Seller's Description
‘Break of Dawn’ is a 1993 Oyster 485 Cutter. 3-cabin version
24T solid fiberglass hull with teak deck, sole and interior. Lovingly cruised and upgraded by the current owners, she is setup for singlehanded long-distance cruising. If you’re looking for a true blueawater boat that doesn’t require an exhaustive refit, this Oyster is ready to go across the Pacific again.
Tons of spares, rigging, safety equipment, etc. All refit items are documented. US flagged (USCG COD).
This boat sails beautifully, heaves-to beautifully, has amazing light and ventilation with the opening windows in the salon, and will keep you and your family safe wherever the wind blows youbirthed in Cartagena, Colombia. Delivery can be discussed.
$265k
Equipment: Inventory:
New Standing Rigging New running rigging New sails (main,jib, and asymmetrical spinnaker) Removable staysail stay Spare 130 jib, staysail, storm jib New 3/8” Peerless HT G43 Chain New Airmar depth transducer Rebuilt Perkins 80Hp engine (100 hours) New ZF transmission New rudder bushings New Force 10 3-Burner Gimballed Induction Range with Broiler Seawater Pro 40Gph 24VDc Watermaker Lasdrop shaft seal Spurs line-cutter 190A Balmar Alternator with serpentine belt 12 50A/24V Dakota Lithium batteries Avon 12’ Fiberglass Dingy Mercury 25Hp 2-stoke outboard Yamaha 15Hp 2-Stoke outboard Washer/Dryer Plumbing system replaced with pro-pex Air conditioning in owner’s cabin New 80L stainless holding tank Coolblue fridge Raritan ‘Marine Elegance’ electric toilets 1200W Solar on Stainless Arch Dingy Davits Honda 2000W Generator New canvas exterior Plastimo 6 man liferaft Starlink High-Performance Dish RAY90 VHF Em-Trac B200 AIS transceiver Reactor 40 Autopilot On-demand water heater Custom mattress in owner’s cabin Electric winches Adaptors for 30A/50A/Euro shore power
Specs
- Designer
- Kim Holman
- Builder
- Oyster Marine
- Associations
- ?
- # Built
- ?
- Hull
- Monohull
- Keel
- Fin
- Rudder
- Skeg
- Construction
- FG
Dimensions
- Length Overall
- 48′ 5″ / 14.8 m
- Waterline Length
- 37′ 6″ / 11.4 m
- Beam
- 16′ 0″ / 4.9 m
- Draft
- 7′ 2″ / 2.2 m
- Displacement
- 37,550 lb / 17,032 kg
- Ballast
- 1,300 lb / 590 kg
Rig and Sails
- Type
- Cutter
- Reported Sail Area
- 960′² / 89.2 m²
- Total Sail Area
- 959′² / 89.1 m²
Mainsail
- Sail Area
- 436′² / 40.5 m²
- P
- 51′ 2″ / 15.6 m
- E
- 16′ 11″ / 5.2 m
- Air Draft
- ?
Foresail
- Sail Area
- 524′² / 48.7 m²
- I
- 58′ 11″ / 18 m
- J
- 17′ 8″ / 5.4 m
- Forestay Length
- 61′ 7″ / 18.8 m
Auxilary Power
- Make
- Perkins
- Model
- M90
- HP
- 82
- Fuel Type
- Diesel
- Fuel Capacity
- ?
- Engine Hours
- ?
Accomodations
- Water Capacity
- ?
- Holding Tank Capacity
- ?
- Headroom
- ?
- Cabins
- 3
Calculations
- Hull Speed
-
8.4 kn
Classic: 8.21 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
-
13.7
<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.
- Ballast/Displacement
-
3.5
<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
- Displacement/Length
-
317.9
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
- Comfort Ratio
-
42.0
40-50: heavy bluewater 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
Development of the OYSTER 461.
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