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206 Third IMO GHG Study 2014
Table 13 – Analysis of 2011 and 2012 observed cargo-carrying fleet
% IHSF coverage Qualitative
field quality
Field 2007 2008 2009 2010 2011 2012
Statcode3 100% 100% 100% 100% 100% 100% Representative
Statcode5 100% 100% 100% 100% 100% 100% Representative
gt 100% 100% 100% 100% 100% 100% Representative
dwt 99.1% 98.9% 98.7% 98.3% 98.0% 98.1% Representative
length 30.5% 31.9% 38.9% 40.6% 39.7% 43.2% Speculative
beam 77.6% 79.8% 86.6% 86.6% 88.9% 93.5% Speculative
max draught 99.0% 98.7% 98.7% 98.6% 98.3% 98.5% Representative
ship speed 90.2% 88.1% 89.1% 89.6% 87.7% 93.3% Representative
installed ME power 99.3% 99.2% 99.3% 99.4% 99.0% 99.1% Representative
RPM 55.6% 61.9% 79.9% 90.0% 90.3% 91.6% Speculative
ME consumption 35.0% 32.9% 31.0% 28.8% 27.1% 24.7% Speculative
total consumption 33.0% 31.0% 28.9% 26.5% 24.8% 22.3% Speculative
propulsion type 100% 100% 100% 100% 100% 99.1% Representative
number of screws 100% 100% 100% 100% 100% 100% Representative
date of build 100% 100% 100% 100% 100% 100% Representative
keel laid date na na na na na 91.9% Representative
An evaluation of the cargo capacity fields was also conducted for the 2011 and 2012 IHSF data sets. TEU
capacity coverage for the container subclass was nearly 100% for both years, but reefer slot capacity coverage
was less than 1% in both years. There was 100% coverage for cbm capacity for the liquefied gas carrier
subclass in both years. There was over 90% coverage for vehicle capacity for auto carriers (pure car carriers)
in both years, but there was less than 55% coverage for vehicle capacity for all the rest of the ro-ro cargo
subclass.
Noon report data for activity and fuel consumption quality assurance
Description of noon report data
Noon reports are records kept by the crew of a ship with the information used for a variety of management
processes both on board and ashore. There is no standard report format, but most operators collect very
similar data, and in most cases the reporting frequency (every day at noon when at sea) is the same. In some
cases, per-voyage aggregate data only is available. The data used in this report, and the ship types that it
includes, have been generously donated by the operators listed in Table 14. The composition of the fleets
used (number of ships by ship type category), after filtering out ships where noon report coverage over the
entire quarter is incomplete, is listed in Table 15. The total number of observations is approximately 60,000
days’ operation.
Table 14 – List of operators and their fleets (number of ships) used in this analysis
Operator 2007 2008 2009 2010 2011 2012
Gearbulk 0 0 0 0 0 63
V.Ships 2 2 5 11 14 42
Shell 0 0 0 0 61 0
Carbon Positive 16 18 18 26 46 65
Totals 18 20 23 37 121 170