Portsmouth Naval Shipyard Expansion Projects

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Portsmouth Naval Shipyard to begin $1.7B dry dock project. Here's what it will look like.​

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Super flood basin at dry dock 1 to be completed first which then allows the multi mission basin to be completed.
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Completed multi mission dry docks project which turns the super flood basin into two additional dry docks.
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2021

“Dignitaries are expected at Portsmouth Naval Shipyard Wednesday for the groundbreaking of a $1.7 billion project to construct a multi-mission dry dock.

Secretary of the Navy Carlos Del Toro will serve as the keynote speaker for the 10 a.m. event. U.S. senators and congressional representatives from both Maine and New Hampshire will be in attendance.

The construction project, which was awarded Aug. 13 to Omaha, Nebraska-based 381 Constructors, is expected to take seven years. It is part of the Navy's Shipyard Infrastructure Optimization Program. It will expand and reconfigure the shipyard’s Dry Dock 1 area, to increase the capacity to maintain, modernize, and repair the Navy's attack submarines, according to a statement released by the shipyard

SIOP is a joint effort between Naval Sea Systems Command, Naval Facilities Engineering Systems Command, and Navy Installations Command to recapitalize and modernize the infrastructure at the Navy's four public shipyards.……”

https://www.seacoastonline.com/stor...frastructure-optimization-program/5757693001/


Portsmouth Naval Shipyard has big plans for 2025 and beyond. Here are major projects.​


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“KITTERY, Maine — The seven-year $1.87 billion dry dock expansion at Portsmouth Naval Shipyard is about halfway to completion, an effort that kicked off with a September 2021 groundbreaking featuring Secretary of the NavyCarlos Del Toro.

The project is expanding the yard’s Dry Dock 1 area so the shipyard can hold five Los Angeles- and Virginia-class submarines at a time for repair, maintenance and modernization efforts. The nation’s oldest shipyard currently has the capability to hold three submarines in its three dry docks….”

“The entire dry dock expansion is expected to be completed by August 2028, on schedule….”

https://www.seacoastonline.com/stor...val-shipyard-major-upgrades-2025/76862483007/
 

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