Segment
Maritime — from newbuild
to service-life extension
to service-life extension
SIGRA delivers to the maritime sector along the entire Norwegian coast — newbuild, conversions, rehabilitation and repairs on all types of composite vessels and composite structures for other vessels, as well as pipe rehabilitation and surface treatments. We have a service team that can support traditional shipyards, ship owners on-site, and offer framework agreements for ongoing maintenance.
Optimized material selection
We help you choose the right material for your needs
Composite can be engineered to give an optimal combination of weight, strength, service life and appearance. We have the knowledge and experience to guide your choices.
Up to 100 years
Expected service life of composite
Lower life-cycle cost and fewer replacements compared with steel and aluminium.
The industry's material-independent
Problem solver
Steel, aluminium, thermoplastic and composite.
SIGRA's position
SIGRA – a complete, material-independent partner to the maritime industry
Through our companies, SIGRA delivers complete solutions to shipyards, ship owners and service operators – from newbuild and conversions to maintenance, rehabilitation and technical upgrades.
Herde Kompositt – a leading player in advanced composite structures: Herde Kompositt has delivered advanced composite structures to the strictest class requirements for 70 years, going all the way back to the first GRP lifeboat in 1957. We deliver a broad range of services, from complete turnkey boats with electric propulsion and/or conventional propulsion sources, to upgrades, adaptations and maintenance.
Pipeliner and KB Stålindustri: Active at Norwegian shipyards today, delivering pipe rehabilitation, surface treatment, steelwork and advanced technical insulation — whether under planned maintenance or for urgent needs.
Odda Plast: Supplies a range of different products to shipyards, ship owners and service operators. The delivery scope covers everything from pipes and piping systems to custom-made components in a range of materials such as PE, GRE and more.
Herde Kompositt – a leading player in advanced composite structures: Herde Kompositt has delivered advanced composite structures to the strictest class requirements for 70 years, going all the way back to the first GRP lifeboat in 1957. We deliver a broad range of services, from complete turnkey boats with electric propulsion and/or conventional propulsion sources, to upgrades, adaptations and maintenance.
Pipeliner and KB Stålindustri: Active at Norwegian shipyards today, delivering pipe rehabilitation, surface treatment, steelwork and advanced technical insulation — whether under planned maintenance or for urgent needs.
Odda Plast: Supplies a range of different products to shipyards, ship owners and service operators. The delivery scope covers everything from pipes and piping systems to custom-made components in a range of materials such as PE, GRE and more.
Services
What we deliver to the maritime sector
Build — Herde Kompositt
Newbuild in advanced composite materials
From vessels to enclosed aquaculture facilities – Herde Kompositt delivers custom-built composite structures that combine quality, cost-efficiency and delivery to the strictest class requirements.
Build — Herde Kompositt
Vessel optimization and modification
Weight reduction, range optimization and structural reinforcement. Composite panels, deck structures and custom-tailored composite components.
Extend — Pipeliner
Internal pipe rehabilitation
Lining and rehabilitation of piping systems on vessels — under planned maintenance or for urgent needs. No unnecessary downtime.
Protect / Build — KB Stålindustri
Technical insulation
Process piping, tanks and valves. Energy efficiency and heat protection. Schwartmanns Fisk Cutter for metal cladding. Marine and offshore insulation solutions.
Protect — Pipeliner + KB Stålindustri
Surface treatment and tank coating
FROSIO surface treatment, internal sandblasting and tank coating with Oxiblast, as well as cladding of maritime structures. Active at Norwegian shipyards along the West Coast of Norway.
Build — KB Stålindustri
Steel and mechanical fabrication
Structural steelwork, deck plating, pipefitting and industrial assembly on vessels. EN 1090-EXC2 and ISO 3834-2 certified.
Extend — Framework agreement
Ongoing maintenance and framework agreement
Herde Kompositt, Pipeliner and KB Stålindustri coordinated against your plan — whether it's planned maintenance, class docking or an urgent need. Agreed response times and a fixed price structure.
Companies involved
Four companies. One delivery.
Herde Kompositt
Advanced composite structures, newbuild and modifications.
Pipeliner
Pipe rehabilitation and surface treatment on vessels and at shipyards.
KB Stålindustri
Steel, mechanical fabrication and pipefitting on vessels. EN 1090-EXC2.
Odda Plast
PE/GRE piping systems and custom components for vessels and shipyards.
How we work
How we work with maritime customers
Whether it's class docking, ongoing maintenance or urgent needs — SIGRA coordinates all disciplines against your plan.
01
We assess
We review the client's needs – maintenance history, technical condition and priority systems.
02
We coordinate
Herde Kompositt, Pipeliner and KB Stålindustri are aligned against your plan — whether it's planned maintenance, class docking or an urgent need.
03
We secure capacity
A framework agreement with SIGRA gives you predictable access to all disciplines — without starting a new tender process every time. Agreed response times. Fixed price structure.
Interested in a framework agreement for your fleet?
We tailor the agreement to fleet size, geography and the relevant disciplines. Get in touch for an initial conversation.
Reference projects
Documented deliveries to the maritime sector
Photo: Olav Opheim / Wind Naval ArchitectsNewbuild · Herde Kompositt
Brim Explorer
Fully electric trimaran in carbon composite. The hull is produced at our facility at Årsnes.
Electric by design
Building in carbon composite significantly reduces weight, which is a prerequisite for realizing a concept like this
World-leading efficiency
The ambition is to build boats with a range of 100 nautical miles at 20 knots without charging.
Maintenance · Pipeliner + KB Stålindustri
Knutsen NYK
Pipe rehabilitation, surface treatment and steelwork. All disciplines coordinated against the maintenance plan.
1
Supplier for all disciplines
Plan
Completed within the agreed window
Photo: HykeNewbuild · Herde Kompositt
Hyke
The future transport solution for expedition and sightseeing. - Fully equipped boat delivered from our production facility at Årsnes.
Groundbreaking efficiency
10+ hours of continuous operation on a single charge, approx. 50 nautical miles range
Prepared for the future
Built for future upgrades, including autonomous operation. The fiberglass hull gives an expected service life of up to 100 years with minimal maintenance.
Planning newbuild or maintenance?
We assess what's relevant for your vessel or fleet and set up a plan with pre-booked capacity.
Maritime, Composites & Aquaculture
Audun A. Dahl — Herde Kompositt
