Sailboat.java

@Entity
public class Sailboat
{
    @Identifier
    @Attribute
    protected String registrationCode;

    @Attribute
    protected String name;

    @Relationship(type = RelationshipType.ONE_TO_MANY,
            inverseClass = CrewMember.class,
            inverse = "sailboat",
            cascadePolicy = CascadePolicy.ALL,
            fetchPolicy = FetchPolicy.LAZY)
    protected List<CrewMember> crew;

    // getters and setters
}