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.
We now have water cooled and air cooled heatsinks for the 4QD series which will allow operation at high currents for extended periods. They can be retro-fitted to existing controllers if required. Please contact us for details.