Spooling Arm & Hatch Package · Dong Fang Offshore
Concept to delivery in 7 months — design, engineering, fabrication, installation and commissioning of a mission-critical spooling arm and hatch package for DFO's Orient Adventurer, with sub-millimetre tolerances on the slew bearing and carousel interface. Delivered to DNV class at ST Engineering Shipyard, Singapore.
A mission-critical cable-lay package on a tight DFO programme window, with extremely tight tolerances on the slew-bearing seat, carousel hand-off geometry and hatch sealing — all to be delivered, FAT-accepted, lifted and installed inside a 7-month window. Dimension owned the full thread: design, engineering, fabrication, FAT, lifting, installation and commissioning, on DNV class.
As part of the overall contract awarded by Dong Fang Offshore (DFO), Dimension delivered the design, engineering, fabrication, installation and commissioning of the spooling arm system and the cable-lay hatch package for the Orient Adventurer.
The spooling arm is built on a slew-bearing radial arm with 270° rotation and a 100° boom-arm — a 5 T lifting / 2 T side-load envelope, three control centres (walk-about box, operator chair, remote console) and an integrated gangway for carousel access. The hatch package is a double-acting hydraulic system with two main cylinders and four locking cylinders, capacitive proximity sensors, Rubbahatch water-tight sealing and coaming-based water protection.
| Parameter | Value |
|---|---|
| Max Extended Length | 18.75 m |
| Radial Arm Rotation | 270° (Boom Arm 100°) |
| Spooling-Arm Weight | 30 MT |
| Breadth × Height | 5 m × 7.56 m |
| Lifting Capacity | 5 T |
| Side Load Capacity | 2 T |
| Bearing Type | Slew Bearing — Radial Arm 2.64 m, Boom Arm 2.2 m |
| HPU Working Pressure | 350 bar |
| Panel Rating Voltage | 440 VAC (starter) · 230 VAC (others) |
| Degree of Protection | IP 22 (console) · IP 56 (others) |
| Hatch Opening | 4 m × 5 m |
| Hatch Cylinders | 2 main + 4 locking, double-acting hydraulic |
| Sealing Type | Rubbahatch water-tight seal |
7-month concept-to-delivery — design, engineering, fabrication, FAT, transport, installation and commissioning under one Dimension contract.
Three control centres for redundancy and operator flexibility — walk-about box, operator chair and remote console.
DNV-class spooling arm + hatch — IP 22 / IP 56 protection, 350 bar HPU, 30 MT structure.
Capacitive proximity sensors and Rubbahatch water-tight seal for harsh-environment offshore reliability.
Talk to our engineering team about feasibility, FEED, equipment supply or offshore execution support.
