Though not scheduled for delivery until the summer of 2000, Arco's Endeavour, which is under construction at Litton Avondale Industries in New Orleans, is such an achievement that review of the ship's progress is necessitated in this year's grouping of Great Ships. When the Arco Millennium tanker project was announced in 1997, it was recognized as one which would require exceptional adherence to technical excellence in the design, construction and outfitting of what could arguably be described one of the more advanced oil tankers in the world. With its operation in and around the environmentally super-sensitive U.S. West coast (it was designed primarily for the 2…