Atlantic Towing has been awarded a contract by ExxonMobil Canada Properties and Hibernia for four new platform supply vessels operating out of St John's, Newfoundland and Labrador.
The 10-year contract also includes 15 years of options at the Charterers' discretion.
The first ships for the contract, which are set be delivered in 2016, will join Atlantic Towing's current fleet of eight offshore support vessels in Atlantic Canada.
Atlantic Towing vice-president Wayne Power said, "ExxonMobil has been a valued customer and we are proud and honored to have the opportunity to support the Hibernia and Hebron operations offshore Newfoundland and Labrador with the highest standard of safety and service."
Damen Shipyards Group will design and build the new ships in the Netherlands.
The ships will deliver a number of environmental benefits, including Clean Design designation with a diesel electric power plant, the latest environmental control equipment, wave piercing bow design and enhanced crew comfort.
Atlantic Towing general manager Sean Leet said, "This exceptional contract, the largest in our company's history, will increase our fleet size, our workforce and our overall contribution to the economy in Newfoundland and Labrador.
"We expect hiring of approximately 100 new positions, which will provide a great opportunity for local seafarers, to begin in December 2015."