MacKinnon & Olding
MacKinnon & Olding (M&O) is a Nova Scotia-based marine construction and industrial services company with 40 years of experience.
M&O supports shipbuilding, marine infrastructure, defence, and industrial projects, delivering disciplined execution in regulated, safety-critical environments where schedule certainty and technical precision are essential.
Registered to ISO 9001
Certified Systems
These certifications reflect structured processes, compliance oversight, and continuous improvement.
- ISO 9001 – Quality Management
- COR Certification – Construction Safety Nova Scotia
Services
M&O provides marine construction and industrial services across shipbuilding, defence, and infrastructure projects, supporting complex work environments from planning through execution.
- Marine and waterfront construction
- Shipbuilding and ship repair support
- Skilled trades and workforce deployment
- Engineered access and scaffolding
- Surface preparation and protective coatings
- Industrial insulation and flooring systems
- Project coordination and site execution
Industry Recognition
Chair’s Safety Excellence Award
Construction Safety Nova Scotia
Cost Excellence Award
Irving Shipbuilding
Top 10 – Crest Awards
(Industrial Coating)
Home Safe
Safety is foundational to how M&O operates. Guided by our Home Safe philosophy, teams embed risk management, accountability, and disciplined execution into every project.
Our Shared Values
These values guide how we operate across Twinshore and are reflected in each of our operating companies.
Protecting People and the Environment
Being Honest, Sincere, and Professional
Building Relationships
Developing Our Team
Focusing on Clients
Contact Us
Mackinnon and Olding Ltd
8 Ralston Ave, Dartmouth, NS B3B 1H5
Part of Twinshore
We operate within Twinshore, a family-owned industrial services group focused on long-term strength and disciplined growth.
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