Z-Drive LNG electric

Veth LNG-Electrical Combination of liquefied natural gas and electrical propulsion

LNG powered Greenstream Tanker with LNG-Electrical Veth Z-drives artist impression, courtesy of Peters Shipyards

Sustainability is becoming more and more important for the maritime sector. Liquefied Natural Gas is the most interesting possibility to make shipping cleaner. Veth Propulsion has put numerous initiatives in place to become as ‘green’ as possible, such as sailing LNG-Electric.

Veth Propulsion supplies the electrically driven Z-drives to the first 100%-LNG driven inland marine vessel.

LNG as fuel There is considerable international pressure on reducing the emissions from ships. LNG is safe, clean, economical and available. Burning LNG results in a significant reduction of harmful emissions, even without any treatment of exhaust gasses, including CO2 reduction as an extra benefit in relation to diesel with SCRT catalyst.

www.veth.net

Safe Fluid LNG is less inflammable than diesel (flash point diesel: 250°C, flash point LNG: 1.100°C), is lighter than air and hardly a healthy hazard.

Available The world supply of gas is much bigger than oil.

Clean Reduction LNG compared to diesel (CCNR2).

NOx

CO2

Roet

SO2

>80%

>20%

>90%

>90%

After a calamity, LNG causes no residual damage to the immediate area due to evaporation.

Why LNG-electric propulsion?

LNG generator sets combined with rudder propellers lead to an extra efficiency improvement compared to a conventional propulsion system.

Ships with LNG-Electric propulsion have multiple generator sets on-board, which together provide the full electric propulsion power supply.

The benefits of more generator sets are: • Reducing fuel consumption by switching during low load • Available for other major consumers on-board, such as cargo pumps • Increasing the reliability of the system by redundancy Why LNG instead of diesel?

• Cleaner, safer and cheaper

• Reduced emission of harmful substances - Meets international regulations (2016): Euro 6-emission requirements - Save on dock charges • Noise reduction of 4-5 dB • Less maintenance because of lower engine load • Doubles the change interval of the lubrication oil Differences between LNG and dual-fuel • An 100%-LNG-engine is cleaner and improves emissions • An LNG-engine has a lower compression ratio than a die sel engine. A correct compression ratio is important to prevent knocking. Therefore Veth Propulsion chooses a 100%-LNG-engine, according to the lean burn principle • With an LNG-engine the total amount of costs are lower, because adding a more expensive fuel is not necessary

Basic engine Type

Rating (kWe) (50 Hz) (60 Hz)

Scania

SGI-16M

250

285

Scania

SGI-12M

190

225

Sisu

SGI-7M

100

110

Sisu

NG-7M

50

55

The benefits of a Veth Z-drive The use of steering propellers allows improved stern lift and a free flow to the propellers, which results in a gain in efficiency. The absence of tunnel constructions means a reduction in hull resistance compared to a conventional vessel.

A clear advantage for dry cargo vessels is that the entire hold is now available for cargo.

Veth Propulsion is the thruster manufacturer that stands for quality, service, innovation and sustainability. Your sailing profile and specific needs form the basis for our bespoke solutions including rudder propellers, bow thrusters, engines and generator sets. Working together with you. ‘Inspired by water, inspired by you’.

Griendweg 1, 3356 LN Papendrecht, The Netherlands P.O. Box 53, 3350 AB Papendrecht, The Netherlands Tel. +3178 615 22 66, E-mail: info@veth.net