Built by hand in Port Townsend · Est. 2023

A smarter
way to sail.

Bespoke electric and hybrid propulsion for bluewater boats. Four to six conversions a season, each one built to the boat. We treat your boat like it's our own.

4 of 6 slots remain for the 2027 build season. Electric propulsion doesn't fit every boat, so we start with a short application, not a sales call.
10,000+Nautical miles logged on a system built in this shop
4 to 6Conversions a season, and not one more
OneOne standard set by the person who builds and sails it
100%Electric propulsion, proven ocean crossing
PFM
Jack and Sonya on the docksLiving aboard a Passport 42, full time, for a decade
One builder. One standard.
"The G22 on our own boat has proven what these systems can do offshore. We crossed an ocean on it. Every build gets that same capability, because we know what is at stake every time you untie the docklines."
Jack converted Gemini, his own Passport 42, using the same G22 system he builds for customers, then cruised the Sea of Cortez and crossed to French Polynesia on it. Powerflow is small by design. Four to six conversions a season, each built to the specific vessel by the same hands that cruise full time.
The 2027 build season

Four slots remain

We build between October and January. Apply now and your fit call happens this spring.

4 / 6
open
Slot 01
Wrenn
Tayana 37 · G22
Reserved
Slot 02
Halcyon
Cape George 36
Reserved
Slot 03
Open
Apply
Slot 04
Open
Apply
Slot 05
Open
Apply
Slot 06
Open
Apply
This is what working with us looks like

A slot is a place in a process, not a spot on a waitlist.

Electric propulsion doesn't fit every use case, so we start by understanding your vessel and your plans. Once you are accepted, a private portal carries you from reserved to underway.

1

Apply

A short questionnaire about your boat, your engine room, and where you are headed.

2

Accepted

We read every application and invite the boats electric genuinely suits. No sales calls.

3

Reserve

Secure your slot with a deposit, then a design window specifies the system for your boat.

4

Build & launch

Diesel out, electric in, house bank and recharging done. Commissioned and warrantied.

What a slot includes

More than a system. An owner's experience.

Your private portal

Track your build, hold every document in one place, and message us on a channel we answer weekly.

A design window for your boat

No off-the-shelf kit. Propulsion, energy, and house systems specified to your vessel and your plans.

Weekly build photos

Watch your conversion take shape from wherever you are. One update, every week of the build.

Support that knows your boat

A 24-month warranty, and a builder who answers personally because he remembers your build.

Owner voices

"The first evening at anchor with no generator running, my wife asked what was wrong. Nothing was wrong. That was the whole point."

·

"I have owned three boats. This is the first time a builder sent me a photo every week and knew my name when I called."

·
Apply for a build slot

The time to go electric is now.

Selective
By application only
$3,500
Secures your slot, once accepted
100%
Credited to your build
4 of 6
Slots remain
Apply for a build slot
Applying is free and takes a few minutes: a short questionnaire about your boat and your plans. Accepted owners secure a slot with a $3,500 deposit, credited in full toward the build and refundable for 14 days. Four to six slots per season. When they are gone, the season is closed.
POWERFLOW MARINE · PORT TOWNSEND, WA & BEYOND · powerflowmarine.com
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