Our controllers have been used in a wide variety of electric boats. The 4QD-200 and 4QD-300 are particularly popular for cruising on the inland waterways, and are also being used in electric outboard conversions.
The 4QD-300 has been used as part of a diesel electric hybrid drive system on a 40′ catamaran.
A number of boats in the Electric Boat Association use our controllers, have a look at this post on our blog.
We have a section in our knowledgebase related to electric boat issues.
Stop press: We have just developed a water cooled heatsink for the 4QD-300 which allows operation at high currents for extended periods. It can be retro-fitted to existing controllers if required. Please contact us for details.