35-foot sailboat electric repower
Mid-size cruisers around 6–8 t — the most common repower target on the market.
Not an exact match? The wizard adjusts to your real numbers — these are reference hulls for the typical sizing.
Calculated by the configurator for the example boat below, sizing the pack for 2 hours at the motor's full rating with reserve. Open it to change any input.
What this segment looks like
Why a 35 ft sailboat is a sensible repower target
Mid-size cruisers in the 33–37 ft range — Bavaria 34, Beneteau Oceanis 35, Hallberg-Rassy 34 — typically displace 6–8 tonnes. For a 7.5 t boat at 5.5 kn the configurator estimates about 7 kW, so an 8 kW motor on a 48 V system.
- About 7 kW holds 5.5 kn on a 7.5 t hull, so the configurator suggests 8 kW.
- At 8 kW the 48 V design current is about 280 A — workable, though heavy; 96 V would bring it to about 155 A.
- About 26 kWh covers 2 hours at full rating with reserve; place it low and central for trim.
- A 3.5 kW charger takes about 7 hours from 20% to full; 7 kW takes under 4.
Related sizing guides
One complete electric drive system priced from the maker's own list, and a checklist of everything else to get quoted for an electric repower.
A practical comparison of saildrive and shaft-drive configurations for electric boat repowers — installation complexity, efficiency, maintenance, and which suits your hull.
How to plan passages with an electric boat — realistic range figures, what kills range, depth-of-discharge strategy, and five practical ways to extend range.
Frequently asked questions
35 ft sailboat — common questions
Quick answers to what most owners ask before starting a repower.
How many kW does a 35-foot sailboat need?+
How much battery capacity is realistic for a 35 ft cruiser?+
Should I go 48 V or 96 V on a 35 ft boat?+
How long does it take to charge the pack?+
Will the boat still sail well after repower?+
Different boat?
Size your 35 ft sailboat now
Opens on the results for this segment — every value editable. Free to run; PDF from €29.