What is the fine-grained topic of the following text: Sleipner, best known for their world leading Side-Power thruster systems have invested heavily in the development of their Fin Stabilizer system over the last years, focusing on practical efficiency for modern boat design and technologies, unrestricted by traditional perceptions, as mentioned by the jury in the DAME award, thinking outside the box to improve the products basic functionality and efficiency. Only return the topic.
Sleipner's development of their Fin Stabilizer system