Methods of designing gas carriers based on their specifics based on foreign experience are summarized. The characteristics of the types of gas carriers and their architectural features are given, the principles of choosing the main dimensions and economic justification are analyzed. Hull structures and designs of cargo tanks are considered, calculations of their strength are given. Ship systems of gas carriers, designs of cargo tank supports, thermal insulation, secondary barriers are described. Designed for engineering and technical workers of the shipbuilding industry, navy workers, as well as students of shipbuilding specialties.