Ocean Intervention III
Ocean Intervention III is a multi-service subsea intervention vessel built in 2005 by Kleven Verft AS, owned and managed by Island Offshore, and operated on long-term charter to Oceaneering International. Equipped with two Work Class ROVs, dynamic positioning capability, and heavy-lift infrastructure, it supports subsea construction, maintenance, repair, and decommissioning operations primarily in the U.S. Gulf of Mexico and international waters.
Overview and Use Cases
Ocean Intervention III is a multi-service subsea intervention vessel designed to support offshore oil and gas operations. The vessel operates on long-term charter to Oceaneering International and is utilized for a range of subsea tasks including light construction, inspection, maintenance and repair (IMR), well abandonment, and the installation of flowlines and umbilicals. Primary operating areas include the U.S. Gulf of Mexico and international waters, with documented deployments supporting operations such as bp Angola integrated riser management in 2021.
Key Capabilities
The vessel is equipped with the following intervention systems:
- Two Work Class remotely operated vehicles (ROVs), including a Maxximum® 270-hp unit
- DNV Class 2 dynamic positioning (DP) system for station-keeping and operational precision
- Large moonpools for ROV launch and recovery operations
- Heavy-lift crane capacity for subsea equipment deployment and recovery
- 1,300-ton deck capacity with 8,200 square feet of clear deck space
ROV operations aboard Ocean Intervention III are conducted via teleoperation, with trained pilots controlling the vehicles from surface control stations.
Specifications
- Length: 90.7 meters
- Breadth: 18.85 meters
- Deadweight Tonnage (DWT): 4,500 tons
- Gross Tonnage (GT): 4,202 tons
- Deck Capacity: 1,300 tons
- Clear Deck Space: 8,200 square feet
- Classification: DNV Class 2 DP
- Year Built: 2005
- Builder: Kleven Verft AS
- Owner/Manager: Island Offshore
- Operator: Oceaneering International (long-term charter)
Applications
Ocean Intervention III supports subsea operations across multiple service categories:
- Subsea construction and installation activities
- Inspection, maintenance, and repair (IMR) services
- Well abandonment and decommissioning support
- Flowline and umbilical installation and maintenance
- General subsea intervention tasks requiring work-class ROV capability
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