America's Flagship: SS United States: Detailed information on the ship, passengers and crew, fun stuff, photo galleries, and links.
Caronia (II) Time-Line Project: Charting the day to day position of Cunard's "Green Goddess" the world famous cruise liner RMS Caronia.
Dave Lee's Queen Mary Photo Page: Photographs of the Queen Mary berthed in retirement in Long Beach, California.
Early 20th Century Ocean Liners: Links to information about several German ships launched prior to the First World War.
Empress of Asia: Details on the ship, passengers and crew including photos and information of actions during World Wars I and II.
Empress of Scotland: An illustrated history of the Canadian Pacific ship in operation 1930-1960. Provides narrative timeline, photographs, and statistics and deck plans,
Great Ships: The Ocean liner postcard and ephemera collection of Jeff Newman. Features images and histories of such lines as Canadian Pacific, Cunard, Hapag, NDL P&O and White Star. Many hundreds of ships are documented.
Hospital Ship Britannic: Site devoted to the short career and mysterious demise of the Titanic's sister ship. Includes various maps, photographs, and facts and figures, a compilation of memorials, and message board.
Infography about the History of Ocean Liners: Sources recommended by a professor who specializes in the study of ocean liners.
Liners.dk: Database of vessels with histories and images.
LostLiners: Vessels with descriptions and history.
MaritimeMatters: Ocean liner and cruise ship history and news; includes links to ship cams, steamship line histories, preservation and restoration resources, and maritime museums.
Monsters of the Sea: The Great Ocean Liners of Time: A site dedicated to all the ocean liners of the past with, summaries of careers and pictures.
Oceania: Databases with comprehensive information and images.
PBS Online - Lost Liners: Titanic, Lusitania, Empress of Ireland, Britannic, Andrea Doria.
Queen Mary: A visitor's guide from About.com, including an interview with the ship's historian about the steamer's restoration.
RMS Majestic: The history of the second White Star Line Majestic. Also known as The Bismarch and trainee ship HMS Caledonia. Includes Commander Peter Vaughan's autograph book.
RMS Mauretania: History of one of the world's first great ocean liners, built in the early 1900's.
RMS Olympic: The Ship Magnificent: Information regarding the White Star Line's lesser-known sistership to Titanic. Contains online forums, photograph galleries, articles, and deck plans.
RMS Queen Mary: Historic ocean liner built in 1936, now berthed in California serving as a tourist attraction - hotel, restaurants, tours, special events, meetings, etc.
Royal Regals - A History of Ocean Liners: A look back at the great ocean liners of the 20th century.
S.S. United States: History, recollections, photographs.
Ships of the Chandris Lines: Comprehensive site detailing the history of the Chandris Line and their ships; Australis, Britains, Ellinis etc. Also a history of the Matson Lines featuring the liners Malolo, Monterey, Mariposa and Lurline.
SS Emerald Seas and SS Azure Seas: General information and photo galleries.
SS United States: Site dedicated to "America's greatest ocean liner", currently berthed in Philadelphia. Historical data and info about the SS United States Foundation.
SS United States Conservancy: Provides history with photos and stories through the oral history project, audio-visual archives and a passenger list database project.
SS United States Foundation: Non-profit organization devoted to the preservation and restoration of the ocean liner. Information about Foundation activities; photographs and articles about the ship with stories from passengers; event calendar; directory of local chapters.
The Great Ocean Liners: Nice site on the great ocean lines from the 1830's to the 1960's.
The Late Great Ocean Liners: An on-line encyclopedia of passenger shipping, particularly in the North Atlantic, including numerous hyperlinks.
The Olympic Class Liners: This is the definitive research site on the Olympic class liners from the White Star Line.