U.K. shipbuilder Vosper Thornycroft Holdings Plc has been selected as preferred bidder by the Ministry of Defense to supply two survey ships in a deal worth up to $150 million. "Our selection as preferred bidder is recognition of our expertise in the U.K. and overseas as a prime contractor," Chief Executive Martin Jay said in a statement. The 90-m vessels are due for delivery in 2002 and Vosper anticipates signing the contract by early summer. The deal was expected to include a 25-year support package for the vessels.