• Slide: The Image of 1978 JC 31 boat docked at marina, featuring spacious deck and cabin. - 2The Image of 1978 JC 31 boat docked at marina, featuring spacious deck and cabin. - 2
  • Slide: The Image of 1978 JC 31 boat docked at a marina, featuring an open deck and cabin. - 3The Image of 1978 JC 31 boat docked at a marina, featuring an open deck and cabin. - 3
  • Slide: The Image of 1978 JC 31 boat docked, featuring a spacious deck and classic design. - 4The Image of 1978 JC 31 boat docked, featuring a spacious deck and classic design. - 4
  • Slide: The Image of 1978 JC 31 boat docked by a calm waterfront under a cloudy sky. - 5The Image of 1978 JC 31 boat docked by a calm waterfront under a cloudy sky. - 5
  • Slide: The Image of 1978 JC 31 boat with Raymarine equipment, docked by the water under cloudy skies. - 6The Image of 1978 JC 31 boat with Raymarine equipment, docked by the water under cloudy skies. - 6
  • Slide: The Image of 1978 JC 31 boat docked at a wooden pier on a cloudy day. - 7The Image of 1978 JC 31 boat docked at a wooden pier on a cloudy day. - 7
  • Slide: The Image of 1978 JC 31 boat interior showing engine compartment with red engine. - 8The Image of 1978 JC 31 boat interior showing engine compartment with red engine. - 8
  • Slide: The Image of Engine compartment of a 1978 JC 31 boat, showing red engine and open hatch. - 9The Image of Engine compartment of a 1978 JC 31 boat, showing red engine and open hatch. - 9
  • Slide: The Image of Engine compartment of a 1978 JC 31 boat, featuring mechanical components and open hatch. - 10The Image of Engine compartment of a 1978 JC 31 boat, featuring mechanical components and open hatch. - 10
  • Slide: The Image of Red JC 31 engine from 1978, featuring intricate mechanical components and piping. - 11The Image of Red JC 31 engine from 1978, featuring intricate mechanical components and piping. - 11
  • Slide: The Image of 1978 JC 31 boat interior with wooden helm, navigation equipment, and large windows overlooking water. - 12The Image of 1978 JC 31 boat interior with wooden helm, navigation equipment, and large windows overlooking water. - 12
  • Slide: The Image of 1978 JC 31 boat dashboard with navigation instruments and controls. - 13The Image of 1978 JC 31 boat dashboard with navigation instruments and controls. - 13
  • Slide: The Image of 1978 JC 31 boat cockpit with navigation equipment and compass. - 14The Image of 1978 JC 31 boat cockpit with navigation equipment and compass. - 14
  • Slide: The Image of Interior of a 1978 JC 31 boat showing radio equipment and wiring. - 15The Image of Interior of a 1978 JC 31 boat showing radio equipment and wiring. - 15
  • Slide: The Image of Control panel of a 1978 JC 31 boat with gauges and switches. - 16The Image of Control panel of a 1978 JC 31 boat with gauges and switches. - 16
  • Slide: The Image of Interior of a 1978 JC 31 boat with life preserver and fire extinguisher. - 17The Image of Interior of a 1978 JC 31 boat with life preserver and fire extinguisher. - 17
  • Slide: The Image of Electrical panel with tangled wires in a JC 31 model, year 1978. - 18The Image of Electrical panel with tangled wires in a JC 31 model, year 1978. - 18
  • Slide: The Image of Interior view of a 1978 JC 31 boat docked, showing equipment and storage areas. - 19The Image of Interior view of a 1978 JC 31 boat docked, showing equipment and storage areas. - 19
  • Slide: The Image of 1978 JC 31 boat docked at marina with wooden pier in background. - 20The Image of 1978 JC 31 boat docked at marina with wooden pier in background. - 20
  • Slide: The Image of Circular metal hatch with mechanical components, JC 31 model, 1978. - 21The Image of Circular metal hatch with mechanical components, JC 31 model, 1978. - 21
  • Slide: The Image of 1978 JC 31 boat interior with wooden helm, windows, and equipment. - 22The Image of 1978 JC 31 boat interior with wooden helm, windows, and equipment. - 22
  • Slide: The Image of 1978 JC 31 boat with enclosed cabin and fishing rod holders, docked by the water. - 23The Image of 1978 JC 31 boat with enclosed cabin and fishing rod holders, docked by the water. - 23
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1978 JC 31

$49,500

Used

Boat in Freeport, NY 11520 US

builtBuilt in 1978
Year the boat was built
model

31

Boat model
engine

1 Engine (IVECO)

Engine type and count
length

31 feet

Overall boat length
fuel

Diesel

Fuel type
material

Fiberglass/Reinforced

Hull material

1978 31' JC Downeast. Current owner has owned this boat for the last 27 years. Boat was fully restored. Customer woodwork throughout. The house was built custom by the current owner who is a skilled cabinet maker. The motor was fully rebuilt by R.A. Mitchell of New Bedford, MA 6/16/04. 348 hours since full rebuild. 2 years ago the boat was hauled - the bottom was stripped, 4 coats of barrier coating applied. This boat will sleep 2 in the forward v birth and another 2 in the aft convertible dinette. Spare props and filters go with the boat. This boat also has a bluefin permit which goes with the boat. The oil was just changed she is ready to roll. This boat was built for and owned by Jack Cadario - the owner of JC boats. This was his personal boat.

IVECO 8061SRM30 Diesel 300hp

ZF Transmission

She will cruise at 15.5 kts burning 4 gallons per hour

2 93 gallon fuel tanks

1.5-1 gear ratio

Simrad auto pilot

Furono radar

Raymarine c120

Windless

Hot water heater

Bimini top for aft deck

In-deck livewell

Nominal Length
31ft
Length Overall
31.33ft
Beam
11.17ft
Dry Weight
10000lb
Fuel Tanks
93gal
Hull Material
fiberglass
Engine 1
Engine Make
IVECO
Engine Model
8061SRM30
Total Power
300hp
Engine Type
inboard
Fuel Type
diesel
Electric Bilge Pump
✓
Oven
✓
Marine Head
✓
Hot Water
✓
Depthsounder
✓
Radar
✓
Autopilot
✓
Compass
✓
Gps
✓
Vhf
✓
Bimini Top
✓
Disclaimer

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.

Price History

DateEventPrice
6/28/25Initial price$49,500

Overview from around the web 1978 JC 31

Customers praise the 1978 JC 31 for its classic design and solid construction, highlighting the boat’s spacious interior and comfortable layout

Many appreciate its reliable performance and ease of handling, making it a favorite for both cruising and day sailing. Owners also note the quality craftsmanship and timeless appeal, with several mentioning the boat’s excellent balance between functionality and style. Overall, the 1978 JC 31 is regarded as a well-built, dependable vessel that offers a rewarding sailing experience.

The Biggest Pros and Cons

The 1978 JC 31 is a classic sailboat known for its solid construction and timeless design. Here are some of the key pros and cons of this model:

Pros

Sturdy Build: The JC 31 is built with quality materials and craftsmanship, providing durability and reliability on the water.

Classic Design: Its traditional lines and sail plan appeal to sailors who appreciate vintage aesthetics combined with functional performance.

Comfortable Interior: For a 31-foot vessel, it offers a well-thought-out interior layout with adequate space for cruising and overnight stays.

Good Sailing Performance: The boat handles well under sail, offering balanced and responsive performance suitable for coastal cruising.

Reliable Systems: Many of the systems and equipment on the JC 31 are straightforward and easy to maintain.

Cons

Aging Components: Being a 1978 model, some parts and fittings may require updating or replacement due to age.

Limited Modern Amenities: Compared to newer boats, the JC 31 may lack some contemporary conveniences and technology.

Smaller Size: While comfortable for its size, the 31-foot length may feel cramped for some sailors on extended voyages.

Maintenance Requirements: Older boats generally require more ongoing upkeep to maintain seaworthiness and comfort.

Limited Storage: Storage space can be limited, which may be a consideration for longer trips or heavier gear needs.

Made For

The 1978 JC 31 is designed for sailors and boating enthusiasts who appreciate a classic, well-crafted sailboat that combines performance with comfort. It is ideal for those looking for a reliable vessel suited for coastal cruising, weekend getaways, and club racing. This boat appeals to experienced sailors who value traditional design and sturdy construction, as well as newcomers seeking a manageable and enjoyable sailing experience on a timeless classic.

Contact Montauk Yacht Sales

116 Woodcleft Ave, Freeport, NY, 11520

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Address

116 Woodcleft Ave
Freeport, NY 11520

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116 Woodcleft Ave, Freeport, NY, 11520

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