Question: The USS LST-510 is a ferry between New London and Orient but what is the population of Orient?

Context paragraphs:
New London (CDP), New Hampshire: New London is a census-designated place (CDP) and the primary village in the town of New London in Merrimack County, New Hampshire, United States.  The population of the CDP was 1,403 at the 2010 census, out of 4,397 in the entire town of New London.  The CDP includes the campus of Colby–Sawyer College.

USS LST-510: USS "Buncombe County" (LST-510) was an "LST-491"-class tank landing ship built for the United States Navy during World War II.  Named for Buncombe County, North Carolina, she was the only U.S. Naval vessel to bear the name.  She currently serves as a ferry between New London, Connecticut, and Orient, Long Island.

Orient, New York: Orient is a hamlet and census-designated place (CDP) in Suffolk County, Long Island, New York, United States.  The CDP's population was 743 at the 2010 census.

George Haven: George Haven, born in New London, Connecticut on March 27, 1844, was the thirtieth Adjutant General of the State of Connecticut.  He was the son of Urbane and Sarah (Rogers) Haven.  Both were members of old Connecticut families.  Haven acquired his education early in public schools of New Haven.  He loved books, but with the rumors of war he joined the National Guard at the age of 17.  After being discharged on November 19, 1864, Haven returned home to New London and worked for the Wilson Manufacturing Company, with which he was connected for 18 years.  He left the employ of the Wilson Company at around 1886, and the next year went to work for the Quinnipiac Company.  In 1888 he was appointed Chief of police of New London.  Haven served at the City of New London for six years as Alderman and Councilman.

Fishers Island, New York: Fishers Island is located at the eastern end of Long Island Sound, 2 mi off the southeastern coast of Connecticut across Fishers Island Sound, about 9 mi long and 1 mi wide.  It is about 11 mi from the tip of Long Island at Orient Point, 2 mi from Napatree Point at the southwestern tip of Rhode Island and from Groton Long Point in Connecticut, and about 7 mi southeast of New London, Connecticut, from which it is accessible by plane or regular ferry service.

Cross Sound Ferry: Cross Sound Ferry is a passenger and road vehicle ferry service operating between New London, Connecticut and Orient, Long Island, New York.  The service is privately owned and operated by Cross Sound Ferry Services, headquartered in New London.

Nicoll Fosdick: Nicoll Fosdick (November 9, 1785 in New London, New London County, Connecticut – May 7, 1868 in New London, Connecticut) was an American merchant and politician from New York.

USS New London County (LST-1066): USS "New London County" (LST-1066) was an "LST-542"-class tank landing ship in the United States Navy.  Unlike many of her class, which received only numbers and were disposed of after World War II, she survived long enough to be named.  On 1 July 1955, all LSTs still in commission were named for US counties or parishes; "LST-1066" was given the name New London County, after the county in Connecticut.

Peterson Manufacturing Building: The Peterson Manufacturing Building, also known as the New London Cooperative Creamery, is a historic building located in New London, Iowa, United States.  The first floor of this building was constructed in 1908 by John Edgar Peterson so he could expand his glove and mitten factory.  Peterson was also instrumental in the establishing the First National Bank in New London and served as its president, the Henry County Telephone Company, the New London Improvement Company, and the New London Land Company.  The second floor of this building was completed in 1909 by the local Masonic lodge.  Peterson died in 1917 and glove and mitten factory closed briefly before it was reopened by the Fairfield Glove and Mitten Factory.  In 1928 that factory closed and the building housed a creamery until 1968.  After being used as a warehouse it was donated to the Dover Historical Society for a historical museum.  The building was listed on the National Register of Historic Places in 1997.

New London Northern Railroad: The New London Northern Railroad was a part of the Central Vermont Railway from New London, Connecticut, north to Brattleboro, Vermont.  After a long period with the Canadian National Railway, it is now operated by the New England Central Railroad.  The New London Northern was the only through railroad in Connecticut not to come under the control of the New York, New Haven and Hartford Railroad.

Supporting paragraphs: USS LST-510 Orient, New York
Answer: 743