Maritime safety and foreign language competence are complex and interrelated. The study focuses on the empirical evaluation of the integration of the module "Visual and Sound Signalling" into the course "Maritime English" for specialists in navigation and Ship Handling in order to improve their professional competence related to the requirements of the International Regulations for the Prevention of Collisions at Sea (COLREG-72). The content of the e-course is designed to identify topics that will contribute to the reduction of maritime safety issues. This article presents the content of the e-course under the educational and professional programme "Navigation and Ship Handling" aimed at developing foreign language communicative competence. The article provides key learning objectives and outcomes; a summary of the content of individual parts, as well as the structure of classes in accordance with communicative and blended learning approaches. The effectiveness of the course has been verified by both qualitative and quantitative indicators, which indicates that this teaching concept is viable for further development. The findings of this article can be useful for teachers of maritime English and will help to teach safety issues alongside language teaching in accordance with the requirements of STCW-72 and Model Course 3.17 Maritime English.