I am doing a research for school and need a average of wages and / or employment outlook for the next 10 years

Question

Outlook for the water transportation employees, Push boat captains, deckhands and engineers.

Answer 1

You'll have to do some digging, but the answers are most likely here:
Department of Labor
Bureau of Labor Statistics
Employment Projections
http://www.bls.gov/emp/home.htm

The Office of Occupational Statistics and Employment Projections develops information about the labor market for the Nation as a whole for 10 years in the future.

Career Outlook Information http://www.bls.gov/emp/home.htm#outlook