|Earth Pre-Federation Database - Venture Star|
|OV-165 was an orbital vehicle, a type of space shuttle, used by the inhabitants of Earth in the first half of the 21st century.
Star Trek: Enterprise Opening Credits
This ship was seen in the opening titles of Star Trek: Enterprise as Linda Park's credit plays, right after the International Space Station (a 1990's concept), and prior to a scene of the Phoenix in 2063. While no name or agency's logo were seen on the ship, the number follows the registry system used by NASA for the modern day space shuttle orbiters used by the United States of America, a system that began with Challenger OV-099 and Enterprise OV-101.
The reference book Star Trek Spaceflight Chronology, published in 1979, featured a similarly shaped craft on page 40. It was called the Space Ferry, the successor of the space shuttle from 2003 to 2015. It was equipped with an aerospike engine and did not require booster rockets for lift-off.
Text from the Memory Alpha, the free Star Trek reference