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CSR 2016 – Boskalis
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biofuels, although the program also features a Heavy Fuel Oil
(HFO)-type biofuel. Boskalis provided funding to source biofuels
for testing and for the bunkering of its own vessels, which it made
available for the pilot. We used hydrotreated vegetable oil (HVO)
to start off with. We supplied one vessel – our trailing suction
hopper dredger Willem van Oranje, running on Wärtsilä 32
engines – with a 30% blend biofuel in 2015.
In the first half of 2016 we funded and performed testing on the
cutter suction dredger Edax, as it worked on the first phase of the
Marker Wadden project in the Netherlands. The biofuel used on
the Edax was a blend made out of lignocellulosic waste streams
from a Finnish pulp and paper company, in bio-/fossil blends of
up to 50%. Lignin is the wood polymer that provides structural
support to plant tissues. Lignin is a by-product of many industrial
processes, for example the production of cellulose from wood, and
is therefore available in large quantities for use as an energy source.
There were no performance issues on either the Willem van
Oranje or the Edax and CO
2
reductions were in line with
expectations. In later phases of the program we will be testing
HFO-type biofuels. The aim of the program is to define the
parameters that have been set for these fuels.
Boskalis is a strong believer in creating a business case around
sustainability. If the business objectives, including technical
compliance, economic viability and scalability, can be aligned with
sustainability, this initiative has tremendous potential for broad
adaptation and could result in meaningful emission reductions.
5
CO
2
(Metric Tons ‘000)
Fleet (%)
Offices (%)
1,249 MT
99.8
0.2
fleet
offices
CO
2
2016 *
CO
2
2015 *
fuel HFO
MT (‘000)
fuel MGO
MT (‘000)
Electricity
KWh (million)
Gas
Mj (million)
MT (‘000)
MT (‘000)
Dredging & Inland Infra
54
85
440
663
Offshore Energy
164
87
790
793
Towage & Salvage
–
5
16
61
Offices
4
11
3
5
Total
218
177
–
–
Co
2
MT (‘000)
679
567
2
1
1,249
1,521
* For the method used to convert fuel to CO
2
, see
page 65of this report.
** Estimated CO
2
reduction 3 MT, due to use of electricity generated from wind energy
**