I joined this course with the idea to top up my knowledge on the HVAC area . Instead of this, I feel a competent technician that can face any challenges that any HVAC system can set on the table. This course should be a must for any mid size yacht engineer . I am very happy that my expectations for this course have been hugely passed. Also a very environmentally course that make us think the importance to deal with problems and consequences of faulty equipment onboard. Truly very happy with the content and Stuart, great teacher! Otmar Liere, Engineer, SY Legend, August 2021