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47
SEA
-4
.
8
%
ENERGY CONSUMPTION
of
technical solutions
for reducing
consumption and
ship efficiency
performancemanagement
. Monitoring
of environmental performance is
conducted thanks to the use of
business intelligence software, which
enables the analysis of detailed
comparative data regarding shipboard
energy consumption, compliance
with optimum speed for each leg of
the cruise as well as with scheduled
departure and arrival times in the
different ports, and optimization
of use of generators and auxiliary
engines. The system is engineered to
minimize deviations from the optimal
energy consumption profile and to
identify potential further energy-
saving measures
4
. Costa has included
in its
Environmental Plan
a series of
other shipboard and shoreside energy
efficiency projects and initiatives,
specifically linked to efforts to reach
Carnival Corporation’s target of a 25%
reduction in greenhouse gas (GHG)
emissions
5
.
In 2015 the Corporation carried out
pilot projects mainly on 4 ships with
specific measures (high efficiency
compressors and upgrade of the
automation programs) implemented
for optimization of air conditioning
systems, resulting in a massive 40%
reduction in electrical load (loads
not related to propulsion), without
affecting top-of-the-range comfort for
guests.
2015 also saw further work on the
project for installation on board of the
ECO Exhaust Gas Cleaning
(ECO-
EGCTM) system; this industry-leading
technology will set a new course in
environmental protection. It comprises
a filtering system and uses seawater to
remove more than 90% of pollutants
from the exhaust gases irrespective of
the ship’s operating condition – at sea,
during maneuvering and in port.
Together, these actions led to a 4.8%
year-on-year reduction in Costa’s
specific energy consumption in 2015
and an 18.8% decrease in four years,
exceeding the annual target.
4
This type of approach is in line with
Carnival Corporation’s internal system of
measurement for consistent comparison of
results from the different Operating Lines
based on three indicators: 1) Efficiency:
g/ALBNM, 2) Itinerary Distance: NM/Op
Days, 3) Consumption (derived from the
sum of the first two): MT/kALBD.
5
The target is a 25% reduction by 2020
when compared to emissions in 2005.
ECO EXHAUST
CLEANING
SYSTEM
46
.6
%
OF THE FLEET
7
FITTED ON