Offshore &
Subsea
Engineering
Services
From underwater inspection to offshore installation and repair, Kalout Marine Services provides engineering and operational support for marine and subsea projects.
Our services bring together commercial diving, remotely operated vehicles (ROV), underwater inspection and NDT, pipeline intervention, and offshore structural work. The scope of each operation is defined around the asset, the task and the conditions at the project site.
Marine &
Subsea Services
Kalout Marine Services supports inspection, maintenance, installation and repair across offshore assets, subsea infrastructure, vessels and coastal projects.
Explore the service areas below to identify the activities relevant to your project. The scope, execution method and supporting resources are defined according to the asset, site conditions and operational requirements.
Commercial Diving & ROV Services
Underwater work may require direct diver access, remotely operated observation or a combination of both. The approach depends on the task, water depth, access conditions and the intervention required.
Our service scope includes:
- Air diving
- Saturation diving
- ROV support and services
- Diving support vessel (DSV) supply
Diving and ROV activities can support inspection, installation, maintenance and repair within the wider project scope.
Underwater Inspection, NDT & IMR
Inspection establishes the condition of an asset and provides information for maintenance and repair decisions. Depending on the assignment, the work may involve visual observation, non-destructive testing or investigation of a specific area of concern.
Services include:
- Inspection, maintenance and repair (IMR)
- Subsea inspection
- Underwater non-destructive testing (NDT)
- Pipeline inspection
- Tank inspection
Inspection findings help determine whether further investigation, maintenance or intervention is required.
Explore Underwater NDT Services
Subsea Pipeline Services
Pipeline work can involve inspection during installation, assessment of an existing line or intervention following a reported problem.
Kalout’s pipeline service scope brings together inspection, survey and repair activities, with the sequence of work determined by the condition of the line and the project requirements.
Services include:
- Pipeline inspection and condition assessment
- Leak investigation and damage identification
- Pipeline pigging operations
- Post-lay survey
- Emergency pipeline repair
- Underwater repair and installation of repair components
Pipeline repair clamps have formed part of Kalout’s repair work. Their suitability for a particular intervention depends on the damage, pipeline condition and engineering requirements.
Offshore Installation & Subsea Construction
Offshore installation involves coordination between structural work, subsea access and the activities taking place at the surface.
Kalout’s services cover installation and associated underwater operations for offshore structures and subsea infrastructure.
Services include:
- Installation of offshore structures
- Jacket installation support
- Installation of subsea cables and umbilicals
- Dismantling and hoisting
- Subsea engineering
- Seabed interventions
The work scope should identify the installation sequence, access requirements and interfaces with other contractors and operations.
Explore Jacket Installation Services
Underwater & Hyperbaric Welding
Welding may form part of an underwater repair, structural intervention or installation project. The appropriate method depends on the component, its condition and the technical requirements of the work.
Services include:
- Subsea welding
- Hyperbaric welding
- Welding activities associated with underwater repair and installation
The welding method, preparation requirements and inspection scope are defined for the specific task.
Explore Underwater Welding Services
Survey, Positioning & Subsea Measurement
Survey and positioning activities provide information about the worksite, asset location and installed infrastructure. They can support planning, installation and documentation of completed work.
Services include:
- Marine and subsea survey
- Site survey
- Post-lay survey
- As-built survey
- Long baseline (LBL) metrology
- Positioning services
- Geophysical services
The survey scope is determined by the information required, site conditions and the intended use of the findings.
Seabed, Coastal & Port Works
Projects at the seabed and shoreline may involve preparing a work area, supporting infrastructure or carrying out coastal and port works.
Services include:
- Rock installation works
- Seabed interventions
- Coastal and shore protection
- Dredging
- Land reclamation
- Port infrastructure works
- Debris clearance
These activities require a defined work area, an agreed scope and coordination with the surrounding marine operations.
Vessel & Rig Support
Vessels and rigs may require underwater inspection, maintenance or support for a specific operational task.
Services include:
- Hull cleaning
- Rig services
- Rig support
- Cofferdam operations
The scope is established around the asset, access arrangements and the work to be completed.
Specialist Services & Consultancy
Some assignments require a specialist scope alongside the wider marine or subsea operation.
Services include:
- Marine and subsea consultancy
- Unexploded ordnance (UXO) identification and disposal
For specialist assignments, the required expertise, authorisations and execution arrangements must be established as part of project scoping.
From Project Information to an Operational Scope
A service list is the starting point. Planning the work requires an understanding of the asset, the objective and the conditions in which the operation will take place.
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Review the Project Information
The initial review considers the asset type, location, reported issue or required activity, available records and known constraints.
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Define the Scope and Interfaces
The proposed scope identifies the inspection, installation or intervention required, together with its relationship to other project activities.
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Plan Access and Execution
Diving, ROV, survey and supporting resources are considered according to the task. Access conditions, operational limitations and safety requirements inform the plan.
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Assess Findings and Complete the Agreed Work
Observations made during the operation inform subsequent decisions. Any changes to the planned intervention should be reviewed against the agreed scope and project requirements.
Explore Our Project Experience
Project records show how individual services come together in a marine or subsea assignment.
Explore Kalout’s portfolio for examples of underwater operations, offshore installation and repair work.
Frequently Asked Questions
Can several services be included in one project?
Yes. A project may combine survey, diving, ROV inspection, NDT, installation and repair. The combination depends on the asset and the work required.
How is the choice between diving and ROV made?
The choice depends on the task, access conditions, water depth and whether direct physical intervention is required. Some assignments may use both methods.
Can we request an inspection before deciding on a repair?
Yes. Inspection can be scoped as an initial stage to establish asset condition and provide information for subsequent decisions.
What information is useful for an initial enquiry?
Provide the asset type, project location, required activity or reported issue, known water depth and proposed schedule. Drawings, photographs and previous inspection records can help clarify the scope.
How are specialist operations scoped?
Specialist work requires a review of the technical requirements, site conditions, necessary resources and applicable authorisations before execution arrangements are agreed.
Discuss Your Marine or Subsea Project
Whether your project concerns inspection, pipeline repair, offshore installation, survey or marine infrastructure, share the available information with Kalout Marine Services for an initial review.
Please include:
- Asset type and project location
- Required service or reported issue
- Known water depth and access conditions
- Available drawings, photographs or inspection records
- Proposed schedule and operational constraints