USNS John Glenn and USNS Montford Point

USNS John Glenn Landing Craft Air Cushion (LCAC) vessel lanes
  • Customer: Naval Sea Systems Command
  • Industry: Defense
  • Type: Repair & Refit
  • Year: 2014

Vigor built and installed add-on modules on the Mobile Landing Platform (MLP) Class vessels USNS Montford Point (MLP 1) and USNS John Glenn (MLP 2) for Naval Sea Systems Command.

The Mobile Landing Platform (MLP) Class vessels are highly flexible platforms that can be used across a broad range of military operations including humanitarian support and traditional military missions.  Acting as a mobile seabase, MLPs can transfer vehicles and equipment at-sea and then interface with surface connectors to deliver the vehicles and equipment ashore.

MLP 1 and 2 were built by General Dynamics National Steel and Shipbuilding Company (NASSCO) based on an existing commercial design, the Alaska class crude oil carrier.  Vigor was then contracted to build and install the Core Capabilities Set (CCS) add-on modules to support a vehicle staging area, vehicle transfer ramp, large mooring fenders and up to three Landing Craft Air Cushion (LCAC) vessel lanes.  These are the only two ships in the NAVSEA fleet that will have this Core Capabilities Set.

Vigor received a base design from NAVSEA and Vigor’s engineering team developed detailed production drawings together with the naval architecture and marine engineering firm Bruce S. Rosenblatt & Associates.  This partnership between the design architect, the shipbuilder and the customer ensured that the right balance between cost and function was achieved and that potential problems were identified before production began.

Once in production, Vigor Marine, Vigor’s ship repair division, teamed up with Vigor Fab, the new-construction arm of Vigor, to leverage the capabilities of each subsidiary to deliver a high quality product.   The majority of the steel structure (raised deck assemblies and lane barriers) was built by Vigor Fab in Vigor’s fabrication bays and buildway in Portland.   Vigor Marine outfitted, painted, installed and tested the add-on modules on the vessel.

The construction and installation of the add-on modules on the two vessels was a big team effort – by Vigor’s shipbuilding and ship repair teams as well as by NAVSEA and Rosenblatt.  Lessons learned from building the first MLP were put into place on the second MLP which led to an even more efficient process and faster production time.

See a time-lapse video of the Montford Point and John Glenn in action:

Images from this Project

Click images to enlarge.

USNS John Glenn Landing Craft Air Cushion (LCAC) vessel lanes
USNS John Glenn vehicle staging area
Side view of USNS John Glenn