This work is based on a Search conducted by IPSEMA and in course of publication. It was considered the accident trend of seafarers in the period 2004-2011, based on INAIL data. The category of vessels most affected by the accident phenomenon is passenger transport (about half of the cases), followed by cargo ships (20.2%) and fishing boats (16.0%). The average age of the injured is equal to 41.6 years. Further evidence relating to the qualification of seafarers injured (mostly "sailor", "hub" and "small") and nationality (94% of Italians), while the main mechanism of injury on board is the trauma that affects mostly the arts. In most cases, finally, it came to accidents that occurred during the navigation.