SeaPort NxG

SeaPort NxG (Next Generation) is the U.S. Navy's enterprise-wide multiple-award contract for professional support services, providing Navy and Marine Corps acquisition activities streamlined access to qualified contractors for technical, programmatic, logistical, and administrative support services.

What is SeaPort NxG?

SeaPort NxG is managed by the Naval Sea Systems Command (NAVSEA) and is the successor to SeaPort-e, which was one of the most widely used defense professional services vehicles for over a decade. Unlike government-wide vehicles like OASIS+, SeaPort NxG is limited to Department of the Navy activities, Navy program offices, commands, and Marine Corps units.

SeaPort NxG scope covers 23 service domains, including:

• Research, development, test, and evaluation (RDT&E)
• Engineering, technical, and programmatic support
• Fleet support, operation, and maintenance
• Software engineering and integration
• Ship inactivation and deactivation
• Information systems development
• Program management support
• Acquisition and financial management support
• Training support

The vehicle is organized by geographic zones corresponding to Navy regional concentration areas. Companies can hold awards in one or multiple zones, and task orders are competed within the applicable zone. Major zones include the National Capital Region, Southwest (San Diego), Northwest (Puget Sound), Southeast (Jacksonville, Norfolk), and others corresponding to major Navy concentrations.

SeaPort NxG is an indefinite delivery/indefinite quantity (IDIQ) vehicle with a substantial total ceiling, spanning professional support services that accompany every major Navy acquisition program, ship class, and Marine Corps system. Navy program managers who have been using SeaPort vehicles for decades often default to it for support services contracting, the vehicle is familiar, well-managed, and trusted within the Navy acquisition community.

Why SeaPort NxG matters for government contractors

For defense contractors focused on Navy programs, SeaPort NxG is often an essential vehicle. Navy program offices with established work under SeaPort will continue issuing task orders through it, companies without SeaPort awards that want to support Navy programs frequently must either pursue an award or partner as subcontractors under a prime holder. Given the Navy's extensive program portfolio (surface ships, submarines, aviation, systems commands), SeaPort NxG represents a substantial portion of Navy support services spending. Geographic zone strategy matters: companies concentrated in specific regions should pursue awards in those zones.

Example

A naval engineering firm holds SeaPort NxG awards in the National Capital Region and Southwest zones. The firm's primary customers are NAVSEA program offices at Washington Navy Yard and NAVAIR Southwest. Through its National Capital Region award, the firm provides ship systems engineering support to a destroyer program ($8.5M task order, 3 years). Through its Southwest award, the firm supports an amphibious ship class with maintenance planning and integrated logistics support ($12M, 5 years). Both task orders were competed among SeaPort NxG awardees in the applicable zone, a pool of 15-40 qualified firms per zone rather than open competition with hundreds of general services companies.

Frequently Asked Questions

Can non-Navy agencies use SeaPort NxG?

No. SeaPort NxG is a Navy-specific vehicle, only Department of the Navy (Navy and Marine Corps) acquisition activities can issue task orders. Other DoD components and civilian agencies use different vehicles. This contrasts with true GWACs like OASIS+ or Alliant 3, which are open to all federal agencies.

How does SeaPort NxG differ from OASIS+ for Navy requirements?

Both can cover professional services. OASIS+ is government-wide, has no Navy-specific focus, and is selected when agencies want access to the broadest possible competitive set. SeaPort NxG is Navy-specific, managed by Navy acquisition professionals, and the default vehicle for many Navy program offices because of the familiarity and established task order processes. Some Navy requirements go through both based on contracting officer preference.

What are the typical task order sizes under SeaPort NxG?

SeaPort NxG accommodates task orders across a wide range, from small, targeted studies (under $500K) to large, multi-year program support contracts ($50M+). Navy program offices use SeaPort for everything from quick-response technical studies to multi-year integrated logistics support contracts. The IDIQ structure accommodates this range.

Is there a small business component to SeaPort NxG?

SeaPort NxG includes provisions for small business set-aside task orders within zones. Navy contracting officers can restrict task order competition to small business SeaPort awardees in applicable zones. The Navy's SeaPort program has historically maintained significant small business participation.