Collaboration skills, multicultural awareness, and intercultural sensitivity are essential to the careers of maritime business professionals. The self-development of a multiculturally conscious personality contributes to ensuring safety in the maritime business. Researchers point out that more attention in the maritime industry should be paid to the employee’s personality than to increasing automation of shipping processes. The heterogeneity of employee teams at the national and religious levels is associated with the problem of increased psychoemotional stress. Instead of emphasizing the teaching of intercultural communication rules, it is appropriate to enable future maritime business professionals to cultivate values, to realize their cognitive interests, to understand that the culture or religion of their colleagues is existentially dear to them, and to be open to a culture of dialogue. Therefore, the article presents more relevant methodological prerequisites for the development of multicultural self-awareness and religious tolerance in the spirit of Neo-Thomism, theistic humanism, personalism, and constructivism.