1979 Custom Spronk 49

ID# 3535088

Ask A Question



Yacht Overview

Make: Custom

Model: Spronk 49

Year: 1979

Length: 49′

Located In: Saint Augustine, FL

Engine/Fuel Type: diesel

Hull Material: Wood

YW#: 7061933


Peter Spronk became a legend with catamaran aficionados by designing and building some of the fastest and most beautiful catamarans ever made. Blue Moon is one of them. Custom made in 1979, Blue Moon was completely refitted in 2013 with every nut and bolt, every surface, and every piece of equipment being redone as new. Further upgrades in 2018 include 19 feet of new acrylic windows in the salon, a new autopilot, and a beefed-up steering pump for exceptional speeds and sea conditions. The boat was sailed in 2018 from the BVI’s to the Abacos in heavy weather (930 NM), with all sails reefed, in 96 hours. That’s 9.69 knots average on the open ocean. The owner reports sailing single-handed in the double digits and finds the ketch rig easy to handle. It’s comfortable with two queen-sized berths and ensuite electric heads aft, and a crew cabin forward with ensuite electric head. There are three air-conditioning systems for at-the-dock comfort, and solar panels, a wind generator, and a water maker for out in the wild blue yonder. 

Full Specs

Boat Name

Blue Moon


LOA: 49
LWL: 45
Beam: 20.5 ft
Maximum Draft: 4 ft
Bridge Clearance: 58 ft


Engine Brand: YANMAR
Engine Model: 3JH5CE
Engine/Fuel Type: diesel
Engine Power: 39|horsepower
Engine Type: Inboard

Engine Brand: YANMAR
Engine Model: 3JH5CE
Engine/Fuel Type: diesel
Engine Power: 39|horsepower
Engine Type: Inboard


Fresh Water Tanks: 1 (57 Gallon)
Fuel Tanks: 1 (72 Gallon)
Holding Tanks: 2 ( )


Number of cabins: 3
Number of heads: 3

Layout & Accommodations

It is comfortable at the dock with two queen sized cabins aft in each hull with ensuite heads
Single crew cabin starboard hull forward with head and sink (three heads total)
Flooring: Teak & Holly
Interior finish: White
Head and showers: One in each hull ensuite to berths
Cabinets: 2 small ones in each cabin + 1 large drawer
Hanging lockers: Yes in house
Navigation station: Yes in house
Interior lighting: Yes
Generator: Maspower 7.0 kw
Generator hours: 800
Solar panels: 2x135w Kyocera, Solar cells + charge control
Wind generator: Air Breeze 38 KWH


Refrigerator: Waeco
Freezer: 2x domestic freezer/fridge
Sink: SS Scanvik
Stove: 2 burners
Oven: Microwave
Counter tops: Wood and awl-grip paint

Deck & Equipment

Cleats: 8
Cockpit seating and table: Yes
Cockpit cushions: Yes
BBQ: SS, gas fired
Deck shower: Handheld
Bimini: Hardtop with sliding hatch over helm
Traveler brand: Harken
Standing rigging: New 2012
Running rigging: New 2012
Stack pack with lazy jacks: 2 new
Batten car: Harken
Primary anchor: Delta 50 pounds
Primary anchor chain and rode: 300' ACCO BB 3/8
Secondary anchor: Fortress 45 pounds, 60' chain + line 125' with remote control
Windlass: New 12V Lewmar 1500 W
Trampoline: Woven tape, new 2012
Bumpers: 5 medium
Dock lines:6
Opening hatches: Lewmar Ocean 4 hatches 10" x 10", 6 hatches 24' x 24
Davits: Sling system between aft crossbeams
Swim platform: Integrated aft
UV window covers: Yes
UV hatch covers: Mosquito curtains
Helm cover: Yes
Door cover: Yes


Electronics & Navigation

GPS: Garmin
Raymarine EV 200 Autopilot
Depth sounder: Raymarine ST60+
Wind Speed and Direction Model: Raymarine ST60+
VHF Radio: Garmin VHF 200
Inverter: Mass combination 12/2500-100
Battery monitor system: Blue Sky
Chart plotter: Garmin GPS Map 4000/15000
Hot water heater: Atwood 2x
Air conditioning: Dometic (2) 12000 BTU and (1) 16000 BTU
Shore power: 50'
Charger: Mass Combination
Alternator: Balmar 60 Series
Electrical sockets: 110V (12x)
Cabin fans: 1 in each cabin/Caframo
Compass: Richie Power compass 6"

Electrical, Power & Plumbing

7 KVA Mas generator (100 hours), full air conditioning (12K +16K BTU)
Watermaker New Echo Tec 38 gallon (membranes picked 4/19), solar, windgen and all amenities for efficient cruising in comfort.
Fuel: 2 x 136 liter
Water: 1x 216 liter (Vetus)
Holdings: Jabsco 7.5 gallon 2x


Sails & Rigging

The aforementioned equipment as well as sails, standing and running rigging are all new. Mainsail: Fully battened 2012 (new)
Jib: 120 Genoa 2012 (new)
Genoa Furler: Harken
Mast: 48' aluminum main, 40' mizzen

120 Genoa on Blue Moon made 2012 and just refurbished this month with new sun cover and new furling line

Engine & Mechanical

Engine Manufacturer: YANMAR
Engine Model: 3JH5CE
Engine Year: 2013
Engine Horsepower: 39 HP
Engine Hours (Port): 392.6
Engine Hours (Starboard):385.5
Engine Type: InBoard
Engine ProjectConfig: Twin
Engine Fuel Type: Diesel
Engine Condition: Used


Additional Information

Brand: Spronk
Model: 49' Ketch
Designer: Peter Spronk
Year: Original 1979; fully rebuilt in 2011-2013
Hull Material: WEST system bruynzeel okoume
Reg T.9 981100
Last tuned: March 2021

Flares: Orion
Life vests: 8
MOB gear: Yes
Medical kit: Yes
Electric bilge pumps: 8
Emergency tiller type: Yes, custom ss
Tools and Spares: Yes
Fog Horn: Yes
Generator + both engine rooms have automatic shutdown fire extinguishers + override switches
Hydraulic Steering - New 2019
Hull material is a sandwich of okume marine ply with West System epoxy both side and Dynel sheathing outside making the boat light and very rigid.


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 desired validated. Photos may not properly reflect the current condition of the actual vessel offered for sale. In some cases stock photographs may have been used.

This boat may not be listed by Massey Yacht Sales & Service and may be listed by another brokerage company. This listing is made available as a courtesy to those visiting our website.

The advertising broker is merely providing this information in an effort to represent you as a buyer in the purchase of this vessel.

Go to Top