Abstract
Epidemics always accompanied humanity at all historic stages, that wielded major influence on development and demographical indices. Coronavirus infections with respiratory syndrome represented by epidemic foci appeared in human civilization and were identified as SARS and MERS from the beginning of the century. Newly coronavirus infection COVID-19 took the form of pandemic and made adjustments in various branches of activity coming under the scrutiny of specialists of many spheres of activity. The lecture showed some features of newly coronavirus infections, ways of spread and transfer of the virus. It was marked that seaport towns and closed premises with a large number of people on ships and civil and war ships are the most vulnerable places for the spread of COVID-19. Examples of transmitting the infection on civil and war ships as well as issues of restricting the infection and treatment of infected people in sea were described. Russian and foreign health organizations developed recommendations, governments of states designed instructions and other information materials on COVID-19 and marine sector for prevention of spread of newly coronavirus infection on civil and war ships. Throughout the year, the first experience of marine medicine was gained and it allowed to avoid a lot of tactical and clinical mistakes.