Siem Offshore Inc


Siem Offshore Inc. holds ownership or management interests of 43 vessels.

The vessels in operation include:

  • 10 large-capacity anchor-handling, tug and supply (“AHTS”) vessels
  • 13 mid-size and large-size platform supply vessels (“PSVs”)
  • 5 offshore subsea construction vessels (“OSCVs”; category also includes multi-purpose field and ROV support vessels)
  • 7 supply/crew/standby vessels located in Brazil, 6 offshore support vessels in Canada
  • 1 well-stimulation vessel
  • 1 scientific drilling vessel

In addition, Siem Offshore manages 2 AHTS vessels, of similar design to the 8 owned by the company, in a pool arrangement.

At the end of 2017, the Company owned 782,094,365  shares of Siem Offshore (OSE Symbol: SIOFF), or 83.0%.

The Company is represented on the board by Kristian Siem and Michael Delouche.

For more information regarding Siem Offshore, see