Koole Engineering has expertise in both ship development and tank engineering. The combination of the two knowledge fields have positioned Koole Engineering as the leading specialist in the area of independent cylindrical tanks for ships. The integration of the two specialities came about from the desire of a shipping company to develop a sea going vegetable oil tanker with independent cylindrical tanks. The benefits of using independent cylindrical tanks had already been proven on board various inland waterway tankers. The translation of the application of the cylindrical tanks on board an inland waterway vessel to a sea going vessel proved very challenging. After extensive research a revolutionary solution, the orca tank technology, was developed.