Communication is represented in all spheres in life and there isn't still just one definition accepted. It is beginnings date back to Neanderthal, and the earliest recorded information about discussions on communication was during Plato. There are many types of communication and several communication styles. For communication to be effective within an organization important role has the manager and participation off all employees as well as knowledge of diversity (religion, nationality, culture) among employees. Due to growth and development in organizations, especially by increasing communication can often lead to conflict. There are conflicts between individuals and conflicts between groups. The conflict doesn't necessary have to be negative, it can have positive results. There are five styles of conflict management. Conflicts on the ship can be individual, organizational and collective. To choose the most convenient way of dealing with conflicts in certain situations it's important to know the situation of conflict and the time of occurrence. Damage that may occur when an conflict isn't prevented on time or solved on time is loneliness, stress, bullying – mobbing and increased sick leave and absence from work.