Greg upgraded the electrics in our boat ‘Onjon II’ which included changing to lithium batteries and associated electronics including second alternator and shore power to boost the house battery capacity sufficient to power our Gyro and Wassp fishfinder for a minimum of 12 hours. Greg is obviously knowledgeable with many years in the marine industry and his work is professional and tidy (see photo).


I have found Greg to be approachable any time when there are issues that are beyond me and prompt in responding.


I have no hesitation in recommending Mainsail Electronics.


Hugo Roest
Onjon II

Greg Lewis has been involved in the electronics on North Star II since it’s build in 1999 to the present day. His latest undertaking was a total upgrade/ conversion to all electronic and electrical controls, with state of the art equipment.
This latest mammoth task has proved very satisfactory.


I would have no hesitation in recommending Mainsail Electronics to anyone who is seeking professional assistance with their boat electronics..


North Star II – 75 ft power cat.

Brian Frecker
Owner – North Star II

Having owned some 24 power boats over my life, I have had plenty of experience in having marine electronic work done on my boats, especially as the world has become more technologically sophisticated. In 2017 I was lucky enough to meet Greg Lewis of Mainsail Electronics, who completed a major refit of a highly sophisticated electronic package to my Maritimo 500, including Waasp, Furuno Omni-sonar and a full Furuno game-fishing package. This was a complex installation made more difficult as all the equipment had previously been removed from my previous boat, but everything was not labelled. Greg not only installed and had working efficiently, but the installation was the tidiest electronic installation I have experienced, with every cable properly secured and also clearly identified for future.


Since that installation, Greg has been my go-to marine electronic adviser, installer and supplier for my subsequent boats, again set up for blue-water boating and big game fishing. I have found Greg and Mainsail Electronics, to be professional, and extremely helpful in all challenges we have had. I recommend Greg and Mainsail Electronics to anyone looking to upgrade their marine electronics, a new build, or anyone looking to get a better result from their existing marine electronic package.


Ian Witters
(Current owner of Maritimo51X – Distinction)

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