About Us

With our combined experience spanning over 200 years, we know our customers and their exacting needs inside out. We design, manufacture, sell and service products that meet stringent standards , including SOLAS and USCG liferafts and life jackets, and immersion suits. We go far beyond offering high quality equipment: we stand shoulder to shoulder with our customers creating bespoke safety systems, by expertly selecting products from across our Group.

Who we are

Brought together by August Equity, 3Si is a group of international marine safety and survival companies, each known for their technical expertise and in-depth knowledge of their market. With a range of equipment developed through close collaboration with customers and, combined with our industry-leading expertise, we offer a comprehensive service to the marine industry.


What we do

We take our responsibility seriously, seeking at all times to be at the forefront of innovation, we are known for our technical excellence. We contribute to regulatory boards and expert committees and are resolutely committed to making the industry and the waters safer for all.