Question: The USS Tortuga was named after the Dry Tortugas, a group of desert coral islets 60 miles west of which city with the motto "One Human Family"?

Passages:
The Dry Tortugas are a small group of islands, located in the Gulf of Mexico at the end of the Florida Keys, United States, about 67 mi west of Key West, and 37 mi west of the Marquesas Keys, the closest islands.  Still further west is the Tortugas Bank, which is submerged.  The first Europeans to discover the islands were the Spanish in 1513, led by explorer Juan Ponce de León.  They are an unincorporated area of Monroe County, Florida, and belong to the Lower Keys Census County Division.  With their surrounding waters, they constitute the Dry Tortugas National Park. The Florida Reef (also known as the Great Florida Reef, Florida reefs, Florida Reef Tract and Florida Keys Reef Tract) is the only living coral barrier reef in the continental United States.  It is the third largest coral barrier reef system in the world (after the Great Barrier Reef and Belize Barrier Reef).  It lies a few miles seaward of the Florida Keys, is about 4 miles (6 to 7 km) wide and extends (along the 20 meter depth contour) 270 km from Fowey Rocks just east of Soldier Key to just south of the Marquesas Keys.  The barrier reef tract forms a great arc, concentric with the Florida Keys, with the northern end, in Biscayne National Park, oriented north-south and the western end, south of the Marquesas Keys, oriented east-west.  The rest of the reef outside Biscayne National Park lies within John Pennekamp Coral Reef State Park and the Florida Keys National Marine Sanctuary.  Isolated coral patch reefs occur northward from Biscayne National Park as far as Stuart, in Martin County.  Coral reefs are also found in Dry Tortugas National Park west of the Marquesas Keys.  There are more than 6,000 individual reefs in the system.  The reefs are 5,000 to 7,000 years old, having developed since sea levels rose following the Wisconsinan glaciation. <P2-S0> Two Dock Landing Ships of the United States Navy have been named USS "Tortuga", after the Dry Tortugas, islands off Florida. Loggerhead Key is an uninhabited tropical island within the Dry Tortugas group of islands in the Gulf of Mexico.  At approximately 49 acres (19.8 hectares) in size, it is the largest island of the Dry Tortugas.  Despite being uninhabited, the island receives visitors, such as day visitors and campers.  The island only has a few built structures, including the Dry Tortugas Light and a lightkeeper's house that was constructed in the 1920s.  The island has drinking water derived using desalination technology and solar power.  The Carnegie Marine Biological Laboratory operated on Loggerhead Key from 1904 to 1939. Dry Tortugas National Park is a national park in the United States about 68 mi west of Key West in the Gulf of Mexico.  The park preserves Fort Jefferson and the seven Dry Tortugas islands, the westernmost and most isolated of the Florida Keys.  The archipelago's coral reefs are the least disturbed of the Florida Keys reefs. <P0-S0> USS "Tortuga" (LSD-26) was a "Casa Grande"-class dock landing ship in the United States Navy. <P0-S1>  She was the first Navy ship to be named for the Dry Tortugas, a group of desert coral islets 60 miles west of Key West, Florida, which were discovered in 1513 by Spanish explorer Ponce de Leon. USS "Tortuga" (LSD-46) is a "Whidbey Island"-class dock landing ship of the United States Navy.  She was the second Navy ship to be named for the Dry Tortugas, a group of desert coral islets 60 mi west of Key West, Florida. Pulley Ridge is a mesophotic coral reef system off the shores of the continental United States.  The reef lies 100 miles west of the Tortugas Ecological Reserve and stretches north about 60 miles at depths ranging from 60–80 meters.  Pulley Ridge was originally discovered in 1950 during a dredging operation conducted by an academic group from Texas.  While well known to fishermen, this remarkable habitat remained undiscovered by scientists until 1999 when the U.S. Geological Survey (USGS) and graduate students from the University of South Florida happened upon it.  This reef system, like other mesophotic ecosystems, is inhabited by photosynthesizing corals and algae that are adapted to low-light environments.  It is habitat for numerous species of bottom fish including "Epinephelus morio" (red grouper) spawning area. The Dry Tortugas Ferry to Fort Jefferson is a visitor attraction in Key West, Florida.  Service is provided by the "Yankee Freedom III", a high-speed Incat-designed catamaran that takes visitors on the almost 70 mi trip out to Fort Jefferson in the Dry Tortugas National Park.  The service is a licensed National Park Service concessioner, and the only provider of scheduled ferry access to the Dry Tortugas for a ten-year term through 2020. Key West is 129 mi southwest of Miami by air, about 160 mi by car, and 106 mi north-northeast of Havana, Cuba.  Cuba, at its closest point, is 94 mi south.  Key West is a port of call for many passenger cruise ships.  The Key West International Airport provides airline service.  Naval Air Station Key West is an important year round training site for naval aviation due to the tropical weather, which is also the reason Key West was chosen as the Winter White House of President Harry S. Truman.  The central business district is located along Duval Street and includes much of the northwestern corner of the island.  The official city motto is "One Human Family." <section begin=chapter1 />

Supporting sentences:
 She was the second Navy ship to be named for the Dry Tortugas, a group of desert coral islets 60 mi west of Key West, Florida.  The official city motto is "One Human Family."