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1973 Gulfstar 41 Ketch

Listed
Expired
$55,000 USD

Seller's Description

(this ad was made for option 1. I am still figuring out pricing so make an offer… Photos coming, but there’s also the instagram listed down below)

Here is my 1973 Gulfstar 41 Ketch with the deep keel (extremely rare production, estimated 14 made) for sale.

Been refitting her since I bought her in September of 2019. At this point, its finishing the final finishes. I will be continually plugging away at them but have decided to part ways with this boat for personal reasons. The refit has left her with essentially new bones just requiring the finishing bits.

I’m good with selling the boat in a few configurations and prices are just a starting point.

1) As is with the electric motor, $55,000 (EY is a $25K Install, parts only) 2) Sold with a Perkins 4108 (or equivalent diesel) in it, $35,000. This will be a slower delivery as the diesel would come from the boat I am replacing this with. 3) No motor at all, tbd.

If you want to cut out pieces of equipment from the price, I’m good with that. These could be the heater (which then would provide an aft cabin seat), AC, I don’t know what else.

The boat received an entire new barrier coat around 2008, completed by workers of Osprey Marine in Deale. So blistering is not a problem on this boat.

The whole refit was documented on Instagram, @sailingcontrary

Equipment: Electric Yacht QT 20.0 Motor installed April 2022, 26 hours. - 48V system with regeneration. - Four 48V and 96ah Dakota Lithium Batteries for a total of 400ah battery bank.

All New since 2020

-16,000 BTU Webasto Reverse Cycle AC (2022) -Refleks 2000KV with 2 rads, this kept the boat at 72F all winter and below 50% humidity. -All new plumbing (pex) -All new 120V Wiring, 12V is almost all new. -LED Lights -All new NewFoundMetals Ports. -Jabasco Freshwater Electric Flush and Holding Tank. -All new 120/12V panels, 2 30amp smart plugs -Isotherm 4.5 CUFT refrigerator 120V/12V -Dometic Freezer 120V/12V -New bilge pump switch/float -Renogy 40amp solar charge controller 1 12V 100w panel. -New self tailing Lewmar Winches for Jib.

Sails -Hood Main, Mizzen, 150% genoa, working jib all in very good condition -Downwind jib from Australian racing sails

Cockpit Cushions, Bimini.

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Specs

Designer
Lazzara
Builder
Gulfstar Yachts
Associations
?
# Built
?
Hull
Monohull
Keel
Fin
Rudder
Skeg
Construction
FG

Dimensions

Length Overall
41′ 0″ / 12.5 m
Waterline Length
33′ 0″ / 10.1 m
Beam
12′ 0″ / 3.7 m
Draft
6′ 0″ / 1.8 m
Displacement
22,000 lb / 9,979 kg
Ballast
7,000 lb / 3,175 kg

Rig and Sails

Type
Ketch
Reported Sail Area
723′² / 67.2 m²
Total Sail Area
608′² / 56.5 m²
Mainsail
Sail Area
225′² / 20.9 m²
P
38′ 3″ / 11.7 m
E
11′ 8″ / 3.6 m
Air Draft
?
Foresail
Sail Area
383′² / 35.5 m²
I
45′ 0″ / 13.7 m
J
16′ 11″ / 5.2 m
Forestay Length
48′ 1″ / 14.7 m
Mizzen
PY
27′ 3″ / 8.3 m
EY
8′ 5″ / 2.6 m

Auxilary Power

Make
?
Model
?
HP
?
Fuel Type
?
Fuel Capacity
?
Engine Hours
?

Accomodations

Water Capacity
?
Holding Tank Capacity
?
Headroom
?
Cabins
3

Calculations

Hull Speed
8.3 kn
Classic: 7.7 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

8.29 knots
Classic formula: 7.7 knots
Sail Area/Displacement
14.7
<16: under powered

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.
14.73
<16: under powered
16-20: good performance
>20: high performance
Ballast/Displacement
31.8
<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

31.82
<40: less stiff, less powerful
>40: stiffer, more powerful
Displacement/Length
273.2
200-275: moderate

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
273.16
<100: ultralight
100-200: light
200-300: moderate
300-400: heavy
>400: very heavy
Comfort Ratio
34.8
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
34.79
<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
1.71
<2: better suited for ocean passages
>2: better suited for coastal cruising

Notes

Dimensions for ketch rig.
See GULFSTAR 41 for more details.

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

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