Page 64 - Inpiantistica industriale

SHIPBUILDING

new lubrication configurations based on grease:
removing direct oil-to-water interfaces, these in-
novative-patented solutions combine the minimum
environmental impact with the most efficient lubri-
cants management.

Tunnel Thrusters
Fincantieri Marine Systems developed an innovati-
ve family of tunnel thrusters fully dedicated to the
cruise segment by establishing a new state of the
art in terms of comfort, reliability, environmental su-
stainability and energy efficiency. A leading mariti-
me classification society validated and certified the
results of the hydrodynamic optimization, confir-
ming that Fincantieri thrusters reach the lowest le-
vels of vibrations and noise available on the market,
capable of satisfying even the needs of the most
demanding segments. A cutting edge patented sy-
stem of tunnel closure elements (thruster shutters)
ensures a significant reduction in terms of hull drag
and total required propulsion power, with a fuel sa-
ving between 5% and 10%.

This innovative solution consists in high transver-
sal thrust performances (optimized hydrodynamic
flow), mechanical protection of propeller (assembly
designed to act as a grid) and compactness.
The adopted design solution paid the utmost at-
tention to maintainability criteria, allowing to mini-
mize the time of dry-dock operations and to carry
out maintenance with floating ship. The reduced
ted drag increase. interface guarantees easy arrangements on new
projects and retrofit on existing tunnels.
FINCANTIERI stern-to-bow design minimizes ship
drag in all operating conditions. Hull shapes are re-
stored by an hydrodynamic shield in way of fin me- Steam turbines – HRS
chanism, which allows the water flow to overpass Fincantieri Marine Systems fully designs, deve-
larger box opening, with remaining recess covered lops and produces steam turbines combining
by fin own leading edge. This peculiar configuration
provides an average 3% propulsion power reduc-
tion comparing to the opposite opening mode.
Furthermore, stern-to-bow design results to be
Owners first choice when ship operational safety
is concerned: thanks to its specific configuration,
in case of fin collision with foreign object the risk of
hull shell damage is minimized thanks to sternward
recovery box, which represents the safest and
more reliable natural safeguard against any colli-
sion-related compartment flooding risk.
In addition, FINCANTIERI developed and patented

60 60 Impiantistica Italiana - Maggio-Giugno 2021