Seller's Description
One of a kind!! This 1974 Gulfstart 41 Ketch boasts a total electric 856 Ah 48V battery bank that powers a Heinzman Electroprop 22KW motor.
Each of the 8 Oddyssey PC 1800-FT 214 ah AGM batteries has its own Mastervolt 12-2-25 AC charger. There is a RENOGY Rover 60a charge controller and 6 RENOGY 100W panels feed the propulsion system.
Additionally, the house system has 4 Grenier Power 100 Ah LiFePo5 12v batteries and a Mastervolt Solar Chargemaster 25 charge controller, 4 RENOGY 100w panels and a RENOGY 2000w inverter.
This ketch has two staterooms, the forward V-berth with a head, and the aft stateroom has a v-berth with a head and shower. There is ample storage throughout this vessel.
The boat is set up for comfort, with the mid-ship boasting a dinette, settee, and a nice galley. The galley is also mid-ship and has countertops, a gimballed oven with a stovetop, a stainless sink, a watermaker that has never been used, and a 12-volt refrigerator/freezer.
This center cockpit has an uncluttered deck for easy maneuvering. It has a custom-made hardtop that holds 5 of the solar panels and includes a rainwater gathering system.
Navigation electronics include a NEMA 2000 backbone, a Raymarine Axiom 100 GPS/Chartplotter, a Raymarine T70158 autopilot, and Raymarine wind and depth instruments.
The aft deck includes a large custom-made storage box, a heavy-duty dinghy davitt setup, and there is a custom-built folding boarding ladder on the starboard side midships.
Forward, there is a new Alado roller furler, and the sail inventory includes 2 Genoas, a mainsail, a mizzen sail, and a spinnaker.
Groundtackle includes a CQR anchor, a plow anchor, and a Maxwell RC series RC10-10 vertical windlass. The windlass is powered by its own 100ah LiFePo4 battery.
Included is a Caribe 5-person hard-bottom dinghy and a Johnson 15 HP motor, and a Sailrite Ultrafeed LSZ sewing machine with a supply of canvas and Isenglass.
Specs
- Designer
- Vince & Richard Lazarra
- Builder
- Gulfstar Yachts
- Associations
- ?
- # Built
- 160
- 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
- 4′ 9″ / 1.5 m
- Displacement
- 22,000 lb / 9,979 kg
- Ballast
- 7,000 lb / 3,175 kg
Rig and Sails
- Type
- Sloop
- Reported Sail Area
- 691′² / 64.2 m²
- Total Sail Area
- 691′² / 64.2 m²
Mainsail
- Sail Area
- 308′² / 28.6 m²
- P
- 38′ 3″ / 11.7 m
- E
- 16′ 0″ / 4.9 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
Auxilary Power
- Make
- Perkins
- Model
- 4-108
- HP
- 50
- Fuel Type
- Diesel
- Fuel Capacity
- 45 gal / 170 l
- Engine Hours
- ?
Accomodations
- Water Capacity
- 53 gal / 201 l
- Holding Tank Capacity
- ?
- Headroom
- ?
- Cabins
- ?
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
- Sail Area/Displacement
-
14.1
<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.
- 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
- Displacement/Length
-
273.2
200-300: 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
- 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
- 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
Notes
Available as sloop or ketch.
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