Orient Adventurer
Cable Lay Vessel(SX121)
Owner: Dong Fang Offshore Co Ltd · Operator: DeepOcean UK
CLVOperational
MHDP3Helideck
MHDP3HelideckAlso known as: Polar Onyx
Technical Drawings
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Key Specifications
Design Class
SX121
Cable Capacity
5,000t
Max Cable Diameter
630mm
Max Lay Depth
3000m
ROVs
2
Transit Speed
15.1 knots
DP / Thrusters
DP3 (6.3 MW)
Year Built
2014 (upgraded 2025)
Emissions
ZERT 0 (Conventional)
Depth Regime
Offshore
Identification
NameOrient Adventurer
Other NamesPolar Onyx
Design ClassSX121
CategoryCable Lay Vessel
StatusOperational
IMO Number9664706
MMSI538009865
Call SignV7A5268
Flag StateMarshall Islands
Marshall IslandsClass NotationDnV1A1, SF, E0, DYNPOS-AUTRO, CleanDesign, NAUT-OSV(A), COMF-V(3), COMF-C(3), HELDK-SH, CRANE, SPS, VIBR, BIS, DK(+)
Dimensions
Length Overall130 m
Breadth25 m
Depth10 m
Min Draft5.38 m
Max Draft7.6 m
Gross Tonnage11,803 GT
Net Tonnage3,541 NT
Deadweight8,207 t
Transit Speed15.1 knots
Deck & Cargo
Free Deck Space1,150 m2
Main Deck Area1,700 m2
Deck Aft70 m
Cranes
Main Crane - NOV
TypeAHC offshore crane
Lift Capacity250t @ 14m
Offshore crane NOV 250T / 3000m wire. Max lifting capacity 250T at 16m outreach and 100T at 36m, with 20T auxiliary hook (personnel transfer capable).
Auxiliary Crane 2
Typeknuckle boom AHC offshore crane
Lift Capacity12t
12T knuckle boom secondary AHC offshore crane.
Facilities
Total Berths130
Total Cabins89
Single Cabins48
Double Cabins41
Recreation FacilitiesFitness room; 3 lounges
Office Facilities1 conference room; 1 auditorium; 4 client offices
Helideck
D-Value20.88 m
Max Weight12.8 t
Certified AircraftSikorsky S-92
Propulsion & Power
Propulsion Typediesel_electric
Propulsion System
Generator capacity 6 x 2740 kW; thrusters: tunnel thruster 2 x 2140 kW and azimuth thruster 1 x 2000 kW.
Number of Engines6
Total Power17,280 kW
Generator Power17.28 MW
Environmental NotationDNV1A1, SF, E0, DYNPOS-AUTRO, CLEAN DESIGN, NAUT-OSV(A), COMF-V(3), COMF-C(3), HELDK-SH, CRANE, SPS, VIBR, BIS, DK(+); Clean Design and Green Passport.
DP ClassDP3
Max Speed15.1 knots
Fuel Capacity2,078 m3
Thrusters
2x tunnel (2.14 MW each)
1x azimuth (2 MW each)
Build Information
Delivery Date4 Mar 2014
Last Conversion2025
ShipyardUlstein Verft AS
Construction Country
Norway
NorwayConstruction LocationUlstein Verft AS, Norway
Class NotationDnV1A1, SF, E0, DYNPOS-AUTRO, CleanDesign, NAUT-OSV(A), COMF-V(3), COMF-C(3), HELDK-SH, CRANE, SPS, VIBR, BIS, DK(+)
Owner & Operator
Operator
Cable Lay Vessel Specifications
Cable Storage
Max Cable Load5,000 t
carousel - underdeck(Below Deck)
Capacity3,000 t
ManufacturerHuisman
Option to install an underdeck carousel capable of carrying and installing power cables.
Cable Handling
Max Cable Diameter630 mm
Lay Speed1,920 m/hr
Max Lay Depth3,000 m
Tensioners
Vertical Lay System (VLS) 4-track tensioner - Huisman
Max Tension275 t
Tracks4
Max Speed32 m/min
Vertical Lay System (VLS) 4-track tensioner frame, operational in both 2-track and 4-track mode. Max pull in 4-track mode 275 t including 1.2 dynfactor. Nominal line pull 230 t at 19 m/min payout speed; reduced line pull 117 t at 32 m/min. Six sets of tensioner pads varying in size and contact angle. Capable of handling product from 50 to 630 mm OD.
Shallow Water Operations
Depth RegimeOffshore
ROV Support
Has ROVYes
Number of ROVs2
Work Classwork class
ROV HangarYes