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Seller's Description

1983 Corbin 39 Gamzu is a true offshore cruiser set up for extended sailing, with fully enclosed heated pilot house for inclement weather, 4 solar panels to keep the batteries charged, duel steering stations and engine controls, Spectra watermaker, updated Westerbeke engine with only 1900 hours, three blade feathering prop, SSB radio for offshore communications and enough storage to provision for months at a time. The flush deck with 8 opening hatches gives great airflow below and tons of usable space on deck. Stern davits for storing the dinghy. Two large double bunks one fore and one aft plus 2 single sea berths in main salon with lee cloths. Gamzu has sailed between the Chesapeake Bay and the Bahamas for the last 5 years. She returned to the Chesapeake spring of 2023. With four solar panels there is no need to plug into shore power.

Equipment: Cockpit and Deck Stern swim ladder, dinghy davits, offshore MOB poll, Life sling and throw rope. Fold down cockpit table. Attachment points for jack lines. Aft propane locker. Dinghy engine hoist and mount on stern rail. “Granny” bars at mast for safe line handling Two large bow lockers for ground tackle and gear 6 person life raft (expired)

Electronics and Equipment Raymarine chartplotter at helm and at nav station in pilot house. Raymarine radar Hydraulic auto pilot, with controls at helm and in pilot house AIS receiver displayed on chartplotters VHF and SSB radios 400 watts of solar panels with charge controller 2 4-D batteries, battery monitor high output alternator to charge batteries Spare alternator Running Lights and masthead tri-color for offshore 120 shore power inlet, cord Battery charger 120v outlets Spectra watermaker Hot water heater Diesel cabin heater

Tankage 150 gallon diesel tank Three Fresh water tanks total 100 gallons fresh water

Head Full size marine head (manual) Electra-scan Type 1 MSD Shower and shower sump Sink and counters Plenty of storage

Galley Refrigerator and Freezer, deep top loading Plenty of cabinets and drawers Huge sink Two burner Force 10 propane stove with oven

Sails and Canvas Fully battened mainsail Main sail stack pack with lazy jacks Furling staysail Furling Genoa Asymmetrical spinnaker with launching sock Bimini and dodger with connecting side pieces to enclose cockpit Foredeck canopy for shade

Rigging Updated standing rigging has Staylok fittings for easy maintenance and/or replacement. Adjustable running backstays, gybe preventer on both port and starboard.

Ground Tackle Ground tackle is set up for spending extended time at anchor. Electric windlass with controls on the bow and in the pilothouse for short handed launching and retrieval of anchor. Primary anchor on 200’ of chain. Anchor bridle set up for snubber. Secondary anchor on 200’ of line and 15’ of chain.

Engine 48 HP Westerbeke 55D engine installed 2012 and has less than 1900 hours. New V-drive transmission installed summer 2023. Excellent access to all sided of engine from the pilot house.

Hull New bottom job July 2023, old bottom paint ground off and two coats of antifouling paint, applied. Grounding plate for SSB radio and whole boat bonding.

Specs

Designers
Marius Corbin
Robert Dufour
Builder
Corbin Les Bateaux
Associations
?
# Built
200
Hull
Monohull
Keel
Fin
Rudder
Skeg
Construction
FG w/airex cored hull

Dimensions

Length Overall
41 6 / 12.7 m
Waterline Length
31 11 / 9.8 m
Beam
12 0 / 3.7 m
Draft
5 6 / 1.7 m
Displacement
22,800 lb / 10,342 kg
Ballast
9,000 lb / 4,082 kg

Rig and Sails

Type
Cutter
Reported Sail Area
811′² / 75.3 m²
Total Sail Area
811′² / 75.4 m²
Mainsail
Sail Area
367′² / 34.1 m²
P
41 11 / 12.8 m
E
17 5 / 5.3 m
Air Draft
?
Foresail
Sail Area
444′² / 41.2 m²
I
48 5 / 14.8 m
J
18 3 / 5.6 m
Forestay Length
51 10 / 15.8 m

Auxilary Power

Make
Westerbeke
Model
?
HP
33
Fuel Type
Diesel
Fuel Capacity
?
Engine Hours
?

Accomodations

Water Capacity
?
Holding Tank Capacity
?
Headroom
?
Cabins
2

Calculations

Hull Speed
7.8 kn
Classic: 7.58 kn

Hull Speed

The theoretical maximum speed that a displacement hull can move efficiently through the water is determined by it's waterline length and displacement. It may be unable to reach this speed if the boat is underpowered or heavily loaded, though it may exceed this speed given enough power. Read more.

Formula

Classic hull speed formula:

Hull Speed = 1.34 x √LWL

A more accurate formula devised by Dave Gerr in The Propeller Handbook replaces the Speed/Length ratio constant of 1.34 with a calculation based on the Displacement/Length ratio.

Max Speed/Length ratio = 8.26 ÷ Displacement/Length ratio.311
Hull Speed = Max Speed/Length ratio x √LWL

7.84 knots
Classic formula: 7.58 knots
Sail Area/Displacement
16.1
16-20: good performance

Sail Area / Displacement Ratio

A measure of the power of the sails relative to the weight of the boat. The higher the number, the higher the performance, but the harder the boat will be to handle. This ratio is a "non-dimensional" value that facilitates comparisons between boats of different types and sizes. Read more.

Formula

SA/D = SA ÷ (D ÷ 64)2/3

  • SA: Sail area in square feet, derived by adding the mainsail area to 100% of the foretriangle area (the lateral area above the deck between the mast and the forestay).
  • D: Displacement in pounds.
16.14
<16: under powered
16-20: good performance
>20: high performance
Ballast/Displacement
39.5
<40: less stiff, less powerful

Ballast / Displacement Ratio

A measure of the stability of a boat's hull that suggests how well a monohull will stand up to its sails. The ballast displacement ratio indicates how much of the weight of a boat is placed for maximum stability against capsizing and is an indicator of stiffness and resistance to capsize.

Formula

Ballast / Displacement * 100

39.47
<40: less stiff, less powerful
>40: stiffer, more powerful
Displacement/Length
311.0
300-400: heavy

Displacement / Length Ratio

A measure of the weight of the boat relative to it's length at the waterline. The higher a boat’s D/L ratio, the more easily it will carry a load and the more comfortable its motion will be. The lower a boat's ratio is, the less power it takes to drive the boat to its nominal hull speed or beyond. Read more.

Formula

D/L = (D ÷ 2240) ÷ (0.01 x LWL)³

  • D: Displacement of the boat in pounds.
  • LWL: Waterline length in feet
310.97
<100: ultralight
100-200: light
200-300: moderate
300-400: heavy
>400: very heavy
Comfort Ratio
36.4
30-40: moderate bluewater cruising boat

Comfort Ratio

This ratio assess how quickly and abruptly a boat’s hull reacts to waves in a significant seaway, these being the elements of a boat’s motion most likely to cause seasickness. Read more.

Formula

Comfort ratio = D ÷ (.65 x (.7 LWL + .3 LOA) x Beam1.33)

  • D: Displacement of the boat in pounds
  • LWL: Waterline length in feet
  • LOA: Length overall in feet
  • Beam: Width of boat at the widest point in feet
36.38
<20: lightweight racing boat
20-30: coastal cruiser
30-40: moderate bluewater cruising boat
40-50: heavy bluewater boat
>50: extremely heavy bluewater boat
Capsize Screening
1.7
<2.0: better suited for ocean passages

Capsize Screening Formula

This formula attempts to indicate whether a given boat might be too wide and light to readily right itself after being overturned in extreme conditions. Read more.

Formula

CSV = Beam ÷ ³√(D / 64)

  • Beam: Width of boat at the widest point in feet
  • D: Displacement of the boat in pounds
1.7
<2: better suited for ocean passages
>2: better suited for coastal cruising

Notes

From BlueWaterBoats.org:

In 1977 Marius Corbin commissioned Robert Dufour of Montreal, Quebec to design him a sailboat based on a one-off 39-foot Dufour design named Harmonie. Mr. Corbin asked Mr. Dufour to increase the freeboard and flush the deck. In 1979, the first Corbin 39 came out of the resulting mold, and the Canadian manufacturer produced 129 Corbins until 1982. Most were sold as kits in varying degrees of completion. In 1982, a fire destroyed the deck molds, but because of continued strong demand, they decided to update the molds and continue production. The last Corbin 39 produced, hull number 199, was launched in 1990.

The Corbin 39 is a double ender in the classic Scandinavian lineage of serious offshore cruisers like the Westsail 32. She features a long fin keel of 6′ draft, high freeboard, and a blunt bow. Corbin produced various deck molds including flush, pilot, center cockpit, and aft cockpit variations.

Corbins have have an impressive 11 layer schedule of mat and roving with a 16mm Airex core. The deck is a 3/4″ core of marine grade mahogany early on but later Airex foam. The ballast is 9,000 pounds lead encapsulated with extra layers of fiberglass around the keel for protection. Most spars are by Everett Bastet of E.B. Spars Inc. in Quebec. Early ones had either a 46′ single spreader main or a 51′ turbo charged double spreader. Later most had 49′ double spreader rigs. All rigs are deck stepped.

Corbins with their fin keel and skeg rudder combination are better sailing than their 26,000 pounds displacement might suggest. They are meant as Marius Corbin writes to take someone, “safely and comfortably around the world…We get postcards from all over the world…what better recommendation is there for a strong and seaworthy vessel.” The cutter rig with a reefed main is a safe and seaworthy combination.

Buyers Notes

Of the 199 hulls, 184 were owner finished. These owner finished hulls were shipped in varying degrees of completion out of the Corbin yard. In 1982, a fire destroyed the molds. Post-1982 Corbins have larger cockpits and a further forward mast step to lessen weather helm. Corbin 39’s with bowsprits also sail more balanced. Look for a Corbin 39 with a double spreader spar.

Links, References and Further Reading

» Corbin 39 Owners Association, boat records, links, tips
» Corbin 39 Review, amateur review

This listing is presented by SailboatListings.com. Visit their website for more information or to contact the seller.

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