Global-leading manufacturer of specialist remotely operated vehicles (ROV), Sub-Atlantic, has won a second contract with Italian oil and gas subsea services provider, AALEA. The contract will see Sub-Atlantic deliver one of its class-leading Tomahawk observation ROV systems.

The Tomahawk has been optimized as a survey system. It is configured with intelligent interfaces, including an advanced subCAN control and diagnostics system, and is powered by Sub-Atlantic’s powerful DC propulsion system which incorporates Statorshield™ technology. This high-performance control, coupled with powerful propulsion, provides a stable platform which enhances its survey and data collecting capabilities.

2Sub-Atlantics-Tomahawk-observation-ROV-systemSub-Atlantic’s class-leading Tomahawk observation ROV systems

It is the second system of its kind that Sub-Atlantic has provided for AALEA with the first successfully completing a major 100km pipeline survey through the strong currents of the Strait of Messina, a narrow passage of water in the Mediterranean Sea between Sicily and the Italian mainland. A total of nearly 2.000km of survey has already been performed through both the cable route and pipeline, with nearly zero technical downtime and an average survey speed of 0.7/0.8Kts.

The survey involved Sub-Atlantic’s Tomahawk system performing in deep water using a diverse range of sensors including: a dual-head, multi beam echosounder; a fibre optic gyroscope (FOG); a bathymetric system; a doppler velocity log; hydraulic boom cameras; a pipetracker, wheeled skid; CP with electric actuator; and laser measurement equipment.

Ryan Lumsden, global product director at Sub-Atlantic, said: “Securing repeat business from AALEA underlines the ROV’s high capability and performance.

“This is great example of an electric observation class vehicle completing work normally associated with a hydraulic work-class vehicle. The reduced footprint combined with the cost effectiveness of a smaller system reinforces what can be achieved with an observation class system which is focused and optimized for a particular task. However, this does not limit its capability. For many operators, a major plus of our ROVs is that they can be loaded with a wide selection of sensors and tools to perform inspection, survey and light intervention tasks.

“AALEA is an innovative company which drives our Tomahawk system to a new level and we look forward to building on this and our working relationship with them.”

The latest Tomahawk ROV for AALEA will be manufactured at Sub-Atlantic’s manufacturing base in Kirkbymoorside, Yorkshire, and is due to be delivered in Q3 this year.

Sub-Atlantic, which has its operations hub in Aberdeen with offices in Houston and Singapore, specializes in the design and manufacture of electric ROV systems and components for operation in remote and harsh environments.

The company, which is part of Forum Energy Technologies group, designs & manufactures ROVs, trenchers, tether management systems, simulation software, data acquisition software and geosciences product management. The vehicle brands include two of the most well-known names in the industry - Perry and Sub-Atlantic. They offer the world's most comprehensive range of ROVs used for inspection, survey and deep water construction from electric observation ROVs to large, hydraulic work-class vehicles.

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