Biosecurity New Zealand Discussion/Technical/Information Paper template

The forms provided details on the number of ballast tanks and tank capacity of the vessel, whether the vessel intends to discharge any ballast water in NZ and if so, the ballast water management method to be undertaken, volumes to be exchanged, and original source of the ballast water. [...] The visual comparison of the data showed a rapid elevation in vessel traffic in 2016 for the two databases, MPI and Lloyd’s, accompanied by a rise in the number of bulk/oil vessels and a fall in the number of cargo carriers. [...] Based on the exploratory data analysis, the number of vessel traffic in both data sets indicated an increase in the number of vessels arriving in New Zealand in the last decade. [...] This increases the likelihood of errors in the supplied data in both stages of entry by the vessel Master and when the information is recoded to a secondary data management system. [...] Comparison of the number of visits by vessel type for each port (MPI 2012–2016 data) 5.4 Comparing and matching the records The initial analysis assessed the similarities and differences in the MPI and Lloyd’s datasets.