Seller's Description
We are proud to offer Sinneton, a well-maintained 2017 Catalina 425 sloop designed for comfort and performance, ideal for liveaboard and Caribbean cruising. With only one owner and impeccable care from Jolly Harbour, Antigua, this yacht showcases high standards in both maintenance and equipment.
Sinneton features three spacious cabins, two heads with fresh water electric toilets, and convertible salon seating, accommodating up to eight guests. Luxury details include a memory foam topper in the forward cabin, custom wood trim, and Corian countertops throughout. The large cockpit offers seating for up to 12, with a folding starboard seat and a refrigerated cockpit table perfect for entertaining.
Top-notch amenities include dual Webasto 16,000 BTU air conditioning and heating units, an Ecotech watermaker, and advanced navigation tools like Raymarine EV4000 autopilot and Quantum radar. Practical deck equipment such as Spade and Fortress anchors and Garhauer dinghy davits, combined with a Northern Lights 5kW generator, a 400-watt wind generator, and (3) 110-watt solar panels, ensure energy self-sufficiency.
Under sail, Sinneton is equipped with a Doyle in-mast furling mainsail and a 105% Genoa by North, supported by Lewmar self-tailing winches for easy handling. Powered by a Yanmar 4JH57 engine with just 720 hours, she cruises at 5 knots and offers a 400-mile range on a single tank.
Ready for liveaboard life or extended cruising, Sinneton combines Catalinas renowned design with owner upgrades for maximum comfort and reliability.
Equipment: Contact for full listing details!
Specs
- Designer
- Gerry Douglas
- Builder
- Catalina Yachts
- Associations
- ?
- # Built
- ?
- Hull
- Monohull
- Keel
- Fin
- Rudder
- ?
- Construction
- FG
Dimensions
- Length Overall
- 41′ 11″ / 12.8 m
- Length On Deck
- 41′ 8″ / 12.7 m
- Waterline Length
- 39′ 0″ / 11.9 m
- Beam
- 12′ 11″ / 4 m
- Draft
- 4′ 0″ / 1.2 m
- Displacement
- 18,100 lb / 8,210 kg
- Ballast
- 6,700 lb / 3,039 kg (Lead)
Rig and Sails
- Type
- Fractional Sloop
- Reported Sail Area
- 940′² / 87.3 m²
- Total Sail Area
- 905′² / 84.1 m²
Mainsail
- Sail Area
- 468′² / 43.5 m²
- P
- 52′ 0″ / 15.9 m
- E
- 18′ 0″ / 5.5 m
- Air Draft
- 62′ 11″ / 19.2 m
Foresail
- Sail Area
- 437′² / 40.6 m²
- I
- 55′ 8″ / 17 m
- J
- 15′ 8″ / 4.8 m
- Forestay Length
- 57′ 10″ / 17.7 m
Auxilary Power
- Make
- Yanmar
- Model
- 4JH57CR
- HP
- 57
- Fuel Type
- Diesel
- Fuel Capacity
- 62 gal / 235 l
- Engine Hours
- ?
Accomodations
- Water Capacity
- 106 gal / 401 l
- Holding Tank Capacity
- ?
- Headroom
- ?
- Cabins
- 2
Calculations
- Hull Speed
-
11.2 kn
Classic: 8.38 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
-
21.8
>20: high 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.
- Ballast/Displacement
-
37.0
<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
-
135.4
100-200: light
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
-
21.1
20-30: coastal cruiser
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
-
2.1
>2.0: better suited for coastal cruising
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
Wing keel available:
Draft: 5.0’ / 1.52m
Ballast: 7,700 lbs / 3,493 kg
Displacement: 19,100 lbs / 8,664 kg
Optional 18 gal. auxiliary fuel tank.
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