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Great Loop optimized
Low, shallow, manageable by two, and dimensioned around the Chicago River and Trent–Severn.
Extreme Loop Weapon
Hey Somebody,
Build My Great Loop Boat.
A 41-foot intelligent expedition catamaran for two people who don’t mind going slow, want real outdoor space, shallow draft, low air draft, serious autonomy, and technology that makes cruising easier.
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Built to anchor outSerious ground tackle, solar, lithium and watermaker.
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Sensor fusionFLIR, radar, AIS and cameras working together.
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Solar + lithiumDesigned as an energy system from day one.
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True walkaround decksOne pilothouse door per side, right by the helm.
The concept
What is 41XLW?
A real-world, go-anywhere Great Loop catamaran designed around the trip instead of adapted to it.
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Under 14' air draft
No flybridge. Folding electronics mast. More routing freedom and fewer bridge headaches.
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True walkaround decks
One pilothouse door per side near the helm, with usable side decks from cockpit to foredeck.
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Built to anchor out
Huge cockpit, serious ground tackle, watermaker, solar, lithium and a low-mounted tender.
The numbers
Key specs
The right size. The right capabilities. No compromises on what matters.
41'LOA
19'–19'6"Beam
3'–3'6"Draft
<14'Air draft
7–9 ktCruise
HybridDiesel-electric / parallel
Solar + LiIntegrated energy
2 + 2Cabins + heads
The gap
Why this boat should exist
Trawlers are proven. Power cats have space. Electric yachts have technology. Nobody quite combines the best parts into a 41-foot, owner-operated Loop weapon.
Trawlers → proven and comfortable, but usually single-hull, conventional systems, less outdoor space.
Power cats → huge volume and shallow draft, but often optimized for speed, charter use, or flybridges.
Electric yachts → innovative and efficient, but often larger, more expensive, and not Loop-first.
41XLW fills the gap: real-world capability, modern technology, and smart simplicity.
Non-negotiable
The rules
A Great Loop boat shouldn’t be complicated. It should just work.
Must clear Chicago.
Must make Trent–Severn.
Must be manageable by two.
Must anchor comfortably for days.
Must have a real enclosed helm.
Must not waste money on yacht-club nonsense.
Must still work when the fancy computer dies.
Builder challenge
Think you can build a better Great Loop boat? Prove it.
This is an open challenge to boatbuilders, naval architects, propulsion teams and marine-tech companies. Bring your ideas, engineering, and production reality. Improve the concept. Tell us what’s wrong. Then build the thing.
The boating community is ready for something less traditional and more useful.
View the Builder Brief
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Not a dream yacht.
A do-more yacht.
Raise your hand
I want one too.
Help prove there is a market. Join the interest list, follow the project, or tell us you might be able to build it.