Service Overview
A Complete Engineering Foundation for Marine and Offshore Projects
MJR Power & Automation provides in-house marine electrical design and engineering expertise across power, automation and electronic systems. Our engineers support projects from early-stage definition and FEED through concept development, specification production, detailed design, technical studies and class approval.
By maintaining engineering capability in-house, MJR can coordinate multiple disciplines through one delivery route and retain technical continuity as a project progresses into engineering, construction, installation and commissioning. This supports both focused design requirements and complex turnkey marine and offshore projects.
Who this is for Vessel owners, shipyards, offshore contractors, project engineers and technical teams requiring reliable project definition, coordinated marine electrical engineering and technically robust design outputs for newbuild, retrofit, upgrade or offshore projects.

Key Features
Engineering Support Across the Full Design Lifecycle
MJR's marine electrical design consultancy covers the engineering activities required to define, develop and verify marine and offshore electrical systems, with additional support for cost engineering and class approval.
FEED — Front End Engineering Design
Concept Design
Specification Production
Detailed Design
System Modelling
Safe & Hazardous Area Design
Protection & Discrimination Studies
FMEA / FMECA
Engineering Approach
In-House Expertise Connected Through One Delivery Route
MJR's in-house specialists combine marine electrical power, automation and electronic engineering within a coordinated project structure. This allows requirements, system interfaces, calculations and design decisions to be managed together rather than as disconnected work packages.
The same engineering knowledge can then remain with the project as it moves from concept and detailed design into construction, installation and commissioning, supporting continuity across the complete delivery lifecycle.
Project Definition
Establish operating requirements, existing-system constraints, technical interfaces and the objectives that will shape the design.
Multi-Discipline Engineering
Coordinate electrical power, automation and electronic engineering within one in-house design route.
Design Verification
Use modelling, calculations, protection studies and structured technical review to verify system integrity.
Class Approval Support
Develop the required engineering information and support class-review requirements where they apply to the project.
Technical Studies & Design Calculations
Calculations and Studies Aligned with Marine and Offshore Requirements
Whether the requirement covers a single circuit or a complete installation, MJR uses engineering studies and design calculations to verify electrical-system performance and support technically robust marine and offshore designs.
- Load Balance Assessment of connected loads and expected operating demand.
- Short Circuit Calculations Evaluation of prospective fault levels and equipment duties.
- Volt Drop Calculations Verification of cable and electrical-distribution performance.
- Busbar Strength Calculations Assessment of busbar performance under normal and fault conditions.
- Harmonic Calculations Review of harmonic distortion and its impact on the electrical system.
- Load Flow & Transient Stability Analysis of electrical-system behaviour during normal operation and changing conditions.
- Protection & Discrimination Studies Coordination of protective devices to support selective fault isolation.
- System Modelling Modelling of system behaviour to support technical decisions and design verification.
- FMEA / FMECA Structured assessment of failure modes, their effects and, where required, their criticality.
- Cost Engineering Assessment of engineering options alongside the cost implications of the developing design.
How It Works
A Clear Route from Early Definition to Approved Design
MJR can support the design process from the first definition of project requirements through engineering development, verification and preparation for client or class approval, with continuity into later delivery stages where required.
Step 001
Discover
Understand the vessel or asset, operating requirements, existing equipment, project constraints and key system interfaces.
Step 002
Define
Develop the project basis, FEED or concept design, system architecture, technical scope and specification requirements.
Step 003
Develop
Progress the agreed concept through detailed design, system modelling, calculations, technical studies and engineering documentation.
Step 004
Verify
Review system performance through calculations, protection studies, FMEA/FMECA and coordinated engineering checks.
Step 005
Approve
Prepare the design package for the required client and class review before progressing into construction, installation or commissioning.
Applications
Where Consultancy & Design Support Is Applied
For newbuild projects, MJR can support shipyards, vessel owners and project teams with FEED, concept development, system specifications and detailed marine electrical, power and automation design.
For retrofit and life-extension projects, engineering can begin with assessment of existing systems and interfaces before developing replacement or upgrade designs that integrate with retained vessel equipment.
For offshore and specialist equipment, MJR's electrical power, automation and electronic engineering capability can support the design and integration of complex equipment and systems from concept through to installation and commissioning.
Deliverables
Structured Information for Technical Evaluation
Consultancy and design outputs are developed around the requirements and stage of each project, providing the engineering information needed to support technical review, procurement, approval and subsequent delivery.
Design Basis & Project Definition
Defined operating requirements, technical scope, interfaces, constraints and design objectives.
Specifications & Detailed Design
Engineering specifications and developed design information for the systems within MJR's agreed scope.
Calculations, Models & Studies
Relevant load, fault, voltage-drop, harmonic, stability, protection, modelling and FMEA/FMECA outputs.
Approval & Project Documentation
Engineering information prepared to support client review, class approval and progression into construction, installation and commissioning.
Share your vessel, system and project requirements with MJR.
The Questions We Get Asked Most
Common questions about MJR's marine electrical engineering, construction and system-integration capability.

