A worker walks through the Seaspan Vancouver Shipyards as the main girder of a new 300-tonne gantry crane is lifted into place in North Vancouver, B.C., on Wednesday April 2, 2014. New documents show a Vancouver shipyard was only able to deliver the first of the coast guard's three new science vessels guard last week by cannibalizing parts from one of the other ships for repairs. THE CANADIAN PRESS/Darryl Dyck