Kvaerner, the Anglo-Norwegian engineering and construction Group, today announced that it has received a Letter of Intent from Keystone Shipping Company of Pennsylvania, for the construction of four handy- sized (40,000 dwt) clean product carrier vessels. The total value of the award amounts to approximately $240 million. Philadelphia. Speaking at the inauguration of the new yard today in Philadelphia, which was coupled with the keel laying of the first ship that has been under construction at the yard since March 2000, Tom Ridge said: "Think about it. Just two years ago, commercial shipbuilding no longer existed in Philadelphia. "In more ways than one, we're building for the future." said Ron McAlear, President of Kvaerner Philadelphia Shipyard.