Harbor Tug Services - Guam Option 4 Inactive Notice ID:N32205-MS-PM4-20-024 See Market Survey Attached. Department/Ind.Agency Subtier Office DEPT OF DEFENSE DEPT OF THE NAVY MSC NORFOLK NAICS 488330 - Navigational Services to Shipping PSC MARINE CHARTER FOR THINGS Data sourced from SAM.gov. View Official Posting »