The new system improved the cost efficiency of shipping the chemicals by over 300%, resulting in an immediate profit for the company and the nickname "Jackpot Nielsen" for the new method's inventor. The maiden voyage of the new tanker system was made on board the "Freddy". This was the prototype for the "parcel tanker", a further development on the idea by Stolt-Nielsen. Stolt-Nielsen leveraged his invention into his work as a ship broker, and in 1959 Stolt-Nielsen officially became a ship owner with his purchase of the "Stolt Avance".