37 Duffy 2005 Boat for Sale

Potion

ASKING PRICE: $250,000 Watch Price

Mystic, CT

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Last updated Nov 15, 2025

Potion Boat | 37' Duffy 2005

2005 37 Duffy - Classic Downeast Cruiser with Cummins Power

POTION is a beautiful example of a traditional Maine-built downeast cruiser, combining timeless lines with reliable performance and modern upgrades. Powered by a single 450 HP Cummins engine, she offers efficient and comfortable cruising at displacement and semi-displacement speeds. A Westerbeke generator ensures dependable power at anchor or underway, supporting onboard systems and amenities for extended cruising.

The spacious, well-appointed cockpit and pilothouse provide excellent visibility, ventilation, and comfort, making her ideal for weekend getaways, coastal cruising, or serious passagemaking. Updated Garmin electronics including dual 12 inch screens along with Simrad autopilot bring modern navigation to the helm, while classic Duffy craftsmanship shines through in her clean lines, solid construction, and fine joinery.

If you are looking for a proven downeast vessel with updated systems, classic appeal, and real offshore capability, this Duffy 37 deserves a close look.

Denison Yachting is pleased to assist you in the purchase of this vessel. This boat is centrally listed by Stellwagen Yacht Sales.

Denison Yacht Sales offers the details of this yacht in good faith but can’t guarantee the accuracy of this information nor warrant the condition of this boat for sale. This yacht for sale is offered subject to prior sale, price change, or withdrawal from that yacht market without notice. She is offered as a convenience by this yacht broker to its clients and is not intended to convey direct representation of a specific yacht for sale.

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Potion HIGHLIGHTS

Yacht Details: 37' Duffy 2005
Location: Mystic, CT
Engines: Cummins
Last Updated: Nov 15, 2025
Asking Price: $250,000
Maximum Speed: 19 kn
Max Draft: 4' 3''

Potion additional information

Specifications

Cruising Speed: 15 kn
Maximum Speed: 19 kn
Beam: 13' 6''
Hull Material: Fiberglass
Max Draft: 4' 3''
Displacement: 19,000 lb
Fuel Tank: 2 x 125|gallon
Fresh Water: 1 x 110|gallon
Holding: 1 x 18|gallon
Cabins: 1
Heads: 1

Electronics

Garmin Multifunction Displays - GPSmap 8612xsv and 8612
Garmin Radar GMR18XHD
Simrad AP35 Autopilot
Standard Horizon Spectrum Plus VHF Radio with Horizon RAM mic
Airmar 0150-0027-1000 Speed and Temperature Sensor
Raymarine Depth Sounder and Speedometer
Constellation Compass
Vesper Marine AIS Transponder
Custom Radar Mast

Mechanical And Electrical

Cummins 6CTA 8.3 450hp Main - 2046 hours
Westerbeke 5kw Generator - 2305 hours
ZF Marine ZF280 2:1 Transmission
Dual Ram Hydraulic Steering
3 Inch Sound Down Insulation
Lewmar Anchor Windlass
Side Power Bow Thruster
5 Blade Nibral Propeller
PSS Dripless Shaft Seal
Algae-X Magnetic Fuel Conditioner
Racor 1000MA Fuel Filter
Fireboy Fire Extinguisher System
Dual 30 amp shore power cords
Battery Charger
AC/DC Panel
LED Underwater Transom Lights
Groco ARG 2000 Sea Water Strainer (main)
Groco ARG 1000 Sea Water Strainer (generator)
Rule Automatic Bilge Pumps

Accommodations

Custom Portland Boat Mattress Forward Berth with Filler Cushion
Enclosed Head to Starboard with Seperate Shower
Full Chart Table to Port - Doubles as At Home Work Office Space and Additional Berth
Galley up to Port with Nova Kool Refrigerator, Sink, Oven and 3 Burner Stove
Convertible Dinette Up to Starboard
Teak and Holly Sole
Ample Storage Throughout
MarinAire 9000/10000btu Dual Zone Reverse A/C and Heat
Raritan 1700 Series Marine Water Heater
FloJet High Pressure Fresh Water Sytem
Shower Sump Pump
2025 - NEW Swim Step from Atlantic Boat Company