Abstract
The article deals with the sui generis nature of maritime labour, based on the analysis of the seafarer category, and bases on the need to improve the current labour and social security legal regime in the Cuban legal system, based in the recognition of the gaps in the current legislation in this regard. In this sense, the study of Maritime Labour Convention of 2006, not ratified by Cuba, is deepened and it is concluded that there are no adaptations to the specific and extraordinary nature of the seafarer category, or special regime on social security.