Eco-Cruising Hybrid Schooner

 Boats / Multihulls Northwest

Are you looking for a Home on the Sea that can take you anywhere in the world?

Do you want Quiet Propulsion? Warmth & Comfort? Safety & Security?

Buy a boat that is completely and thoughtfully set-up!


I have known Singawing and her Seller for three decades. He grew up on a sailboat and has become one of the top minds in electric propulsion. He chose this hull wisely and transformed Singawing from a world cruiser into an Eco-Cruising Global Adventure Vessel with few equals.

Singawing was extensively refit 2014-2016 – not just to refresh her – but to advance her. In addition to a state-of-the-art hybrid propulsion system, she received:

new lithium batteries (both propulsion & house)
complete re-wiring
additional solar capacity
a tough 2-part Awlgrip paint job
new decks
new hatches
new deck hardware
welded safety railings
complete re-plumbing
new tanks
standing rigging
new buried running rigging
new furling systems for main and headsails
an electric helm winch
over-sized ground tackle
RADAR, 12″ touch screen chartplotter
digital wind instruments
VHF radio
dual depth-sounders
cell & wifi boosters
gas-filled double-pane windows
LED lighting
cedar-lined closets
tongue & groove cabin overheads
new cushions
copious refrigeration
an ice-maker
and washer & dryer.

Singawing is also replete with toys & tenders for exploring our watery world. She includes a nesting sailing/rowing dinghy, ttwo single kayaks, and a double kayak for exploring distant anchorages.

This is an Eco-cruiser in every sense.

For more than two hours you can run at cruising speeds on stored electricity alone – utilizing the 50 Kwh lithium propulsion bank. Hybrid auxiliary energy generation provides up to 800 nautical miles of additional motoring range. Extensive solar charges household and hotel loads and shorepower charging systems provide economical and fast range generation. And, the single-handable and adaptable schooner rig harnesses the wind providing for fast comfortable passages with 200 mile averages easily attained.

Tired of Boat Yoga and hanging upside down in the bilge? The diesel auxiliary on this fantastic schooner rises to meet you in the pilothouse!

Down in the former engine room, a pair of 90 hp equivalent electric saildrives provide quiet efficient de-coupled propulsion. For more than two hours you can run at cruising speeds on stored electricity alone – utilizing the 50 Kwh lithium propulsion bank. Hybrid auxiliary energy generation provides up to 800 nautical miles of additional motoring range. Extensive solar charges household and hotel loads and shorepower charging systems provide economical and fast range generation.

And, the single-handable and adaptable schooner rig harnesses the wind providing for fast comfortable passages with 200 mile averages easily attained. This is an Eco-cruiser in every sense.

Do you like Warmth & Comfort? Do you like Safety & Security?

Singawing was custom designed for world cruising. She was custom built and built tough to encapsulate her crew in safety and comfort. Her hull, deck, and house layups are intentionally over-engineered to take what the sea might bring.

Thick foam coring, extensive hull & house Aerogel insulation, insulated & tinted windows, heating and air conditioning, excellent ventilation and pilothouse design make her comfortable below at any latitude.

Skippers will take comfort behind her heated interior and exterior heated helms as well as in her intelligently designed, accessible, and maintainable systems, running rigging led via conduit to the helm’s electric winch, easily furled sails, renewed standing rigging, welded stainless safety railing, and oversized ground tackle. Crew will enjoy glowing staterooms, expansive decks, a secure central cockpit, the warmth of hydronic heaters (& towel warmers), warm interior woodworking and paneling, and the output of a very sensible working galley.


The next owner will benefit from the top quality thought, carefully selected components, extensive equipment, and painstaking execution that Singawing has received. She is a smart boat. She is a wise choice. She can be yours at a very fair price. Contact Matthew to schedule a viewing and get started on your next adventure!

Specifications, Accommodation and Equipment
Eco-Cruiser Refit (2015/2016):

Teak Decks and Subdeck Removed, Deck Re-Laminated with Fiberglass
All Decks Insulated w/ Super High R Value Aerogels
Hull and Cabin Re-Painted w/ Awlgrip
Complete Vessel Re-Wire
3 New Pro-Furl Systems Installed for Mainsail and Headsails
New Stainless Steel Rigging Wire Headstays
New Lewmar Deck Hatches
New Stainless Steel Tube Life Rails Around Vessel
New Integral Fiberglass Diesel Fuel Tank
(2) New Stainless Steel Water Tanks
Complete Vessel Re-Plumb
Engine Room Rebuilt to Accommodate New Electric Drive System
New Regenautics Hybrid Propulsion Drive and Charging System
New Revision Marine 300 Amp House Battery System
New Dual Revision Marine Saildrive System Installed
New Anko 50 KW Propulsion Battery Bank
New Volvo Penta D-3 150HP Diesel Genset Installed w/ Electric Lift System to raise Genset in Salon Area for checks and maintenance
New Dual Outback 240 Volt Inverter w/ Balancing Transformer
New Outback Solar Charging System w/ Dual Controllers
New Interior and Exterior LED Lighting Systems
New Cedar-Lined Closets & Tongue and Groove Overheads in All Cabins
New Interior Cushions and Seats in Interior and Cockpit
All Windows above Deck Line Replaced w/ High Polished Double Pane Thermal PCM Windows. Tempered on the Outside and Safety on Inside
All Deck Hardware Replaced Including Cleats, Turning Blocks, Sail Tracks, Track Cars and Rope Clutches
All Running Rigging Going Forward Installed Inside the Deck and Cabin House

Hull: Fiberglass Laminate Hand Laid w/ Foam Insulation above the waterline
Hull Fastenings: Stainless Steel
Hull Frames: Fiberglass
Ballast Keel: Encapsulated Lead/Iron
Rudder: Fiberglass w/ Foam Core
Keel Bolts: None
Bulkheads: Plywood
Chainplates: Stainless Steel
Deck Material: Fiberglass and Plywood
Sea Cocks: Bronze, 1/4 Turn Type
Builder: Naumann & Dunbar Boatworks LLC, Richmond, B.C. Canada

On Deck

Singawing’s decks and side-decks are very well laid out with room plenty of room fore and aft. There are many flat areas for lounging underway. The entire vessel is equipped with stainless steel tube lifelines that provide security for the crew. The main,fore-sail, stay-sail and genoa are all self-furling and are controlled from the cockpit with a Harken electric power winch and Lewmar self-tailing winches. All running rigging leading forward is “buried” out of the way in the cabin side making for sure footing on the side-decks. The aft deck is large with a comfortable bench on the stern.

The center cockpit is fully enclosed and comfortable with 360 degree visibility. All sail controls are at the helmsman’s fingertips in the cockpit. There are two steering stations aboard, the varnished wheel pedestal helm in the center cockpit and a separate steering station f forward in the pilothouse saloon. In the center cockpit there is a full suite of sailing instruments, including a multi-function Garmin Chart Plotter/Radar/AIS/Depth/Speed as well as a display for the hybrid propulsion system to monitor power consumption underway.

Pilothouse Saloon

The pilothouse saloon is entered through the etched glass companionway that takes you down a curved stairway into the Saloon. To port is a large L-shaped settee with a varnished table that extends to fit several people comfortably. Above the L-shaped settee is a pilot berth. Forward on the bulkhead is a large book shelf and storage. To starboard is a comfortable double settee with a 1941 US Navy Mark I Compass inset between the two seats, as well as a ship’s clock and barometer.. Above the settee is another pilot berth with storage below. The Saloon area is very spacious and has fantastic natural lighting through large port-lights, insulated double-pane safety windows and overhead hatches. At night LED light fixtures provide illumination.

The entire vessel is heated dockside by a 24,000 BTU hydronic chiller reverse cycle heat pump. The heating system includes on-demand hot water, individual climate control within each space and heated towel racks and a heated cockpit to stay comfortable and dry.

The propulsion room is located under the pilothouse sole in the saloon and includes a battery bank forward, a diesel generator in the middle (which is decoupled from the electric propulsion and rises into the saloon for maintenance at the push of a button). The main propulsion room is accessed via a hydraulic assisted floorboard hatch. The entire system is very accessible and extremely well laid out for any maintenance and system checks.

The interior steering is located in the starboard forward corner of the the saloon to with a telescoping captains chair, excellent visibility and a multi-function Garmin chartplotter/RADAR/AIS/Depth/Speed as well as complete power monitoring displays.

The galley is located just aft of the saloon on the port side. It is provided with excellent natural from port-lights as well as LED lighting. A long counter-space provides room for meal preparation and there are ample cabinets, drawers and storage cubbies for food, dishes, & utensils. The galley is equipped with a Force 10 4-burner propane stove and oven, a stainless steel double sink with hot and cold water, and a large vertical Glacier Bay refrigerator. There is a deep freezer located across from the navigation station and a microwave.

Going forward from the saloon, down to the forward passageway, you encounter a double berth to starboard along with plenty of storage cabinets, an LG washer/dryer, and closet space. All storage closets throughout the vessel are cedar lined with LED lighting.

To port is the guest head with an electric toilet, a hydronic towel drying rack, a separate shower, and a vanity sink. All is illuminated by LED lighting and a variety of storage exists throughout.

The forward cabin is located at the end of the passageway and hosts a large double berth to port, a leather seat forward, a large hanging locker and storage to starboard. LED fixtures are provided throughout as well as port-lights and overhead hatches. A doorway provides access to a sail locker and storage area forward of the cabin that can also be accessed from the deck through an overhead hatch.

Aft of the saloon on the starboard side you encounter the navigation station Above and below the nav table is abundant storage. Across from the navigation station is a large deep freezer and a cedar lined hanging locker.

Aft beneath the cockpit is the master cabin. The master cabin is provided with a large Queen Berth, two Pilot Berths, leather side seats, hanging lockers and abundnant storage in cabinets and drawers. LED lighting and and natural lighting through the many port-lights and overhead hatches makes this space especially enjoyable.

The master head is located just off of the master cabin on the port side. The master head has an electric toilet, a custom countertop with sink, a mirror, LED lighting and a separate shower stall with an hydronic towel rack.

Galley and Cabin:

Hydronic On-Demand Hot and Cold Water Pressure System plumbed throughout vessel
Galley Stove: Force 10 LPG 4-Burner w/ Oven
Microwave: Sharp Carousel
Refrigerator: Glacier Bay Freezer & Refrigeration System
Watermaker: PUR PowerSurvivor 80, 80 Gallons/Day (Included but not installed)
Cabin Heat: Cruise Air TWC 3600, 24,000 BTU Reverse-Cycle Hydronic Heat Pump Radiant Heating when dockside
Marine Sanitation Devices: (2) Fully Automatic Tecma Electric Fresh Water Flushing Toilets
Washer/Dryer Combo Unit: LG
Continuous Hot Water System for Extended Needs (i.e. Showering, Dishes etc.)
Electrical System:

Electrical Circuits: 12 VDC – 120/240 VAC
Shore Power System: (1) 50 Amp VAC & (1) 30 Amp 110 VAC
Inverter/Battery Charger: Dual Outback Charging 160 Amps at 13 VDC, 120/240 VAC w/ Balancing Tranformer M2012
2000 Watt DC to DC Converter for Servicing the House Bank. High Voltage (400V) to Low Voltage (12V)
1160 Watt Solar Array linked to 2 Outback MX60 Charge Controllers – Charges House Battery
House Battery: (1) 300 Amp Hour Lithium Iron Phosphate
Propulsion Battery: Anko 50 KW Lithium Ion Bank (7 Batteries in Series)
GFCI Protected Duplex Outlets
Electric Bilge Pumps: (3) Rule Automatic 2000 GPH
Manual Bilge Pump
High Water Alarm

Chartplotter/Depthsounder/GPS/Radar: Garmin 5212 Multi-Function
VHF Radio: (2) Garmin 300
GPS: Garmin GPSMap 492 & Garmin GPS 3010C
Radar: Garmin 24 NM
AIS: Raymarine
Compass: Sestral in Binnacle at Cockpit Helm Station
Autopilot: (2) Garmin Autopilot and Robertson AP1000 Autopilot (Robertson currently disconnected and available for back-up)
Rudder Angle Indicator
Wind Speed & Direction: Garmin GMI 10
Depthsounder: Standard Horizon
Ship’s Clock and Barometer: Stockburger Quartz
Handheld VHF
WiFi: 5 WiFi and Onboard Cellular WiFi when in range
70 Mile Niles Cell Phone Signal Booster
Propulsion System:

Twin Revision Marine ZF Systems connected to (2) Volvo Sail Drive Units – each unit produces the equivalent of 90HP of thrust
Range Under Battery Power: 15-25 Miles
Range Under Hybrid Power: 800 Nautical Miles
More Hybrid Charging and Running Spec’s:
• Shore power recharge time: 6 hours

• Hybrid recharge time: 1.5 hours underway
• Battery autonomy house loads: 10 days
• Max speed: 9.6 knots
• Battery storage: 50 kilowatt’s
(2) Spare Volvo Propellers
New Reduction Gear (2020)
Electric Sail Drive Hours: 1500 (100,000 Hour Expected Life Span)

Lithium Discharge Cycles: Estimated 120 (Rated for up to 1500 Cycles)

150HP Diesel Generator Hours: 800

Generator Gallons/Hour @ 6.25 knots: 2-3

Recent Engine Service: New Computer, New Fuel System, Injectors and Fuel Pump

Steering System:

(2) Hydraulic Wheel Steering Helms: (1) Inside Helm Station in Main Salon, (1) Outside Helm Station in Center Cockpit both with Auto Helm and Remote
Sails and Rigging:

Sail Area: 2000 Sq Ft
Sails: All built by Northwest Sails and are in Good Condition. In-Mast Furling Main, Furling Fore-Staysail, Club-Footed Furling Staysail, Yankee, Fisherman, and Old Back-up Fisherman (Fair Condition)
Mainsail Furling System: Hood Yacht Sea Furl In-Mast (installed 2022)
Headsail Roller Furling System: (3) Profurl
Roller Furling, Sheeting and Out-Hauls Buried in Cabin Side Channels
Canvas: Cockpit Full Enclosure and Various Covers (Fair Condition – Owner has design for Hard Dodger)
Winches: Electric Harken 900 UniPower Winch, Lewmar #55 Self-Tailing Primary’s, (4) Lewmar #30 Self-Tailing
Standing Rigging: 3/8″ & 5/16″ Stainless Steel 1×19 Rigging Wire, Recently Inspected by Professional Rigging Company

Fuel Tanks: (2) Tanks Totaling 305 Gallons. (1) Integral Tank in Main Bilge Area, (1) Aluminum Tank Aft in Keel. Both tanks have inspection ports.
Water Tanks: (3) Tanks Totaling 335 Gallons = (2) Stainless Steel 100 Gallon (New 2016) and (1) Integral Fiberglass 135 Gallon in the Keel which doubles as Keel Cooler for Propulsion, Refrigeration and HVAC Systems.
Holding Tanks: (2) Tanks Totaling 75 Gallons. Both Fiberglass.
Anchor System and Ground Tackle:

Anchor Windlass: Nilsson H3000 12VDC
Anchor & Rode #1: 70lb Rocna D40 w/ 200′ 1/2″ Chain and 300′ 3/4″ Rope Rode
Anchor & Rode #2: 130lb CQR w/ 400′ 3/8″ Chain
Lunch Hook
Fire Fighting Equipment:

Automatic Fire Suppression System (New 2020)
(7) ABC Portable Fire Extinguishers
Fixed System: Halon
LPG Propane Safety Equipment: Solenoid Shutoff and Fume Detector
LPG Tank Storage: Aft Vented Deck Locker

The Company offers the details of this vessel in good faith but cannot guarantee or warrant the accuracy of this information nor warrant the condition of the vessel. A buyer should instruct his agents, or his surveyors, to investigate such details as the buyer desires validated. This vessel is offered subject to prior sale, price change, or withdrawal without notice.

  • Listing ID: 21457
  • Price: $474,500 US
  • Condition: Previously Owned
  • Boat Type: Sailboat
  • Manufacturer: Naumann & Dunbar
  • Boat Model: Custom Schooner
  • CE Design Category: Category A – Ocean
  • Year: 1982
  • Hull Material: Fibreglass/Composite
  • Colour: White
  • Length: 68' LOA 56' On Deck
  • Beam: 16'
  • Draft: 8'
  • Weight: 68,000 lbs
  • Motor Type: Saildrive
  • Number of Motors: 2
  • Motor Manufacturer: UQM
  • Motor Model: PP100 - Twin Revision Marine ZF Systems connected to (2) Volvo Sail Drive Units - each unit produces the equivalent of 90HP of thrust
  • Top Speed: 9.6 kts
  • Cruising Speed: 7 kts
  • Range Cruising Speed: 800+ kts hybrid Range battery alone 15-25 kts at cruise
  • Motor Hours: 1500
  • Comparable gas/petrol HP: 90 hp
  • Propeller: 4-blade bronze
  • Throttle:
  • Voltage: 400 volt propulsion 12 volt house bank
  • Battery Chemistry: LiFePo4 (LFP)
  • Battery Capacity: 50 kwh
  • Generator: Volvo Penta D3
  • Charger: Yes
  • Charger Type/Model: Dual Outback Charging 160 Amps at 13 VDC, 120/240 VAC w/ Balancing Tranformer M2012
  • Charge Time: Standard: Hybrid Generator 1.25 hours Shorepower 6 hours
  • Controller: Yes
  • Battery Monitor: Yes
  • GPS: Yes
  • Solar Panels: 1160 Watt Solar Array linked to 2 Outback MX60 Charge Controllers - Charges House Battery
  • Inverter: Dual Outback Charging 160 Amps at 13 VDC, 120/240 VAC w/ Balancing Tranformer M2012
  • Passengers: 12
  • Crew: 2
  • Cabins: 4
  • Beds/Berths: 5
  • Toilet/Heads: 2
  • Galley/Kitchen: Yes
  • Freshwater Capacity: 335 gallons
  • Wastewater Capacity: 75 gallons
See all electric boats for sale  See all electric motors for sale  Find Electric Boat Rentals
Contact details

821 DOCK STREET 1-5United States,North America,98402 Show Phone Number

Contact this listing owner

Get all the latest electric boats and boating news in your mailbox!

Sign up here for the Plugboats newsletter.

No, thanks.

Translate »