Columbia subject headings:
Merchant marine--Military aspects--United States.
Military sealift--United States.
Shipbuilding industry--Military aspects--United States.
United States--Armed Forces--Transportation.
Harvard subject headings:
Merchant marine--Military aspects--United States.
Military sealift--United States.
Shipbuilding industry--Military aspects--United States.
United States--Armed Forces--Transportation.
Princeton subject headings: