Seller's Description
We’ve decided to part with our Oyster 485. She has been a great boat for us, and I have constantly upgraded her systems to the best available options. We have sailed her 45,000 miles, and she is by far the best sailing boat I’ve ever had the pleasure of cruising. Holman and Pye hit the nail on the head with this boat; it’s the perfect mix of comfortable and easy-to-handle with a short crew. This boat is set up to single-hand, with all lines leading to the cockpit, electric winches, electric heads, washing machine, watermaker, lithium,1600W solar, davits… Standing rigging new in 2023. She is nearly turn-key, needing very little to hop in and go anywhere. She is currently cruising the Caribbean.
As part of the sale, I would be willing to deliver the boat with the new owner anywhere on the Eastern Seaboard of the US/Canada while I teach you how to handle her. I am a professional delivery captain with a USCG 100T Master.
We have a condition/valuation survey from April 2023 @ $328,000
Equipment: Oyster 485 (Partial List)
Construction Hull, Deck & Superstructure Construction: * Single skin solid GRP hull, hand laid up with balsa sandwich deck. * Hull blue with white boot stripe and style lines * Teak laid decks and cockpit. * Hull epoxied (2020). * ALL underwater thru-hull fittings replaced with Tru-Design (2020). * Hull Antifauling Painted, Prop-Speed on prop.
Keel & Rudder: * Externally bolted high-performance lead bulb keel. * Rudder with stainless stalk mounted on full-length skeg. * Bronze rudder bearing replaced (2020)
Machinery Engine & Gearboxes: * Perkins M90 82hp diesel engine w/3300 hours * Scatra coupling and flexible mounts. * Head gasket and top end of engine professionally serviced (2021) * Perkins spares kit. * New Stainless steel exhaust elbow (2022) * New gearbox (ZF25M 1.88:1 ratio) (2023)
Maintenance & Performance: * Date of Last Service: April 2023. * New starter motor (2024) * Engine fuel pump full professional rebuild (2020) * Oil changed every 200hrs
Propulsion & Steering: * 3-blade folding Max prop on stainless shaft. * New shaft and aquadrive (2020). * New Spurs rope cutter (2023) * Wheel steering on pedestal (new cover 2023) * Cable and quadrant. * New LasDrop dripless shaft seal (2023)
***Please email for full list
Specs
- Designers
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- Builders
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- Associations
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- # Built
- ?
- Hull
- Monohull
- Keel
- ?
- Rudder
- ?
- Construction
- ?
Dimensions
- Length Overall
- 48′ 5″ / 14.8 m
- Waterline Length
- ?
- Beam
- 16′ 0″ / 4.9 m
- Draft
- 6′ 11″ / 2.1 m
- Displacement
- ?
- Ballast
- ?
Rig and Sails
- Type
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- Reported Sail Area
- ?
- Total Sail Area
- ?
Mainsail
- Sail Area
- ?
- P
- ?
- E
- ?
- Air Draft
- ?
Foresail
- Sail Area
- ?
- I
- ?
- J
- ?
- Forestay Length
- ?
Auxilary Power
- Make
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- Model
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- HP
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- Fuel Type
- ?
- Fuel Capacity
- ?
- Engine Hours
- ?
Accomodations
- Water Capacity
- ?
- Holding Tank Capacity
- ?
- Headroom
- ?
- Cabins
- 3
Calculations
- Hull Speed
- ?
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
- ?
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
- ?
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
- ?
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
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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
- ?
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
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