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Largest Oil and Gas Support Services Companies in Norway (2026)

A ranked list of active oil and gas support services companies in Norway, based on the latest comparable revenue reported in public registry filings.

  • 20 companies
  • Displayed in EUR
  • Updated 2026-08-17
Ranked companies: Oil and Gas Support Services Companies ranked by latest reported revenue
Rank Company Industry Latest revenue Profit/loss Employees Year Website
1 DEEPOCEAN AS Sign up for full profile Oil and Gas Support Services €600,800,357 €124,309,052 959 2025 Register free to reveal
2 OCEAN INSTALLER AS Sign up for full profile Oil and Gas Support Services €352,048,766 €69,436,777 197 2025 Register free to reveal
3 KAEFER ENERGY AS Sign up for full profile Oil and Gas Support Services €300,530,851 €17,232,986 1,818 2025 Register free to reveal
4 DOF SUBSEA NORWAY AS Sign up for full profile Oil and Gas Support Services €238,904,464 €13,568,199 110 2025 Register free to reveal
5 IKM TESTING AS Sign up for full profile Oil and Gas Support Services €165,659,540 €18,440,979 1,006 2025 Register free to reveal
6 ALLSEAS NORWAY AS Sign up for full profile Oil and Gas Support Services €113,419,977 €5,589,457 Not available 2025 Register free to reveal
7 LINJEBYGG AS Sign up for full profile Oil and Gas Support Services €103,215,028 €1,655,320 658 2025 Register free to reveal
8 VAN OORD NORWAY AS Sign up for full profile Oil and Gas Support Services €77,853,848 €2,115,335 Not available 2024 Register free to reveal
9 AKOFS NORWAY OPERATIONS AS Sign up for full profile Oil and Gas Support Services €68,557,355 -€838,416 124 2025 Register free to reveal
10 OLYMPIC HOLDING CHARTERING AS Sign up for full profile Oil and Gas Support Services €66,313,252 €2,520,102 Not available 2025 Register free to reveal
11 ALTERA INFRASTRUCTURE PRODUCTION AS Sign up for full profile Oil and Gas Support Services €61,985,271 €7,564,386 196 2025 Register free to reveal
12 THREE60 ENERGY NORWAY AS Sign up for full profile Oil and Gas Support Services €55,966,388 €386,534 118 2025 Register free to reveal
13 ISLAND OFFSHORE MANAGEMENT AS Sign up for full profile Oil and Gas Support Services €55,612,869 -€696,335 393 2025 Register free to reveal
14 REACH SUBSEA SHIPPING AS Sign up for full profile Oil and Gas Support Services €54,508,452 €6,046,443 Not available 2024 Register free to reveal
15 SLB KRISTIANSAND AS Sign up for full profile Oil and Gas Support Services €44,330,916 -€12,859,170 193 2025 Register free to reveal
16 KANFA AS Sign up for full profile Oil and Gas Support Services €43,054,724 €2,375,745 63 2025 Register free to reveal
17 OLYMPIC CREWING AS Sign up for full profile Oil and Gas Support Services €42,287,795 €1,360,173 333 2025 Register free to reveal
18 IKM SUBSEA AS Sign up for full profile Oil and Gas Support Services €40,558,137 €152,775 177 2025 Register free to reveal
19 NORTH SEA SHIPPING AS Sign up for full profile Oil and Gas Support Services €37,166,774 €4,158 17 2025 Register free to reveal
20 OPTIME SUBSEA AS Sign up for full profile Oil and Gas Support Services €35,210,480 -€1,962,099 Not available 2024 Register free to reveal

Source currency retained · FX 2026-06-22