HALIFAX - Public Services Minister Judy Foote will make an announcement on 'refining' the national project to replace some of the navy's aging warships.

Foote will appear at Irving Shipbuilding's Halifax headquarters on Monday morning.

The shipyard is one of two construction sites contracted in the government's bid to build new warships.

Original projections put the cost of building 15 new vessels at $26 billion, but internal documents and reports published last fall suggest the bill could run as high $40 billion.

Last month, Foote indicated the government would stop making public cost projections to allow for wiggle room as the long project evolves.