An Ottawa-based company that makes electronic systems for defence organizations has landed a major contract with the Royal Canadian Navy.

General Dynamics Mission Systems - Canada has signed a six-year, $182-million deal to provide in-service support for combat systems on board the navy’s fleet of 12 Halifax-class frigates, with an option to extend the agreement for up to six more years. According to a news release, the value of the contract could also increase depending on the work required.

The ships monitor Canadian waters, help with large-scale search-and-rescue missions and provide emergency assistance when needed.

Originally introduced in the 1990s, the Halifax-class frigates were recently modernized and will remain in service until they’re replaced with next-generation Canadian Surface Combatants, which are expected to be deployed starting later this decade.