Third IMO Greenhouse Gas Study 2014

70 Third IMO GHG Study 2014
Figure 51: Comparison of at-sea days and average ship speed, calculated using both the bottom-up model
output (y-axis) and noon report data (x-axis) (2009)
Fleet specifications and model assumptions quality assurance
Fleet specifications were based on the IHS vessel characteristics database, which was used in the following
ways:
• identifying the various vessel types using Statcode3 and Statcode5;
• counts of vessels within the various vessel types making up the world fleet;