Feature 4
has developed a crane with, said Mr
Nilsson, many advantages. The price
of electric cranes is now the same as
an electro-hydraulic crane; the electric
crane sports a variable frequency drive
that allows it to alter the lifting speed
and a CC3000 control system that
calculates the weight of the load and
then uses the maximum speed for that
weight.
In addition hydraulic cranes are can
leak fluid if they are badly designed,
use poor quality components or they
are poorly maintained, there is no such
risk with the electric cranes which do
not use hydraulic fluid. In addition the
installation for the cranes is far simpler
as a technician must fit hydraulic
piping to carry the fluid to the crane. MacGregor’s electric crane mounted alogside a conventional hydraulic crane aboard
Wiring must be installed for the electric the Indotransflores.
cranes, but this can be carried out by a
comparatively unskilled worker as most and regularly the [electric] crane will electric crane, because it is smooth in
of the electrical system is provided by work for the lifetime of the ship.”. its operation and there is no oil and no
the manufacturer. He added that, “On the test ship c l e a n i n g .”
In fact, said Mr Nilsson: “I
version A
f the crane has been operating for two “It is,” said Mr Nilsson, “the crane of the
maintenance is carried out properly years and all the crew want to use the future for every size for all ships.” NA
Visit us at
BERGEN GROUP DREGGEN
The OSJ Conference,
London
February 17th-18th
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BERGEN GROUP DREGGEN
PO Box 3434
BERGEN GROUP DREGGEN is a worldwide supplier of cranes
N-5815 Bergen, Norway
to customers within the Offshore- and Marine Industries.
Tel +47 55 33 36 50
E-mail: dreggen@bergengroup.no
To contact, please visit www.bergengroup.no/dreggen
The Naval Architect February 2010 63
NA Feb10 - p62+p63.indd 63
BERGEN GROUP DREGGEN
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Visit us at The OSJ Conference,
London, February 17th-18th
BERGEN GROUP BERGEN GROUP DREGGENDREGGEN
PO Box 3434
BERGEN GROUP DREGGEN is a worldwide supplier of cranes
N-5815 Bergen, Norway
to customers within the Offshore- and Marine Industries.
Tel +47 55 33 36 50
E-mail: dreggen@bergengroup.no
To contact, please visit www.bergengroup.no/dreggen
version B
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