Stay at the helm
Grow your company without giving up what you built.
You have spent years building a company that ports, contractors and shipping lines rely on. Joining Marinum lets you keep running it your way, with a bigger fleet, bigger tenders and a hands-on owner behind you.
You keep the helm
Your company keeps its name, its management and its day-to-day decisions. You know your customers, your waters and your crew better than anyone, so you decide how the work gets done.
A bigger fleet behind you
Access the combined fleet of tugs, barges, jack-up rigs and pontoons, shared references and certifications, and joint procurement. Say yes to jobs you would have had to turn down on your own.
Tenders you could not win alone
Many large port and infrastructure tenders require a size and breadth no single specialist has. Towage, diving, inspection and construction bid together as one offer, with the capacity to answer demanding public customers.
An owner with boots on the ground
Marinum is backed by Celero Capital, a Nordic private equity firm that works side by side with management. Its team and advisors support hands-on in pricing, sales and marketing, digitalisation and AI, ESG, governance and M&A, and fund growth into new regions and services.
Backed by Celero Capital
Support where it makes a difference
Celero does not run your company. It brings people and tools to the specific areas where a specialist company gains most from a larger owner. The support is hands-on, delivered together with your management team.
Pricing
Structured pricing and tender calculations that reflect the value you deliver.
Sales and marketing
A clearer offer, stronger customer relationships and a market presence that wins work.
Digitalisation and AI
Modern systems and practical AI: faster tender writing and calculations, smarter crew and vessel planning, and inspection reports generated from dive and sonar data.
ESG
Practical sustainability work that customers and public buyers increasingly require.
Operations and management
Better fleet utilisation, joint procurement of fuel, machinery and equipment, and shared safety and project routines across the group.
M&A
Experience from building several Nordic groups, from first contact to integration.
Thinking about the next chapter?
Do you run a company in towage, diving, inspection, marine construction or port services? Whether you are planning for growth or for succession, we would like to hear from you. Every conversation is confidential.
- Keep your name, your crew and your customers
- Access a bigger fleet, shared references and certifications
- Bid for tenders you could not win alone
- Grow in the Nordics and in Europe with a hands-on owner
Talk to us in confidence
Lovisa Severin
Interim Head of M&A
Lovisa joined Celero Capital in 2025 and leads M&A for Marinum until a permanent head is in place. She previously worked in investment banking at Goldman Sachs in London and Frankfurt.