Head office
Oslo, Norway
Karenslyst allé 18, 0278 Oslo
Karenslyst allé 18
0278 Oslo
Norway

Life-cycle thinking within the maritime industry
Calmocean’s vision is to intensify life-cycle thinking within the maritime industry — and we built the team to do it.
About Calmocean
Calmocean was founded in 2021 by Petter Heier and Magnus Hammerstad, who between them had already built and led the recycling and decommissioning business at Grieg Green. Petter had worked the yard side as ship repair manager, superintendent and CEO; Magnus is a marine engineer from NTNU and Chalmers who spent nearly a decade building those divisions. They started Calmocean because they thought the industry was answering the wrong question.
The wrong question is what do we do with this vessel now that it has stopped earning? By then most of the options are gone. The right question is asked years earlier, at the newbuilding yard, and again at every dry-docking after that. That is what life-cycle thinking means in practice, and it is why we work across the whole life of an asset rather than only at the end of it.
It also means telling owners when recycling is not the answer. A significant number of ‘too-early-to-recycle’ assets can be converted, wholly or partly, for a new life in a different segment — often on better commercial terms than scrap. Finding that route takes a network of owners, naval architects, yards and financiers, which is the other thing we have spent our careers building.
Today the team is spread across Norway, Turkey, India, China, Southeast Asia and North America, because supervision only counts if someone is actually standing on the quay. Everything we do is documented to a standard your regulators, financiers and stakeholders can use directly — and audited against ISO 9001 by DNV.

United Nations Sustainable Development Goals
Shipping’s environmental and social impact is concentrated in places most people never see: the yards where ships are built, repaired and dismantled, and on board the ships themselves. Five of the seventeen UN Sustainable Development Goals are the ones our work touches directly. We do not claim the other twelve.


Shipyards are among the most hazardous workplaces in the world, whether a vessel is being built, repaired or recycled. Our assessments examine occupational health provision, protective equipment, medical facilities and incident reporting at every yard we visit.

We audit labor conditions, not only environmental ones: working hours, wages, the right to organize, the treatment of migrant workers, and the use of child labor. A yard that manages its waste well and its people badly does not pass.

A ship is tens of thousands of tonnes of recoverable steel and a quantity of hazardous material that has to be handled properly. Inventories of Hazardous Materials — maintained across a vessel’s whole life, not only at its end — and our yard assessments exist to make sure the first happens without the second causing harm.

Where and how a ship is dismantled determines whether oils, paints and heavy metals reach the sea. Containment, drainage and the condition of the intertidal zone are part of every environmental assessment we carry out.

Governance is one of the five graded categories in our criteria set. We assess anti-corruption controls, permits and licences, contractual transparency and how a yard handles grievances — because a facility that cannot be held to account cannot be relied on for anything else.
These are assessed, not asserted. Every yard is measured against a published set of 232 factors by an independent assessor on site, and the results are graded and reported.
The Sustainable Development Goal icons are the property of the United Nations. Their use here is informational and does not imply UN endorsement of Calmocean or of its services.
Experienced maritime team
17 people across engineering, auditing, HSEQ, sustainability and finance.
Founder & CEO
petter@calmocean.noPetter has extensive experience within the maritime industry as ship repair manager, superintendent and CEO, and is the person behind Grieg Green. He holds a double MBA from ESCP and BI Norwegian Business School on top of a degree in maritime engineering from the University of Agder. Petter is an entrepreneur with a strong dedication to sustainability through collaboration and partnerships.
Founder & CCOO
magnus@calmocean.noMagnus is a marine engineer from NTNU and Chalmers University of Technology in Gothenburg. He worked at Grieg Green for nearly 10 years, building and leading the company’s recycling and decommissioning divisions.
CFO
pia@calmocean.noPia has an academic background in law and economics. She has experience from Grieg Green and Canon, working with sustainability, international tender processes and contract management in an international setting. At Calmocean, Pia is responsible for financial management and supports the company’s commercial and operational activities.
Head of Compliance
oms@calmocean.noOle holds an MSc in Marine Technology from NTNU in Trondheim. He brings extensive decommissioning experience from a decade at AF Decom, along with strong operational and technical expertise in ship and offshore recycling from his time at Grieg Green. At Calmocean, Ole leads the production and quality departments.
CTO & Regional Director APAC
allan@calmocean.noAllan is a maritime professional with more than 20 years of experience, based in Shanghai. He has held key roles in shipbuilding, manufacturing and classification, and from 2011 to 2023 led the technical team at Grieg Green. He now heads Calmocean’s APAC operations.
Head of recycling
eric@calmocean.noEric holds a BSc in Naval Architecture and Marine Engineering from Jiangsu University of Science & Technology. He has previously worked as Quality Manager at Guangzhou Shipyard International and Technical Manager Recycling at Grieg Green.
Sustainability Operations Manager
oliver@calmocean.noOliver holds an MSc in International Sustainability Management from ESCP Business School and a BSc in International Business and History from Denison University. Having spent time as a consultant across a variety of fields, Oliver brings a diverse strategic background in sustainability and operations.
Country Manager India & Senior Recycling Manager
sathyan@calmocean.noBE in Naval Architecture & Offshore Engineering from AMET, Chennai. Hands-on experience in ship condition assessment surveys, with extensive expertise in ship recycling supervision, technical reviews and yard audits.
Senior Recycling Manager & HazMat expert
nil@calmocean.noBSc in Marine Transportation Management Engineering. Eight years of experience in the maritime industry as Second Officer, ship recycling supervisor, HazMat expert, gas-free expert, and recycling and newbuilding shipyard auditor.
Recycling supervisor
kaan@calmocean.noBE in Naval Architecture & Marine Technology from the Technical University of Varna. Eight years in the maritime industry as a QC engineer, IHM surveyor and recycling surveyor, including yard audits.
Recycling supervisor
govind@calmocean.noNaval Architecture and Offshore Engineering from AMET, Chennai. A class-approved HazMat expert specializing in green ship recycling supervision, with proficiency in shipbuilding design and yard practices.
Recycling supervisor
vikas@calmocean.noBTech in Naval Architecture and Shipbuilding from Annamalai University, Chennai, plus a NEBOSH Level 6 International Diploma for occupational health and safety professionals and ISO 45001 lead auditor certification from DNV. More than seven years of experience in ship recycling.
Recycling supervisor & HazMat expert
daniel@calmocean.noBSc in Naval Architecture and Marine Engineering from Jiangsu University of Science & Technology. Former Quality Manager at Guangzhou Shipyard International and Senior Ship Recycling Supervisor & IHM Surveyor at Grieg Green.
Recycling supervisor
prabhu@calmocean.noNaval Architecture and Offshore Engineering from AMET, Chennai. A certified lead auditor with expertise in green ship recycling supervision and auditing, and extensive knowledge of ship inspections, shipbuilding production processes and shipyard practices.
Recycling supervisor
veera@calmocean.noBE in Naval Architecture and Offshore Engineering from AMET University, Chennai, with more than five years in ship recycling. Holds HazMat certification from IRS, the NEBOSH IGC and BOSIET certification.
Recycling supervisor
adzlan@calmocean.noDiploma in Information Systems from Institut Teknologi Info-Sains Mahir. An experienced IHM expert and Green Ship Recycling supervisor with over 12 years in the maritime industry, specializing in IHM inspections, recycling supervision, yard assessments and compliance with IMO and EU Ship Recycling Regulation.
Data engineer
rodion@calmocean.noRodion has a strong foundation in data-driven problem solving and analysis. With a bachelor’s degree in Computer Engineering, he has built valuable experience with multiple NGOs in project reporting and data analysis. His background in data and business intelligence plays an essential role in advancing the company’s IT solutions.
Where we are
Recycling and decommissioning happen in a handful of places in the world. We keep people in those places, which is why our supervisors are on the quay rather than on a plane.
Head office
Karenslyst allé 18, 0278 Oslo
Regional presence
Recycling and repair yards
Country office
World’s largest recycling cluster
Regional office
APAC operations
Regional presence
Southeast Asia coverage
Regional presence
Owners and operators across the region
Career opportunities
We have no time to lose. Our vision is to shape up the maritime sector in partnership with industry-leading organizations — and for that we need the best people on board.
If you care about safety and sustainable solutions, we want to hear from you. We welcome forward-leaning and talented applicants from all over the world. We offer a dynamic, flexible working environment and an ownership incentive program for the right candidates, and we are flexible on the design of the organization and the responsibilities of each position.
No position listed that fits? Send an open application to info@calmocean.no.
Tell us about your asset and we will tell you, honestly, what your options are.