Orient Adventurer ULS 00722 1
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Polar Onyx (Orient Adventurer)

Originally designed and built as a subsea vessel, she was later (2025) converted to a cable-laying vessel for maintenance, installation, and other subsea activities in offshore wind operations.

Vessel Type
Related Solutions
Aftermarket Service
Ordered By
GC Rieber Shipping
Owned By
Dong Fang Offshore
Built By
Ulstein Verft AS
Year
2014
Yard Number
300
IMO Number

Primary specifications as built

Length
130 m
Beam
25 m
Dead weight
8,207 tonnes
Draught
7 m
Speed
15.1 kn
Accommodation
130 people
Deck area
1,700 sqm

Additional Data

Operating depth
-3,000 m
Fuel oil (MDO)
2,078 cbm
Fresh water
1,086 cbm
Ballast water/Drill water
6,300 cbm
MEG
318 cbm
Sewage
156 cbm
Urea
130 cbm
Highest standard of dynamic positioning
DP3 / Operation+
VLS system for installation of flexible pipe and umbilicals (50 - 630mm OD)
275 t
Note: Specifications may have changed since the original completion date.
Classifications: DnV1A1, SF, E0, DYNPOS-AUTRO, CleanDesign, NAUT-OSV(A), COMF-V(3), COMF-C(3), HELDK-SH, CRANE, SPS, VIBR, BIS, DK(+)

Aftermarket history

IMO number:  9664706

Design service

2024-08 - 2025-04  Accommodation containers, Engineering

2025-01 - 10 Basic and Detail Engineering + stability calculation

The upgrade includes relocating the existing Huisman VLS tower to new positions on the main, A, and B decks, installing a foundation for a W2W gangway system, and integrating a 3,000-tonne Huisman cable carousel. 

Orient Adventurer ULS 00723 1