Companies authorized to act on behalf of RBNA
RBNA works with recognized service providers to perform specialized inspections.
Specialized service providers collaborate to guarantee the Total Quality of the classed vessels.
List of Authorized Companies
| Company | Service | Location | Contact |
| Tecnoend | Hull Gauging | São Gonçalo | + 55 21 2628 1729 |
| MGM | Hull Gauging | São Gonçalo | + 55 21 2628 4040 |
| Ship Tec | Hull Gauging | São Gonçalo | + 55 21 2628 7045 |
| Albacora | Hull Gauging | São Gonçalo | + 55 21 2628 5746 |
| Nova Scan | Hull Gauging | Niterói | + 55 21 8567 5900 |
| Gaender | Hull Gauging | Niterói | + 55 21 2628 4071 |
| Top End | Hull Gauging | Niterói | + 55 21 7813 6590 |
| Braccon | Hull Gauging | Manaus | + 55 92 3233 9899 |
| OffShore | Hull Gauging | Macaé | + 55 22 2273 5733 |
| In Shore | Hull Gauging | Rio Grande | + 55 53 9996 6723 |
| . | . | . | . |
| Master Sub | Underwater Survey | São Gonçalo | + 55 21 9435 9668 |
| . | . | . | . |
| Belga Marine | Radio Technician | Rio de Janeiro | + 55 21 2253 7171 |
| Survey Marine | Radio Technician | Rio de Janeiro | + 55 21 2253 7032 |