Cairns S.I.M. Trans
Specialists in marine transmissions and marine diesel engines


Cairns S.I.M. Trans was established in 2006 and is solely owned and operated by Cairns local Greg Sims. Greg and his staff are dedicated to repairing, servicing and rebuilding diesel engines and transmissions in all types of marine vessels and land-based vehicles.

Our staff shares extensive knowledge of and experience with marine vessels and their related components.

In 2007, Cairns S.I.M. Trans saw a rapid expansion of the business with the purchase of a large custom-designed workshop and the hiring of more highly trained staff - all carefully chosen by Greg to uphold the high standard of service and workmanship that Cairns S.I.M. Trans has become known for.

Early in 2013, Cairns S.I.M. Trans was negotiating the purchase of a second adjoining workshop to house the spray painting, spare parts section and warehousing of new and secondhand engines as well as our range of generators for short or long-term hire.


We believe: "If you are going to do a job, do it once and do it right."