Mare Island Dry Dock, LLC is a privately-owned company with over 60 years of cumulative leadership experience in the shipyard and ship repair industry.



We are committed to being an environmentally responsible business.

We conduct our operations in an environmentally sound manner and we strive to minimize the impacts of our operations on land, air, and water.



We promote safe working habits, safe conditions and a safe environment.

This is accomplished through the implementation of our safety program which outlines policies and procedures regarding health and safety.



Our goal is to provide excellence to the maritime industry, 24/7 year round.

We strive for excellence!

Mare Island Dry Dock, LLC

We Provide

innovative solutions

We serve an impressive list of long-term clients with expertise in multiple crafts, recognized as one of the nations leading shipyards.

"Quality means doing it right when no one is looking."
-Henry Ford
Ford Motor Company
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We have a long history of service & repair to the maritime industry, both government and commercially-owned vessels.

"Welcome to Vallejo!"

Timelapse video of the USS Frank Cable entering the bay and transiting to Dry Dock 2
Video courtesy of MC2 (SW/AW) Kaitlyn E. Eads


Dry Docks

Concrete graving docks that can accommodate ships under fully loaded conditions.

  • Dry Dock 2
    720 feet long
    98 feet wide
  • Dry Dock 3
    680 feet long
    90.5 feet wide

Lay Berthing

Three secure berthing options:

  • Berth 12 – 650 feet
    Mooring up to 950 feet
  • Berth 13 – 400 feet
    Mooring up to 660 feet
  • Berth 14 – 200 feet
    Mooring up to 260 feet

Crane Service

  • Crane B-1
    Certified at 67,000 lbs (33.5 tons)
  • Crane D-7
    Certified at 268,000 lbs (134 tons)
  • Crane D-3
    Certified at 56,000 lbs (28 tons)
  • Grove 165-ton Rough Terrain

Secretary Del Toro Tours Historic West Coast Facility,Explores Ways to Increase Shipyard Capacity in the Pacific

Secretary Del Toro, Rep. John Garamendi & Richard Palmer, MIDD VP of Operations Photos By Chief Petty Officer Shannon Renfroe VALLEJO, CA, UNITED STATES  Office of the Secretary of the Navy

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Mare Island Dry Dock, LLC October 3, 2023

Heavy Icebreaker Polar Star Returns to U.S. After 147-Day Antarctic Deployment 

From: SeapowerMagazine.org ALAMEDA, Calif. — The 140-member crew of U.S. Coast Guard Cutter Polar Star (WAGB 10) returned to the United States and entered dry dock Friday after completing a

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Mare Island Dry Dock, LLC April 11, 2022

Garamendi, Mare Island Dry Dock Announce Historic Investment into Shipyard

March 23, 2022 Press Release VALLEJO, CA—Today, Congressman John Garamendi (D-CA) hosted a press conference with Mare Island Dry Dock (MDD) and several local elected officials to announce a historic 13

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Mare Island Dry Dock, LLC March 23, 2022