с частными ситуация не однозначная

Зависит от качества управления! Пелла и Зеленодольский ССЗ тоже наращивают объёмы производства и проходят модернизацию, будучи частными компаниями!

Для сравнения список государственных и частных судостроительных верфей США:

Government (Public) Shipyards
Boston Navy Yard, Charlestown, Massachusetts
Brooklyn Navy Yard, Brooklyn, New York
Charleston Naval Shipyard, Charleston, South Carolina
Mare Island Naval Shipyard, Vallejo, California
Marinette Marine, Wisconsin
Norfolk Naval Shipyard, Portsmouth, Virginia
Pearl Harbor Naval Shipyard, Pearl Harbor, Hawaii
Philadelphia Naval Shipyard, Philadelphia, Pennsylvania
Portsmouth Naval Shipyard, Kittery, Maine
Puget Sound Naval Shipyard, Bremerton, Washington
United States Coast Guard Yard, Curtis Bay, Baltimore, Maryland

Private sector shipyards
ADR Mare Island Shipyard, Vallejo Ca.
Aker Philadelphia Shipyard, Philadelphia, Pennsylvania
Alabama Drydock & Shipbuilding, Mobile, Alabama
American Shipbuilding, Cleveland, Ohio, Lorain, Ohio (1888–1995)
Atlantic Basin Iron Works, Brooklyn, New York
Austal USA, Mobile, Alabama
Avondale Shipyard, Westwego, Louisiana
BAE Systems Ship Repair, Norfolk, Virginia
Hans Ditlev Bendixsen, Fairhaven, California
Bethlehem Shipbuilding Corporation, Limited (BethShip) (1913–1964)
Fore River Shipyard, Quincy, Massachusetts (1901–1964)
"Victory Yard", Squantum, Massachusetts (1917–1919) The "Victory Yard" was constructed specifically for the building of destroyers for World War I, to free up the Fore River Yard for other vessels including the battlecruiser Lexington.
Bethlehem Sparrows Point Shipyard, Sparrows Point, Maryland (1914–1997)
BethShip San Francisco
Union Iron Works, San Francisco, California (1905–1941)
Alameda Works Shipyard, Alameda, California (1916–1956)
Bethlehem Shipyard (Southwest Marine Terminal at Berth 240), San Pedro, California (1940–1981)[63]
Bethlehem Wilmington, Wilmington, Delaware (1904–1925, 1941–1945)[64]
Bollinger Shipyards, Lockport, Louisiana
Leevac Shipyards, Jennings, Louisiana
Brown Shipbuilding, Houston, Texas
California Shipbuilding Corporation, Terminal Island, Los Angeles County, California
Chesapeake Shipbuilding, Salisbury, Maryland
Chester Shipbuilding, Chester, Pennsylvania
Commercial Iron Works, Portland, Oregon
Consolidated Steel Orange Shipyard, Orange, Texas
James O. Curtis, Medford, Massachusetts
Defoe Shipbuilding Company, Bay City, Michigan (1905–1975)
Delaware River Iron Ship Building and Engine Works, Chester, Pennsylvania
Detyens Shipyards, Charleston South Carolina,[65]
Dravo Corporation, Pittsburgh, Pennsylvania
Erie Shipbuilding LLC, Erie, Pennsylvania
Federal Shipbuilding & Drydock, Newark, New Jersey (1917–1949)
General Dynamics, Quincy, Massachusetts
Bath Iron Works, Bath, Maine
Electric Boat Corporation, Groton, Connecticut, Quonset Point, Rhode Island
National Steel and Shipbuilding Company, San Diego, California
General Engineering & Dry Dock Company, Alameda, California
George Lawley & Sons, Neponset, Massachusetts
Gulf Shipbuilding, Chickasaw, Alabama
Henry B. Nevins, City Island, New York
Higgins, New Orleans, Louisiana
Ingalls Shipbuilding, Pascagoula, Mississippi
Jakobson Shipyard, Oyster Bay, Long Island, New York
Jeffersonville Boat & Machine, Jeffersonville, Indiana
John H. Mathis & Company, Camden, New Jersey
John Roach & Sons, Chester, Pennsylvania and New York City
Kaiser Shipyards
2 yards at Vancouver, Washington
1 yard at Oregon Shipbuilding Corporation, Portland, Oregon
4 yards at Richmond Shipyards, Richmond, California
Lake Washington Shipyard, Houghton, Washington
Lawrence & Foulks, New York
Lockheed Shipbuilding and Construction Company, Seattle, Washington formerly Puget Sound Bridge and Dredging Company
Los Angeles Shipbuilding and Drydock, Los Angeles, California
Marinship – Bechtel Shipyards, Sausalito, California
Maryland Drydock, Baltimore, Maryland
Merchant Shipbuilding Corporation, Chester, Pennsylvania
Moore Dry Dock Company, Oakland, California
Morse Dry Dock & Repair Company, Brooklyn, New York
Neafie & Levy, Philadelphia, Pennsylvania
New England Shipbuilding Corporation, South Portland, Maine
Newport News Shipbuilding & Drydock, Newport News, Virginia
New York Shipbuilding Corporation (New York Ship), Camden, New Jersey (1899–1967)
Oregon Shipbuilding Corporation, Portland, Oregon, part of the Kaiser Shipyards
Pennellville Historic District
Pusey and Jones, Wilmington, Delaware
Reaney, Son & Archbold, Chester, Pennsylvania
Richmond Shipyards, Richmond, California, part of the Kaiser Shipyards
SAFE Boats International LLC, Bremerton, Washington
Seattle-Tacoma Shipbuilding, Seattle, Washington
Skinner & Eddy Corporation, Seattle, Washington
Sun Shipbuilding and Drydock Company, Chester, Pennsylvania
Tampa Shipbuilding, Tampa, Florida
T. J. Southard (Richmond, Maine)
Vigor Industrial, Washington, Oregon, and Alaska
VT Halter Marine, Pascagoula, Mississippi
W. A. Robinson, Ipswich, Massachusetts
Western Pipe & Steel, San Francisco, California
William Cramp and Sons Shipbuilding Company, Philadelphia, Pennsylvania
William H. Webb, New York City
Winslow Marine Railway & Shipbuilding, Winslow, Washington, Seattle, Washington
Zidell Marine – Portland, Oregon


Почуствуй, как говорится, разницу.