The SHiP-network aims to study in a comparative fashion the dynamics of mortality change in high level disease environments in port cities across Europe for the period 1850-1930. An important step towards comparative research is the development of a joint international historical coding system for causes of death. The SHiP historical cause-of-death coding system allow the incorporation of historical designations in such a way that this information will be preserved for analysis. In the proposed session the ICD10h coding system is tested for infant mortality in several cities in Europe, such as Copenhagen, Rostock, Sundsvall, Trondheim, Ipswich, Palma and Amsterdam.