CDC – The Heron

Heron’s Application for Wind

Industry - Gorillas Need Not

Apply

Iain Steven, Technical Director, CDC Ltd

All Energy, May 2016

This presentation is given with minimal text projected. The

“story” of the “Gorillas need not apply” is provided by the

presenter

Speakers Notes

Over the next few minutes I’d like to offer a Darwinian

perspective on the brief history of jack-ups.

And I’m going to be bold by suggesting that the current

evolutionary trend for bigger and bigger – isn’t

necessarily in your favour

Bigger isn’t necessarily going to satisfy your operation &

maintenance needs.

Why?

Because as Darwin himself suggested, adaptability is

the key to survival

Scorpion.

Zapata. 1st lattice

leg Jack-Up

MODU. 1956.

80ft WD.

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The Scorpion was the first jack-

up with the now familiar lattice

leg design, built way back in the

days of black and white telly,

with a maximum operating water

depth of 80ft (24m)

(image source:

http//petrowiki.org/History_of_offshore_drilling_units ) 4


Image Gorilla 1

Rowan Gorilla 1.

350ft WD with

500ft legs.

1983

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All Energy, May 2016 All Energy, May 2016

Fast Forward to 1983 and we

have the introduction of the first

music CDs in the UK alongside

the Gorilla 1. Water depth 350ft

(106m)

(image source:… http://versatel.nl/the_sims/rig/gorilla1.htm )

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All Energy, May 2016 All Energy, May 2016

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Rowan

Companies’

Rig

“Bob Palmer”

A LeTourneau

Super Gorilla

XL. 490ft WD.

Leg length

647ft

Circa 1999


16 years later, in 1999, we have the

opening of the Scottish Parliament

coinciding with the launch of the super

gorilla XL class of jack-up, with a

design water depth of up to 550ft

(167m) Bit of controversy with water depth, between

designer claims and what continental shelf

regulators will Permit as working water depth.

Somewhere between 450ft and 490ft.

(image source:.. http://www.rowan/our-fleet/rig-

details/?rig=Bob%20Palmer ) 8


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Rowan

Companies’

Rig

“ROWAN

GORILLA 7”

At Forties-E

A LeTourneau

Super Gorilla

400ft WD

(North Sea).

607ft Legs


Here is another super gorilla, the

Rowan Gorilla 7 this time.

This is the Rowan Gorilla 7 at

Forties Echo

(image source:…. http://www.rowan.com/our-fleet/rig-

details/?rig=Rowan%20Gorilla%20VII )

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11

MAERSK XLE

Class

A GUSTO

CJ70

500ft WD.

675ft Legs

Circa 2009


2014, and coming in at >$600m we have the

MAERSK XLE class of jack-up, with a design

water depth of up to 492ft (150m) operating year

round in the North Sea and legs 678ft in length (Image source:….. http://maersk.com/en/hardware/xle-rigs )

But even today, with 56 years of technological

advances in jack-up design, achieving these

water depths doesn’t come cheap.

Or – would something smaller, more flexible,

more capable of reaching the parts other jack-ups

cannot reach do a better job instead?

So – let’s talk about reaching the parts other jack-

ups cannot reach - 12


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The Heron,

470ft Leg

And how a Heron, rather than a super-sized Gorilla

might represent the next step in jack-up evolution.

With a nod to the super Gorillas, the brave and bold

Terns and the Scyllas, the installation of foundations,

towers and turbines is already well catered for within the

jack-up market.

But when it comes to the maintenance of these same

towers and turbines is bigger really better?

The super jack-ups are limited in supply, pressures on

demand will push their day rates higher. Do you want to

pay for more when less will do?

On the other hand, the Heron is purpose built to meet

the maintenance needs of offshore wind.

Image source: CDC

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With cantilever

Up to 400ft WD

470ft Leg

If you do need an installation vessel, for smaller

turbines, in developing markets – our Chameleon

variant will do the trick

Image source: CDC

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The Heron,

470ft Leg

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But for maintenance, the Heron, with its second elevating deck – is the only jack-up, in

fact the only support vessel capable of providing walk-to-work environment at nacelle

height.

As well as reaching the parts other jack-ups cannot reach, the Heron overcomes many

of the constraints due to weather and sea conditions experienced by other support

vessels. There’s no bump and jump here.

With an ability to operate in greater wind speeds than large boom cranes – and greater

wave heights than barges – your window for planned maintenance is no longer confined

to just the summer months.

Imagine being able to provide controlled conditions for inspection and repair – safety is

increased, planned operations are no longer at the mercy of the weather and your costs

are reduced.

The Heron is purpose built for providing heavy maintenance. Gearbox, generator and

blade repair and maintenance can all take place without the need to wait on – or pay for

– a more expensive crane barge.

In fact blade repair and maintenance can take place on foot – with the Heron second

deck providing a safer working environment by replacing the need for rope access.

Capable of handling up to 250 tons – more than enough t handle the gearbox, generator

or blades of even the largest turbines you’re no longer reliant on the services or

associated costs of, the large boom cranes.

And with the second extending deck providing a safer working environment, you can

eliminate the need for, the risks of and the cost of helicopter services.

In fact, with he ability to scan blades with an industrial MRI, rather than a hand held

device, inspection and repair will become more proactive, reducing the likelihood and

cost of forced outage All Energy, May 2016

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The Heron is purpose built to provide in-field central accommodation. As more wind

turbine generators are developed further offshore, you know more offshore maintenance

strategies will be required.

The Heron can house >120 personal on a stable non-moving platform. Its daughter craft

enables the in-field servicing of local turbines while the vessel itself attends to heavier

scheduled or unscheduled activities.

The Heron is a self propelled DP2 jack-up designed to MODU class. It has lots of wind

related letters after its name. The MODU class extends its competitiveness and its

market appeal, allowing the Heron to step over to work in the oil & gas sector.

It was designed specifically with offshore wind in mind.

It was designed specifically to meet your operation and maintenance needs.

And we believe it offers the next successful step in jack-up evolution.

My colleagues are handing out brochures, please take one.

And if you have any questions, we’d be delighted to answer them. Thank you.

Image source: CDC


CDC – The Heron

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