![]() Siem Offshore Siem Offshore owns and operates offshore support vessels (OSVs) for the offshore energy service industry. | ||||
Founding Date | Founding Date 1996 | Founding Date 2005 | Founding Date 2003 | Founding Date 1997 |
Type | Type Subsidiary | Type Public | Type Public | Type Private |
Tags | ||||
Locations | Locations Santa Cruz de la Sierra, BO HQ | Locations Kristiansand, NO HQ Perth, AU Rio De Janeiro, BR Dartmouth, CA St. John's, CA | Locations Dublin, IE HQ | Locations Calgary, CA HQ Brisbane City, AU Pune, IN Canonsburg, US |
Employees | Employees 479 | Employees 1,2365% increase | Employees 290 | Employees 3841% decrease |
Valuation ($) | Valuation ($) N/A | Valuation ($) 804 m | Valuation ($) 87.8 k | Valuation ($) N/A |
Financial | ||||
Revenue (est.) | Revenue (est.) N/A | Revenue (est.) $271.5m (FY, 2025) | Revenue (est.) N/A | Revenue (est.) N/A |
Cost of goods | Cost of goods N/A | Cost of goods N/A | Cost of goods N/A | Cost of goods N/A |
Gross profit | Gross profit N/A | Gross profit $271.5m (FY, 2025) | Gross profit N/A | Gross profit N/A |
Net income | Net income N/A | Net income $113.8m (FY, 2025) | Net income (£765k) (FY, 2024) | Net income N/A |

Siem Offshore owns and operates offshore support vessels (OSVs) for the offshore energy service industry.
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