Question: What did the Forum Cafeteria contain that were uniquely designed marine vessels?

Context paragraphs:
Marine chemist: A marine chemist is an environmental, occupational safety and health professional who is a trained professional who is responsible for ensuring that repair and construction of marine vessels can be made in safety whenever those repairs might result in fire, explosion, or exposure toxic vapors or chemicals.  By virtue of his or her training, experience, and education, the Marine Chemist is uniquely qualified as a specialist in confined space safety and atmospheric sampling or monitoring.

Oily water separator (marine): An oily water separator (OWS) (marine) is a piece of equipment specific to the shipping or marine industry.  It is used to separate oil and water mixtures into their separate components.  This page deals exclusively oily water separators aboard marine vessels.  They are found on board ships where they are used to separate oil from oily waste water such as bilge water before the waste water is discharged into the environment.  These discharges of waste water must comply with the requirements laid out in Marpol 73/78.  For information on more general oil water separators Oily Water Separators (general).

Bennett Offshore: Bennett Offshore, L.L.C., is an independent naval architecture, design and consulting firm founded in 1997 by William T. Bennett, Jr., to deliver engineering services to the offshore industry.  Bennett headquarters are located in Houston, Texas, and the company has an engineering office in New Orleans, Louisiana.  Bennett Offshore provides traditional naval architecture, structural, mechanical and electrical engineering as well as hydrodynamics and other marine- and offshore-related services.  In addition, the firm is involved in design, modification, and construction supervision of marine vessels, liftboats and other offshore mobile drilling and production units.  Bennett Offshore worked in collaboration with the Offshore Technology Development group of Keppel Offshore & Marine to design the ORCA series of self-propelled, self-elevating platforms.

Viking ships: Viking ships were marine vessels of unique design, built by the Vikings during the Viking Age.

Forum Cafeterias: The Forum Cafeteria was a chain of economical cafeteria-style restaurants which operated across the United States.  The company was founded around 1918 and had restaurants in the downtown areas of several major cities.  In the 1960s the company expanded its business concept to suburban areas, opening shopping center locations at Antioch Shopping Center, Kansas City, Missouri and the Dadeland Shopping Center southwest of Miami.

Gulf Island Fabrication: Gulf Island Fabrication is an American manufacturer of specialized structures and marine vessels used in the energy sector.  The company builds offshore oil and gas platforms, ships and also foundations for offshore wind turbines.  It also provides maintenance and marine repair services in-shop and out in the field.  The company has built some of the largest offshore platforms in the world.

Forum Cafeteria (Minneapolis): The Minneapolis Forum Cafeteria was located at 36 South 7th Street originally constructed in 1914 as the Saxe Theater, later the Strand Theater.  A 1930 reconstruction created a cafeteria with a stunning Art Deco interior of black onyx and pale green tiles, sconces, chandeliers, and mirrors with a Minnesota-themed motif: pine cones, waterfalls, and Viking ships.

Craft Identification Number: The Craft Identification Number (CIN) or Hull Identification Number (HIN), standardised as EN ISO 10087:2006, is a permanent unique fourteen-digit alphanumeric identifier issued to all marine vessels in Europe.  The numbering system is mandated by the European Recreational Craft Directive and descended from the American Ship Hull number system.  Larger vessels over 300 gross tonnes also receive a permanent international IMO ship identification number, and European vessels over 20 metres receive a permanent ENI number.

Common Marine Inspection Document: The Common Marine Inspection Document (CMID) (IMCA M 149) is a free to use marine inspection format provided by the International Marine Contractors Association for the inspection and audit of marine vessels involved in the offshore industry.  The inspection's purpose is to establish that a particular vessel is safe to work aboard, will not place anybody working on or around the vessel in danger and will not cause any harm to the environment.  The inspection also ensures that all mandatory certification for the vessel and its operations are up to date.

Marine surveyor: A Marine surveyor (including "Yacht & Small Craft Surveyor", "Hull & Machinery Surveyor" and/or "Cargo Surveyor") is a person who conducts inspections, surveys or examinations of marine vessels to assess, monitor and report on their condition and the products on them, as well as inspects damage caused to both vessels and cargo.  Marine surveyors also inspect equipment intended for new or existing vessels to ensure compliance with various standards or specifications.  Marine surveys typically include the structure, machinery and equipment (navigational, safety, radio, etc.) and general condition of a vessel and/or cargo.  It also includes judging materials on board and their condition.  Because certifications and subsequently payments are processed only after the surveyor has expressed his or her satisfaction, a marine surveyor holds a prestigious position and is held with much regard in the shipbuilding industry.  Marine Surveyors are highly qualified and technically sound and are usually selected after thorough evaluation procedures as vessels ranging from small ferries to enormous crude oil carriers and cruise liners are approved to sail into the high seas based purely on their judgement,competence and integrity.

Supporting paragraphs: Forum Cafeteria (Minneapolis) Viking ships
Answer: Viking ships