The study evaluated the potential benefits of including the effects of ‘jetting’ in the Hotstuff model, in place of the pen air turnover (PAT) parameter.

Jetting refers to a component of the ship's ventilation where a controlled and measurable air velocity is directed across a specified area. The report determined the typical velocity ratio of an average pen and compared the use of a velocity ratio and the standard PAT within the Hotstuff model.