National Steel and Shipbuilding Company (NASSCO, www.nassco.com), a wholly owned subsidiary of General Dynamics, has joined BP p.l.c. in naming the Alaskan Explorer, the second of four Alaska-class double-hull oil tankers being built for BP Oil Shipping Company, USA. Maureen Hayward, spouse of Tony Hayward, Group Chief Executive of Exploration and Production for BP, was the ship's sponsor, officially naming the Alaskan Explorer and striking a ceremonial bottle of champagne across the ship's hull.