Complex sentence: The "Queenston" class of naval auxiliaries for the Royal Canadian Navy (RCN) began as the Joint Support Ship Project, a Government of Canada procurement project for the RCN that is part of the National Shipbuilding Procurement Strategy.
Split into simpler sentences: The "Queenston" class is a class of naval auxiliaries for the Royal Canadian Navy (RCN). The class began as the Joint Support Ship Project, a Government of Canada procurement project for the RCN that is part of the National Shipbuilding Procurement Strategy.