SINCE 1986
XD Standard Helidecks.
All-aluminium modular helideck, 40% the weight of equivalent steel. Same engineering platform as XE, without the passive fire suppression layer. Pre-fabricated in Singapore, shipped knocked-down, assembled in weeks.
13 – 24 MT
TYPICAL DECK WEIGHT
5083 / 6082
Primary alloy
3 Weeks
TYPICAL ASSEMBLY
380+
DELIVERED SINCE 1986
WHY THIS EXISTS
Steel was never the right material. Aluminium just took time to prove it.
Steel helidecks have been the offshore default for decades. They're heavy, weld-intensive to fabricate, slow to install, and they corrode in marine environments. On a deepwater platform, every tonne of topside weight cascades through the supporting structure, foundations and installation budget.
Marine-grade aluminium alloy delivers the same load capacity at less than half the weight, doesn't corrode, and doesn't require welding to assemble. The deck typically outlives the platform it's installed on.
XD Standard is that argument made buildable. The same engineering platform that underpins our patented XE deck, supplied as a straightforward modular helideck for operators who don't need passive fire suppression.
PRECISION FABRICATION
Engineered to spec. Bolted on site.
Every support frame is fabricated to tolerances tight enough that components fit first time on site. Parts are packed directly into shipping containers and sent to platform, no trial assembly, no dismantling, no rework.
Every XD deck is fabricated in Singapore to tolerances tight enough that components fit first time on site. Parts are packed directly into shipping containers and sent to platform, no trial assembly, no dismantling, no rework.
On site, assembly is bolted only. No welding, no specialist tools, no fabrication risk transferred to the platform. Our supervisors run the install. A typical large deck goes from container to operational in around three weeks.
~3 weeks
TYPICAL SITE ASSEMBLY
Zero
WELDS ON SITE
Zero
SPECIAL TOOLS REQUIRED
ENGINEERING ADVANTAGES
Lighter, faster, outlasts the platform.
1. 40% the weight of steel
An S-92-rated XD deck weighs 24MT against 70MT for the steel equivalent. Topside weight savings cascade through every supporting structure below.
2. Modular, weld-free assembly
Bolted construction means fewer inspection hold-points, faster site work, and easy replacement of any damaged section over the deck's life.
3. Three weeks, not three months
A typical large XD deck assembles in around three weeks. The steel equivalent takes three months. The schedule difference is often the budget difference.
4. Outlasts the platform
Marine-grade aluminium doesn't corrode. The deck typically appreciates in residual value, gets reused across projects, and outlives the structure it was first installed on.
WEIGHT SAVINGS
Same deck. Half the tonnage.
A 40% weight reduction at the helideck cascades through the supporting structure, foundations and installation budget.
HELICOPTER
DECK DIAMETER
ALUMINIUM (PANCAKE)
STEEL (PANCAKE)
S-76
16 m
13 MT
34 MT
AS332L
19.5 m
18 MT
50 MT
S-92
22.2 m
24 MT
70 MT
SPECIFICATIONS
Engineered to the standards your operators audit against.
Design Standards
UKCAA CAP 437 / US RP 2L / ICAO Annex 14 · BS 8118 / Classification society requirements · Bespoke engineering to operator specification
Materials
Primary and secondary structure: AA6082-T6 marine alloy · Fasteners: SS316 (A4-70) · Safety net infill and tie-downs: marine grade aluminium
Fabrication & Assembly
Precision-fabricated to tight tolerances · Shipped knocked-down in containers · Bolted assembly only, no on-site welding · Site supervision included
Package Includes
Main beams and heli-decking panels · Perimeter safety net and drainage system · Helicopter tie-downs and built-in cable management · Steel-mating transition joints · Full documentation, classification approvals, installation supervision
APPROVALS
Certified to every standard the application requires.
Fire-tested 'equal to steel' under IMO MODU Code Section 18 in the presence of:
USCG
UKCAA
NMD
Norsok
DNV
Lloyd's Register
ICAO
ABS
IMO MODU
"Our XD deck has outlasted two upgrades to the platform underneath it. We expected a structure. We got a 30-year asset."
Client name pending
Title, Operator
PRODUCT FAMILY
Two decks. One engineering team. Choose by risk profile.
Both decks share the same fabrication, materials and approvals. The difference is whether passive fire suppression is engineered into the surface.
XD Standard
Same engineering, same modular design, no patented suppression system.
XE Enhanced Safety™
The flagship. Passive fire suppression built into the deck surface.
Choose XD when:
Choose XE when:
Full DIFFS infrastructure is already specified
The platform is unmanned or remote
The platform has on-site firefighting capacity
The application demands strict CAP 437 compliance
Manned platforms with established response protocols
Reducing DIFFS to sea-water-only matters for cost or environment
Budget is the primary constraint and steel-vs-aluminium weight savings are the main driver
Hospital, urban or rooftop deployments with strict fire codes
Documentation
Download the latest brochures.
Enquiries
Specifying an XD for an upcoming programme?
Tell us about the platform, helicopter type and operating standard. We'll come back to you within two working days.
