Standards of Training, Certification, and Watchkeeping (STCW) Basic Training (BT) is mandatory for every seafarer before starting to work on board merchant ships. The knowledge, attitude, and behaviour (KAB) theory explains that knowledge enhances one’s attitude, thus leading to improved behaviour. Accordingly, this study determined the effects of BT on seafarers’ shipboard safety KAB. The process commenced by ascertaining whether the BT course offered in the Maritime Institutes was on par with BT contents provided by the International Maritime Organisation (IMO). For data collection and filtration purposes, the factors, filtering elements, and filtered model (FFF model) were utilised to measure safety education and KAB. Following this, a measurable questionnaire was developed for this particular study survey. The data collected were then analysed by using the Principal Component Analysis (PCA) and Confirmatory Factor Analysis (CFA), which involved the use of SPSS and AMOS SPSS. Essentially, data obtained from the respondents successfully established the impacts of BT on the KAB, which revealed its role in improving the seafarers’ KAB. Therefore, the factors identified in this study are expected to be utilised in maritime institutions as BT syllabus incorporates domains aimed to instil the right attitudes among seafarers.