Offshore Services

Our Services

At ThayerMahan, we understand the challenges faced by offshore construction and submarine cable companies. Our advanced maritime technology provides critical, real-time data essential for connected, sustainable, safe, and automated offshore infrastructure projects, enhancing end-to-end operations.

Our Goal

We empower your core business by providing people, technology, and systems, within regulatory guidelines, ensuring safe and efficient operations.

Our People

Our team possesses deep knowledge of the offshore industry, specialized skills acquired through years of operations, and a strong military culture of leadership, making us uniquely equipped to tackle complex maritime challenges.

Our Technology

We leverage cutting-edge dual-use technologies, including the sole commercially available coherently beamformed passive acoustic sonar, to deliver superior results and drive innovation in offshore services.

Our Systems

Designed to withstand harsh marine conditions, our systems enhance operational efficiency, safety, and reliability - ensuring robust performance in even the most challenging environments.

ThayerMahan is at the forefront of economic growth in the offshore energy and construction sectors, supporting the installation, operation, security, and decommissioning of critical maritime infrastructure, including submarine cables.

Service Bundles

Services Overview

Unexploded Ordnance (UXO) and Munitions of Explosive Concern (MEC)
With over 900 years of combined expertise, ThayerMahan is unrivaled in combat and live ordnance operations both at sea and ashore worldwide. We offer:

Survey Sites, Characterize Detections, and Craft Munitions Response Plans: Comprehensive analysis and planning for UXO/MEC.

Inspect UXO/MEC, Conduct Disposition Operations, and Document Remediated Seabed: Safe and efficient handling of munitions.
Over 1 Million Man-Hours of Safe Identification and Disposition Operations: Proven track record in UXO/MEC management.

Acoustic Mitigation and Monitoring

We protect marine animals from harmful construction sounds using our Big Bubble Curtain technology, significantly reducing noise impact. Our services include:

Deployment of Flexible Hoses with Compressed Air Nozzles: Creating a protective barrier around noise sources.

Compressed Air System: Generating a steady curtain of air bubbles to resist sound waves.

Noise Attenuation: Reducing sound levels by up to 18 dB with dual bubble rings.

High-Resolution Seabed Survey
Using Synthetic Aperture Sonar (SAS), we provide ultra-high-resolution imaging to evaluate seabed conditions, detect deteriorating cables, and track biological habitats. Our surveys provide:

Unmatched Resolution: Offering a complete understanding of the seafloor.
Real-Time Data Processing: Beamforming, georeferencing, mosaicking, and digital terrain modeling.
Transportable Equipment: Flexible deployment options.
Expert Knowledge-Base: Leveraging advanced technology for superior results.

Marine Mammal Monitoring

No one can hear like we can. We use cutting edge SeaPicket™ technology to protect endangered species, combining passive sonar data with visual data from electro-optical and infrared cameras to deliver effective detection, classification, and tracking of marine mammals during nighttime conditions. We deliver: