Siem Ruby, Siem Pearl, Siem Topaz y Siem Diamond, Siem Aquamarine, Siem Opal, Siem Amethyst, Siem Emerald, Siem Garnet & Siem Saphire

Type of vessel 10 AHTS type vessels have been built, VS 491 CD design
Description This is the largest vessel in its class built in Norway.
Client Wärtsilä (Norway)
Machines supplied to the customer by Alconza

Each vessel contains the following machinery:

  • 2 synchronous generators (3.4MW / 720rpm / 690V)
  • 2 auxiliary synchronous generators (2.18MW / 800rpm / 690V)
  • 2 asynchronous propulsion motors (2.4MW / 1200rpm / 690V)
  • 2 asynchronous prow propeller engines (880KW / 1200rpm / 690V)
  • 2 asynchronous aft thrust motors (1MW / 1200rpm / 690V)
  • 1 asynchronous vertical azimuth motor (830KW / 1200rpm / 690V)
Shipyard Kleven (Norway)
Shipowner Siem Offshore (Norway)