Question: In what decade was the submarine named "San Juan" built?

Context paragraphs:
San Juan Hotel: The San Juan Hotel was built in 1885 at a cost of $150,000 by C.E Pierce.  The hotel was located in Orlando, Florida on the corner of Orange Avenue and Central Avenue.  Harry Beeman of Beeman Chewing Gum purchased the hotel in 1889 and added two additional stories.  The second floor was a favorite spot to view hangings at the Orange County Jail.  In the spring of 1922 the Turner Construction Company constructed an eight-story addition to the north of the 1885 5-story wing right next to the Beacham Theatre.  The San Juan hotel addition included restaurants, a barber shop, a laundromat, a pharmacy, as well as an office for Braxton Beacham.  The hotel first suffered hard times in the 1960s, and on September 7 1975 The San Juan Hotel closed.  But the 1976 It was opened again by a businessman but it didn't have enough clientele to stay open so it closed again in 1977.  In October 1978 The San Juan reopened as the Grand Central Hotel, a hotel for gay clientele.  But turns The San Juan was planning to be demolished holes were cut in the upper floors in preparation for demolition.  But around 5 or 6 AM on the morning of January 2 1979 The top 3 stories of the 1885 5-story wing were on fire, There was a water leak which flooded down into the shops on the 1st floor as well, The 1922 8-story wing suffered only smoke and water damage.  It is unknown to this day what started the fire.  The San Juan Hotel was demolished in August 1980.  The Orlando Historic Preservation Board were powerless to save it.  On October 1980, the Orlando Historic Preservation board created the Downtown Orlando Historic District.

San Juan de Dios Park: San Juan de Dios Park (in Spanish Colonias San Juan de Dios) (also known as "San Juan") is a zone situated in the south of Mexico City , in the delegation Tlalpan.  Has his origin in the Inland revenue of San Juan of God "The Big".  The zone is conformed by the colonies Hacienda de San Juan, Villa Lázaro Cárdenas,Ex Hacienda San Juan de Dios, Arboledas Del Sur, Hacienda de San Juan 2nd Section, Chimalli, The Colorines, Guadeloupe Tlalpan and the colony AMSA.  The zone houses big number of parks scattered in all his colonies as well as it also has commercial squares like the shopping centre Paseo Acoxpa.  Also the zone of San Juan basin with different urban services like transport, educational and of health.  San Juan of God is a residential zone mostly, has different private residentials and also private or private streets.  Many of his colonies also belong to the zone of Coapa.

San Juan Natatorium: The San Juan Natatorium is an Olympic-level aquatic sports facility located in San Juan, Puerto Rico.  Located in San Juan's Parque Central (Central Park) the natatorium is regarded as the most advanced natatorium in the Caribbean and 4th in the entire world as of October 2007.  The facility is used to host local and international events such as the 2nd A.S.U.A Pan American Masters Swimming Championship, as well as an important United States collegiate winter practice venue for many NCAA-affiliated colleges and universities.  San Juan's Mayor Jorge Santini opened the new roofed San Juan Natatorium, developed by San Juan Sports Director María Elena Batista on December 15, 2006.

USNS Mission San Juan (T-AO-126): SS "Mission San Juan was a Type T2-SE-A2 tanker built for the United States Maritime Commission during World War II.  After the war she was acquired by the United States Navy as USS "Mission San Juan.  Later the tanker transferred to the Military Sea Transportation Service as USNS "Mission San Juan".  She was a member of the "Mission Buenaventura"-class oiler and was named for Mission San Juan Bautista in San Juan Bautista, California.

Coast Guard Station San Juan: United States Coast Guard Station San Juan is a United States Coast Guard station established in 1993 and located in La Puntilla sector of historic Old San Juan, Puerto Rico.  Is one of two USCG Search and Rescue station in the Caribbean.  Duties at Coast Guard Station San Juan also include law enforcement, Federal On Scene Coordinator (FOSC), Area Maritime Security Coordinator (AMSC) and the Electronic Systems Support Detachment San Juan, Puerto Rico (ESDD SAN JUAN).  Coast Guard Station San Juan also conducts escorts of cruise ships and some Navy assets entering and departing San Juan Bay.

El Castillo (village): El Castillo is a village of about 1500 people situated on the southern bank of the Río San Juan (San Juan River) in southern Nicaragua.  It is one of 27 comarcas of the municipality of El Castillo, a subdivision of the Río San Juan Department.  The village is situated approximately 6 kilometers from the border with Costa Rica, at the "Raudal del Diablo" rapids of the San Juan River.  The site on which the village of El Castillo is built was initially established in 1673 as a Spanish fortification to defend against pirate attacks upon the city of Granada (which can be reached by navigating upstream from the Caribbean Sea along the San Juan River into Lake Nicaragua).  The settlement of El Castillo and its fortress continued to be strategically important to the Captaincy General of Guatemala until the late 18th century.

San Juan Capistrano, California: San Juan Capistrano ( ; ] ) is a city in Orange County, California, United States.  The current OMB metropolitan designation for San Juan Capistrano and the Orange County Area is "Santa Ana-Anaheim-Irvine, CA."  The population was 34,593 at the 2010 census, up from 33,826 at the 2000 census.  The city was created around Mission San Juan Capistrano, and many of the homes and strip malls resemble the Spanish architecture that composes the building.  It is home to the widest variety of homes in Orange County, including those built prior to 1900, in its central district (some being adobes from the 18th century).  San Juan Capistrano formerly hosted a population of cliff swallows that migrate each year from Argentina to the Mission San Juan Capistrano.

Church of San Juan Bautista, Dalcahue: The Church of San Juan Bautista de San Juan de Coquihuil (Spanish: "Iglesia de San Juan Bautista de San Juan de Coquihuil" ) is a Roman Catholic church located in the Chilean hamlet of San Juan, commune of Dalcahue in Chiloé Island.  Commonly referred to as «Church of San Juan» —Spanish: "Iglesia de San Juan" —, is within the Diocese of Ancud; its construction was finished around 1887.

TR-1700-class submarine: The TR-1700 ("Santa Cruz") is a class of diesel-electric patrol submarines built by Thyssen Nordseewerke for the Argentine Navy in the 1980s.  These ships are amongst the largest submarines built in Germany since World War II and are among the fastest diesel-electric submarines in the world.

ARA San Juan (S-42): ARA "San Juan" (S-42) is a TR-1700-class diesel-electric submarine in active service with the Argentine Navy.

Supporting paragraphs: ARA San Juan (S-42) TR-1700-class submarine
Answer: 1980s