EVA has been helping convert boats to electric as well as electric sailboat auxiliaries
for almost 20 years. Our largest electric auxiliary is a 144V system for a 50 ft
sailboat built in Nova Scotia. Our largest pure electric boat was a 40 ft Electric
Boat by Clearwater Boats built in 1994.
EVA has done a number of auxiliary drives replacing older Atomic 4, Westerbeke, and
other diesel engines. The typical system is 48V. There are two reasons. First,
a 48V system can drive a 28 ft sailboat with 8000 lbs displacement. A 48V system
is rated at 6 hp continuous and 10 hp peak. Other 48V systems are 10 hp continuous
and 30 hp peak. A generator can be added to make it an electric hybrid. Second,
above 50V, the U.S. Coast Guard has more stringent regulations; these regulations
are more applicable to commercial vessels.
EVA can provide boat calculations to help you size components. There is a misconception
1 hp electric = 3 hp gas.
This is not true.
Hp is hp. The difference is that an electric motor is rated at it point of maximum
efficiency; yet may be capable of delivering 3x its rating for short periods of time
(i.e. Startup, acceleration, etc.)
Please give us a call at 603-569-2100 to discuss your application. Or simply email
Can’t find what you’re looking for? We are happy to work with you to give you a
free, detailed calculation.
More customer pictures are shown at EVA Customers - Boats.
“EVA - Customer Service is No. 1 !”
Beckmann Ltd. Benign Boat Brush Creek Yachts Cape Fear Community College Clearwater Electric Boat Consolidated Yacht Crowley's Ship Yard Deep Sea Adventure Duffy Boat
Electro Cruise Boats Hoffman Yachts Mass Maritime Academy Morgan Marine ORI - Oceanographic Research Onion River Boat Works Urban Boat Builders U.S. Navy
Electric Drive Advantages No Pollution No Noise Always starts No Winterizing Economical