24 February 2015
24 February 2015
Ferry operator, Ballerina, has introduced a new, electrically propelled passenger ferry built in composite material, that runs smoothly, comfortably and with essentially none of the noise that accompanies combustion-engined vessels.
DIAB explains that silent, clean and cost-effective operations are now key priorities for the marine transportation industry. Driven by ever tighter environmental regulations, the civil marine industry aims to reduce both emissions and noise nuisance while increasing efficiency. One interesting area is electric propulsion and many designers are integrating new concepts in ship architecture with cutting-edge battery technologies.
Ballerina, based in Stockholm, Sweden, recently introduced its first battery-powered boat featuring a high-tech marine battery system from Saft. The boat, titled M/S Sjövägen, carries foot passengers and cyclists between 10 stops on a 50-minute route of the waterways of Stockholm. It operates throughout the year, completing eight round trips per day. The batteries are fully charged during the ferry’s overnight stay in the harbour with two partial charging sessions during the course of the day.
This vessel was developed, designed and produced by Faaborg Vaerft together with Principia North A/S and Wilhelmsen Technical Solution and built in DIAB’s Divinycell H. “We use sandwich composite mainly for the hull, topsides and wheelhouse”, says Jan Ulrich Mortensen, Managing Director at Faaborg Vaerft. It is a great solution due to its strength, noise reduction and isolation properties. M/S Sjövägen is ice-reinforced, equipped with double propeller system, 2 x 160 kW electrical engines for propulsion, 500 kWh battery bank, electrohydraulic steering system, electrical bow thruster and communication and navigation equipment. It is designed for two-men operation and carries up to 150 people, 15 bikes, six wheelchairs and eight strollers.
Preliminary tests have demonstrated that the tensile strength of composite rebar can be increased by 32%, and bending strength by 29%, by introducing only 0.05 wt% of OCSiAl’s TUBALL nanotubes into the resin.
The JEC World 2018 Innovation Awards ceremony took place on 7 March, opened by a presentation by Yves Rossy, aircraft pilot and inventor of the first jet-powered wingpack.
VDL Bus & Coach's new Citea buses incorporate multiple lightweight composite components made by applying a foaming resin formulation supplied by Büfa based on resin from Aliancys.