This release contains data of recruits of the Comportementboeken of the Maritime Institute Amsterdam (Kweekschool voor de Zeevaart) for the period 1792 – 1943. It consists of a main body, that derives from the personal pages that were kept for every student in the institute. To that the letters of application were added. Furthermore the data are linked to conscription records, and the places and occupations in the data were standardized. The dataset contains demographic indicators such as: height, parental mortality, religion, smallpox vaccination, place of birth and socioeconomic background.