WELCOME SEA INSTALLER - A2SEA

WELCOME SEA INSTALLER
19 February 2013

WELCOME SEA INSTALLER
And welcome to you to this event which we have looked forward to for a long time!
Today, Tuesday 19 February 2013, we celebrate our new vessel SEA INSTALLER. The vessel is one of the newest
and most modern offshore wind installation vessels in the market right now. All the knowledge that A2SEA has gained
as pioneers in the offshore wind business since the beginning in 2000 has been implemented into the vessel.
This brochure gives you a thorough insight into the vessel and its technical capacity.
Over the next 2 months, SEA INSTALLER will install turbines at Anholt Offshore Wind Park and afterwards she will
be deployed in the Irish Sea on the project West of Duddon Sands until the summer of 2014.
Thank you for celebrating SEA INSTALLER with us.
Enjoy your tour on board the vessel.
Best regards,
Jens Frederik Hansen, CEO, A2SEA A/S
IMPORTANT INFORMATION – SAFETY REGULATIONS
Welcome on board SEA INSTALLER.
Quality and safety are central to everything we do at A2SEA and all processes we carry out are characterised by the same objectives:
Safety first, no accidents or incidents, no damage.
Please respect our safety regulations.
We have a smoking policy applying to all our vessels. Smoking is only allowed in designated areas outside. Please only walk in the designated
areas.
Fire alarm
Continuous sounding of the alarm signal. The alarm is followed by an announcement on the PA (Public Address) system. Please pay attention. In
case of a fire alarm you must leave the vessel immediately. Please obey instructions given by the vessel’s crew or the A2SEA staff.
Enjoy your visit on board,
HSEQ team
Read more about our safety regulations on www.a2sea.com

• SEA INSTALLER’s deck measures 3350 square metres
• The deck is reinforced and can carry 15 tons per square
metre and a total load of 5000 tons
• The vessel can accommodate eight 3.6 MW turbines or
four 6MW turbines at a time
• SEA INSTALLER was built at the COSCO shipyard in
China under close supervision by A2SEA’s construction
department
• SEA INSTALLER measures 132 metres from stem to stern
and the hull is 39 metres wide
• SEA INSTALLER can operate at depths of between 6.5 and
approx. 45 metres
• SEA INSTALLER can work in three different modes:
• Floating – as an ordinary vessel during transport
and loading of turbine components
• Semi-jacked-up during installation in fine weather
or when soil conditions are difficult
• Fully jacked-up during installation.
• SEA INSTALLER weighs 20,000 tons fully loaded.
DECK
SEA INSTALLER is a state-of-the-art vessel based on our experience with
the rest of the fleet, and the result is an ultra-modern and effective installation
vessel. SEA INSTALLER is designed to meet the challenges that follow
in the wake of market demands for ever larger wind turbines at increasing
sea depths.
From the deck of SEA INSTALLER, all wind turbine components are loaded
from the quay and stored until the vessel reaches its destination at the offshore
wind farm.
The deck of SEA INSTALLER measures 3350 square metres, the size of
half a football field.
The deck has been specially designed for wind turbines in order to maximise
the use of available space. As a result, the four jack-up legs are cylindershaped/round
instead of the traditional triangular shape. This saves a large
amount of space.
The crane used to lift wind turbine components on and off SEA INSTALLER
is mounted round one of the legs, which also saves some space compared
with the layout of our other vessels.
For practical and safety reasons, all brackets and hatches are flush with the
deck. The result is a completely uniform, flat surface, which makes it easier
for the crew to move around without stumbling or falling, while minimising
the risk of damaging wind turbine components or the vessel during loading.
Compared with other installation vessels, the deck on SEA INSTALLER has
been reinforced so it can carry 15 tons per square metre compared with the
standard requirement of five tons per square metre. This makes it possible to
load and transport larger wind turbine components, for example wind turbine
towers and foundations.
The size of the deck makes it possible to transport, for example, eight 3.6 MW
turbines. The first installation vessel in the A2SEA fleet could accommodate
four 1.8 MW turbines.
CRANE
The crane on SEA INSTALLER is the vessel’s workhorse. The crane is used
to lift wind turbine components from the quay unto the vessel and to lift and
position the components on site at the offshore wind farm.
The electrical crane is of the GUSTO brand with a capacity of 800 tons at
20 metres outreach or 600 tons at 30 metres outreach. The crane can also
be adjusted to 2 x 400 tons dual lift in two individual lifting arrangements.
With its current equipment and design, SEA INSTALLER is optimised to
transport and install wind turbines of 3–6 MW but can also transport larger
components.
Very few turbine components weigh more than 300–400 tons, but the capacity
of the crane makes it possible to handle wind turbine foundations
weighing up to 800–900 tons.
The lifting height is 100 metres from the deck or 120–130 metres measured
from the surface of the sea if the height of the vessel is included.
Due to the many heavy lifts, the SEA INSTALLER crane – like the rest of
the vessel – has increased FATIGUE LIFETIME. The term reflects that all
constructions and parts on the vessel have been reinforced to ensure high
capacity and a long useful life.
The lifting capacity at SEA INSTALLER has been optimised for large-scale
offshore wind turbine projects but to further increase the capacity of the
vessel, the crane will be updated within the next 2–3 years to raise the lifting
capacity to 900 tons; the same capacity as the sister vessel NB 002 will
have when delivered from the shipyard in 2014.
SEA INSTALLER has the same capacity as A2SEA’s entire current fleet, and
once the sister vessel NB 002 will be in operation in 2014, A2SEA will be in
an even stronger position on the market for offshore wind turbine installation.
• The crane on SEA INSTALLER is a GUSTO GLC-800-ED and
fully electrical
• The crane has a lifting capacity of 800 tons or 2 x 400 tons in
dual lift
• In addition to the main crane, SEA INSTALLER also has five
smaller cranes
• SEA INSTALLER will double A2SEA’s capacity compared with
the current fleet.
• The crane will be upgrated to a lifting capacity of 900 tons and
a 120 meter boom in 2014

JACKING SYSTEM
The four legs help giving SEA INSTALLER her characteristic appearance.
When SEA INSTALLER is in the harbour, her legs are completely retracted,
and when the vessel reaches its destination, the legs are lowered so they
rest on the seabed. All this is controlled from the bridge.
Raising or lowering the legs is called jacking up, which comes from the word
jack. SEA INSTALLER thus operates by raising or lowering the four legs using
a large number of jacks. During operation, the entire vessel is jacked up
to the desired height with the deck typically around 15–25 metres above the
surface of the sea. Once the task has been completed, the vessel is jacked
down so it can sail normally.
An effective jacking system is essential to enable a vessel like SEA INSTALLER
to operate and function effectively. SEA INSTALLER cannot sail during jacking
and to avoid wasting too much time waiting, it is important to be able to
raise and lower the legs as quickly as possible.
• SEA INSTALLER has six
3020 kilowatt engines
• SEA INSTALLER has
three Voight Schneider
propellers for propulsion
and three Bov propellers
for satellite-based
positioning
• The vessel can
manoeuvre with a precision
of 25 cm under optimum
weather conditions.
The jacking system can raise a fully loaded SEA INSTALLER at a speed of
approximately 1 metre per minute, which is twice as fast as standard jacking
systems in the wind turbine industry.
A single day is normally set aside for each offshore wind turbine, so
it is important that the jacking system functions effectively and impeccably.
SEA INSTALLER is fully functional even with two jacking cylinders
out of operation at each leg, and, as with other constructions on
SEA INSTALLER, much has been done to ensure optimum safety and
durability.
To make sure the legs rest firmly on the seabed, each leg has a so-called
spudcan – like the sole of a shoe. The spudcan on the legs measures 108
square metres per leg, so SEA INSTALLER has a solid 432 square metres
footprint once the legs have been lowered.
A special jetting system at the bottom of the legs can flush the legs free of the
seabed when they have to be raised. Depending on the soil conditions, the
legs may have penetrated up to 21 metres into the seabed, and without a jetting
system, lifting the legs would be like pulling a gum boot out of a mud hole.
• The jacking system on SEA INSTALLER is a double hydraulic
system
• There are eight jacking cylinders at each leg, i.e. 32 in total
• The legs on SEA INSTALLER can be raised and lowered at a
speed of 1 m/min
• The legs on SEA INSTALLER are 84 metres long
• The spudcan on the legs measures 108 square metres per leg, i.e.
432 square metres in total.
ENGINE ROOM
No vessel is without an engine room. A huge amount of raw power is
required on board SEA INSTALLER, so the engine room consists of three
separate rooms, each equipped with two 3020 kilowatt diesel-electric engines.
This gives a total of six engines with a combined capacity of more than
18,000 kilowatt, generating high voltage power to propel the vessel, and
for the jack-up system, the cranes and the many cooling, heating and
ventilation systems on board. This is equivalent to the power required for
2,5 million low energy light bulbs – if one should need that.
Like the rest of SEA INSTALLER, the engine room is designed to optimise
vessel operation. Even with two of the six engines out of operation, the
vessel remains fully operational. In a worst case scenario, the vessel can
sail with only one engine.
The result is a large amount of raw power, not to mention a high degree
of reliability of supply, which is essential when A2SEA counts on installing
at least one wind turbine per day. While vessels in the oil and gas industry
typically sail to a specific position, where they are jacked up and remain
for shorter or longer periods of time, wind turbine installation vessels are
constantly on the move, either to transport the turbines to their destination
or in connection with installation.
In addition to the engine power required to sail SEA INSTALLER, the engine
room supplies power to a special satellite-based navigation system
also called DP (Dynamic Positioning), which can maintain a given position
during operation with a tolerance of only 25 cm.

CONTROL ROOM
An installation vessel like SEA INSTALLER has many electrical and pressurised
systems, from the vessel’s engines to the hydraulic jack-up system,
ventilation systems, cooling systems and toilets, not to mention service
water for up to 60 people. Everything is controlled from the control room
on SEA INSTALLER.
It is therefore not just cranes and engines that need to function. There
are tanks for drinking water and sewage; the vessel’s ventilation and airconditioning
systems provide fresh air and the right temperature on board,
and the cooling room in the galley obviously has to function as well. All these
systems and processes are monitored and controlled from the control room.
• The mess on SEA INSTALLER
is open 24/7
• It is prohibited to drink
alcohol on board
SEA INSTALLER
• A special office is available
where guests on board the
vessel can work undisturbed.
To be the chief engineer on board SEA INSTALLER is like being responsible
for processes and systems in a small Danish village. To help the chief
engineer with the monitoring, SEA INSTALLER has installed an Integrated
Control Ship System (ICSS).
The advanced computer-based ICSS system helps monitor and control
temperature, power consumption, water consumption and oil pressure.
CHANGING ROOMS AND GYM FACILITIES
SEA INSTALLER can accommodate 60 people, including crew and guests.
Installing offshore wind turbines can be a wet and dirty job, so the crew
needs good facilities for changing and showering – we call this the Comfort
Zone. The Comfort Zone is where the crew changes from work clothes to
leisure wear, and facilities are provided for relaxation and exercise before
continuing to the lounge area or private cabins.
It is prohibited to take work clothes to the individual cabins. We therefore
also have a Clean Zone, where it is not permitted to wear work clothes.
The changing room facilities make it clear that SEA INSTALLER maintains
a high standard throughout the Comfort Zone. In addition to being pleasant
for the crew, it is also important when the crew is unable to do anything but
wait during bad weather.
For the same reason, much attention has been paid to the gym facilities.
Here the crew has plenty of opportunities for weightlifting and fitness training
if the wait becomes too long.
MESS, GALLEY AND CINEMA
At A2SEA we have always employed our own experienced crews just like
we operate our own fleet. This gives us maximum control and means we
can ensure the highest standards of safety and quality.
However, being a crew member on an installation vessel like SEA INSTALLER
can be a challenging job, both physically and mentally. We spoil our crew
members when they are off duty, and we do so at what we call our Recreational
Deck – the area on SEA INSTALLER which comprises mess,
galley and cinema.
The mess is a natural gathering point because the work gives a good appetite.
The mess is open 24/7 while the vessel is working on a job. Here
you do not find fancy food in very small portions; instead we serve good,
honest food, large steaks and plenty of accompaniments on a par with
well-known restaurants on shore.
It is prohibited to drink alcohol on board, but the crew can consume anything
from soft drinks and juice to coffee and other hot drinks.
SEA INSTALLER also gives the crew the option of watching films, as the
vessel has a cinema where the crew can choose the films they want to
watch.
Finally, we have a department with an office where guests on board the
vessel can work undisturbed. The office is popular as we often have customers,
suppliers, experts and other guests on board.

• SEA INSTALLER can
accommodate 60 crew
members and guests
• Everyone on board has a
single cabin
• The crew and any customers
on board share the same
lounge and cabins
• It is not permitted to wear
work clothes in the lounge
area and in the cabins.
BRIDGE
The tour of SEA INSTALLER finishes in the penthouse apartment – the
bridge, a 285 m2 large top-modern wheel house with the latest communication
and navigation equipment.
The bridge is a tailor-made construction and reaches beyond both railings.
From here you have a good view of the cargo, the crane as well as the
harbour – a considerable improvement compared with former installation
vessels. In addition, the design has taken the finer details into account, and
the advanced satellite navigation equipment makes it possible to manoeuvre
SEA INSTALLER with 25 cm precision.
SEA INSTALLER can be operated from control panels placed on different
parts of the bridge; the vessel has a front bridge, two side bridges and a
rear bridge. To this should be added a control panel for the crane and the
jack-up systems. It is often the same person who manoeuvres the vessel
and operates the jack-up systems.
LOUNGE AND CABINS
SEA INSTALLER has accommodation for 60 people staying in single
cabins. It is important to us that SEA INSTALLER is a state-of-the-art
vessel using the latest technology, and on one important point we break
with traditions: the fitting out of the cabins.
The design of SEA INSTALLER has focused on providing single cabins
for everyone. Rather than fewer, larger cabins accommodating several
crew members, as is often the case in the oil and gas industry, the
cabins on SEA INSTALLER are smaller but they afford the crew some
privacy.
We call it the One Team concept. We believe that if you eat and relax
together, you also work better together. The lounge area is therefore
shared by everyone on board.
The lounge area and the cabins have effective sound insulation so the
crew can relax or sleep without being disturbed by the work on board.
Master Brian Rudi Bendixen
At first sight, an important thing seems to be missing on the bridge: there
are no large charts on the desk with pencil and sextant markings.Today,
navigation is by satellite; everything is electronic and there is actually not a
single paper chart on board SEA INSTALLER.
As a second generation installation vessel, SEA INSTALLER is a top-modern
vessel which is based on experience acquired during many hours of
work on our other vessels. The vessel has a higher installation speed than
previous vessels and the crane a larger boom length, making the vessel
more efficient than other installation vessels. To this should be added that
SEA INSTALLER is incredibly hard-wearing as a result of her reinforced
construction and optimised processes.
A2SEA moreover has a committed and highly competent team of seamen
and experts in the installation of offshore wind turbines on board, which
allows us to state with conviction that:
SEA INSTALLER is the installation vessel for the future wind turbine
industry.
If the accommodation on SEA INSTALLER had been designed for
the oil and gas industry, the vessel could have accommodated more
people. On board SEA INSTALLER our crew and customers have
single cabins.
In addition, the lounge area where the crew can relax is shared by
crew and any customers on board. There are no special facilities for
VIPs that can be the source of envy.
• SEA INSTALLER can be manoeuvred from the bridge by a single
person
• The bridge is 50 metres wide and the total area measures 285 m2
• There are five control panels on the bridge from where the vessel
can be manoeuvred
• SEA INSTALLER can be manoeuvred in the so-called DP2 mode

SEA INSTALLER
specifications
Technical specifications
General
Vessel
Type of vessel
DP2
Classification
Flag
SEA INSTALLER
Self-propelled jack-up vessel
(at charterer’s request)
DNV
Danish
Technical Dimensions
Length
132 m
Breadth
39 m
Draft
5.3 m
Leg length
83 m
Deck load
15 t/m²
Free deck space 3350 m² (subject to deck layout)
Total net deck load 5000 t (depending on stability)
Service speed
12 kn Max
Operating water depth 6.5 - 45 m (depending on tide, penetration)
Jack-leg System
No. of legs 4
Jacking system Double Hydraulic System
Jacking speed
0.50 m/min
Spudcan footprint 105 m²
Wave limit jacking 2.0 m Hs (subject to site specific assessment)
Main Crane
Type
Gusto GLC-800-ED
Main boom length 94 m
Max crane capacity 800 t @ 24 m outreach (600 t@30m)
(optional up to 900 t subject to boom configuration)
Cargo Crane
Type
Marine cranes
No. of cargo cranes 5
Main boom length 25 m
Max crane capacity 20 t
Tank Capacity
Fuel 1000 m³
Fresh water 450 m³
Sewage tanks 300 m³
SEA INSTALLER is based on year’s
of experience in this market and
is a huge step forward in capacity
and possibilities. This vessel can
work in three main “modes“ and is
self propelled and fitted with accommodation
for two full installation
crews:
• Floating crane vessel with
restricted crane loads
• Semi Jacked up vessel with
reduced load on the legs for
harbour use and on sites with
difficult soil conditions
• Fully jacked up vessel
We have focused on making a vessel
with excellent crane position
to maximize the usage of the deck
area and minimise handling of the
cargo onshore and offshore. The
vessel is built for operations in
tidal areas and difficult soil conditions.
Visit A2SEA.com
Power Sources
Main engines
Power supply
6 x 3020 kW
6.6 kV, 400V, 230V, 110V, 50 Hz
Charterers’ Accommodation
Charterers’ personnel 35 persons
Charterers’ cabins 35 single cabins
Office facility
2 offices with 6 work desk
Other facilities Rest lounge (shared with vessel crew)
Mess room (shared with vessel crew)
Gym facilities (shared with vessel crew)
REV: 120620

Scan and watch installation at
Gunfleet Sands 3