed by the flood shoal area with channels in West Galveston Bay, survey of the pass, ebb shoal, and beach profiles on the Gulf side. This survey required access to marsh areas, shallow sand bars and channels with swift currents. Depths ranged from 30 feet to zero at the shoreline.
Clearance Surveys for Big Foot
To date, the largest tension leg platform that moved through the Corpus Christi Ship Channel presented unique challenges. Naismith Marine provided clearance surveys including 100% coverage multibeam and 200% coverage side scan sonar. We assisted with dock clearance, positioning, and dredge monitoring throughout the various phases.
Packery Channel - North Padre Island
Packery Channel was opened in 2006 as part of a storm damage reduction and environmental restoration project. Naismith Marine Services completes surveys four times each year. The high frequency of the surveys is used to monitor changes in the channel and surrounding waterways. The surveys extend from the entrance in the Gulf to the Intracoastal Waterway.
Bird Island Cove - West Galveston Bay
Naismith Marine completed a coastal boundary survey, borrow area surveys, marsh mound surveys, geotube, hazard, and other specialized surveys for this project. We provided construction surveying including the post-construction as-built and aerial photographs. Currently, we provide monitoring surveys to evaluate restoration success.
Nueces Bay Marsh Restoration
Wetland and marsh creation is an important part of restoring the coast. This project in Nueces Bay created new marsh to replace more than 340 acres of marsh lost by highway construction and erosion. Naismith completed design, construction, and monitoring surveys for all phases of this project.
Environmental Assessment / Biological Assessment - County Road 257
Naismith Marine completed an Environmental Assessment, Biological Assessment, and wetland delineation for a dune restoration project on the upper Texas Coast. Coordination with the various federal agencies and Corps of Engineers was a vital part of this project.
Galveston Island Beach Profile Survey
This project was in support of beach nourishment along the Galveston Seawall. Detailed profile surveys were completed from the seawall to the depth-of-closure (12,000 feet from the shoreline.) The sand/mud interface was observed using low-frequency sonar data on the depth-of-closure survey. The upland portion of the survey was completed with GPS-RTK; the surf zone with GPS-RTK on a sled; and the hydrographic survey with a dual frequency single-beam echo sounder. Approximately 40 sediment grab samples were obtained during the survey. The surveys were repeated after Hurricane Ike and have continued today for subsequent projects.
Dredging Operation Monitoring - Gulf Marine Fabricators
Our clearance surveys revealed a large shoal that would interfere with the transit of an oversized vessel. We were tasked with full coverage multibeam surveys, completed and delivered twice per day, for the duration of the dredging operations. Timing of the vessel movement was critical and multiple teams required constant updates.
Offshore Wind Farm - South Padre Island
Naismith Marine completed numerous surveys for the feasibility phase of an offshore wind farm near South Padre Island, Texas. Bathymetry, magnetometer, sub-bottom, and side scan sonar surveys were completed for approximately 40 kilometers of cable route. Additional surveys were required for wind turbine locations and cable landings.
Beaumont Multibeam Condition Survey
Post-dredge monitoring is critical to maintaining clearance for vessels. Multibeam surveys provide a detailed record of large facilities and identify small areas of concern that may be overlooked by a single-beam echo sounder survey. This survey is repeated periodically between dredging projects.
La Quinta Channel Extension
This was a post dredge certification survey to document 100% clearance to design depth for a new deep draft channel. Single beam and multibeam surveys were completed and signed/sealed drawings provided for archiving. Volume calculations were completed and documented for pay and placement area fees. Naismith Marine is proud to support the Port of Corpus Christi in its ongoing expansion.
Naismith Marine Services
Cedar Bayou & Vinson Slough Monitoring Survey
Cedar Bayou is a natural pass that was intentionally closed many years ago. Naismith completed design surveys, pre-construction surveys and continues with monitoring surveys after re-opening the pass. This project covered 5,000 acres of upland and over 30,000 acres of waterway.
North Padre Island Beach Nourishment
Beach nourishment projects are vital to the tourism industry along the Texas Gulf Coast. Naismith Marine provided surveying for all project phases from feasibility through design, construction and now monitoring. FEMA requires engineered beaches to be monitored to be eligible for reimbursement following storm damage.
Heavy Lift Vessel Positioning
Naismith Marine provided anchor locations and vessel positioning support for a heavy lift vessel at Kiewit's Ingleside facility. Multibeam and single beam clearance surveys of the deep hole are completed on a regular basis to ensure depth required for loading.
Side Scan Sonar Mapping for Hurricane Debris Removal
Hurricane Ike was a devastating storm. In addition to the cleanup efforts on land, hazardous debris that ended up in the bays needed to be identified and removed. Naismith surveyed more than 80,000 acres and processed an additional 60,000 acres of bay bottom. As a result of this work, Naismith has been awarded multiple ongoing contracts for future storm response activities.