Boskalis CSR report 2017

CSR 2017 – BOSKALIS 43

OFFSHORE ENERGY The CO 2

certification that was achieved in 2015 and successfully upgraded in 2016 form an integral part of the EMS. These systems further support us in reaching our target of reducing our energy use. EMS remains an ongoing progress, the results of which are reported to the relevant authorities and the Boskalis Taskforce Energy Management. CO 2 EMISSIONS IN 2017 Boskalis measures and reports on the fleet’s total CO 2 emissions based on fuel consumption. In 2017 total emissions of the group amounted to 1.22 million tons of CO 2 (2016: 1.25 million tons). DREDGING & INLAND INFRA CO 2 emissions at Dredging & Inland Infra amounted to 551,000 tons (2016: 440,000 tons), approximately 95% of which was attributable to the traditional trailing suction hopper dredgers and cutter suction dredgers. The 25% increase is the result of the following factors: utilization of the trailing suction hopper dredgers increased to 35 weeks (2016: 27 weeks). This is mainly caused by the increase of the Dredging activities resulting in higher utilization levels for the large trailing suction hopper dredgers in particular. Utilization of the cutter suction dredgers increased to 14 weeks (2016: 9 weeks) and is primarily caused by the Helios, taken into service in the second half of 2017.

emissions produced by the Offshore Energy fleet in 2017 totalled 669,000 tons (2016: 790,000 tons). The reduction in emissions is wholly accounted for by the heavy transport vessel (HTV) fleet which accounted for 56% of the total emissions (2016: 63%). Despite a nearly flat vessel utilization rate in 2017 (69% versus 71% in 2016), a reduction in the number of operational vessels resulted in a decline of the HTV emissions. In 2017, two HTVs were taken out of service and two type II vessels were laid up for the majority of the year. Furthermore, the HTV Finesse was taken out of service in the first quarter of 2017 for conversion into a DP2 crane vessel, Bokalift 1. The Bokalift 1 came back into service early 2018. There were no other noteworthy developments within the Offshore fleet impacting fuel consumption and the associated emissions.

CO

2 (Metric Tons ‘000)

0.3

1,223 MT

99.7

Fleet (%)

Offices (%)

FLEET

OFFICES

CO

2017 *

CO

2016 *

2

2

MT (‘000)

MT (‘000)

FUEL HFO MT (‘000)

FUEL MGO MT (‘000)

ELECTRICITY KWh (million)

GAS Mj (million)

551 669

Dredging & Inland Infra

114 134

61 78

440 790

Offshore Energy Towage & Salvage

-

16

3

Offices

5

10

3

Total

248 772

140 448

–

– –

CO

MT (‘000)

3

1,223

1,249

2

* For the method used to convert fuel to CO 2

, see page 69 of this report.