A submarine economic boom is just around corner. So are the challenges.

OTTAWA - As Ottawa inches closer to deciding who will supply the navy’s next fleet of submarines, both the benefits and challenges involved in replacing Canada’s four rusting antiques are coming to the surface.

While the industrial benefits from the submarine project will start to flow once contract details are hammered out, experts say major questions still need to be answered about long-term maintenance and staffing of the complex war machines.

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