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Seller's Description

Grayling is an Ocean Winds 33 catamaran designed by Pat Patterson and built by Symons Boatyard in Plymouth England in 1979. Patterson took an Ocean Winds and followed Drakes circumnavigation route around the world, via Magellan Straits. This is documented in book of voyage, In The Wake Of Drake, which is included in onboard library. It is a very study boat and comfortable for a cruising couple or live aboard with a surprising amount of room and storage for a 33 ft boat. Size makes it easier and less expensive to find dock space and to repair. It will fit most marina travel lifts. Shallow draft and shorter mast allows access to places many sailboats cant go. Well protected cockpit and large deck space are appreciated under sail and at anchor. Grayling has often been a popular gathering spot for sundowners and shared meals when sailing with groups. 2 stateroom design with one that can be converted to office/workshop space.

Equipment: Engine - Yanmar 2QM20 2 cylinder diesel Rated horsepower -20 hp Raw water cooled. Reported total rebuild in 1998. Outdrive - Sillette Sonic Cat 1 with transmission in outdrive, manual lift for sailing and inspection (outdrive rebuilt in 2014) Cutter rig with full batten Mainsail, hank on Staysail and Genoa on Rotostay furler Double headstay with hank on Drifter for double headsail downwind sailing Whisker pole Deck stepped anodized aluminum mast Mast removed and supporting bulkhead and mast step rebuilt 5/24 Standing rigging replaced by Ocean Rigging in 12/19 Mast and rigging surveyed and new VHF antenna, anchor light and all internal wiring replaced by Lister Marine in 5/24 Winches - 2 Lewmar # 44 self tailing and 5 Lewmar #6

Three deep stainless steel sinks Pressure freshwater and manual salt water faucets Pressure filtered freshwater faucet Top loading Adler Barber refrigerator/freezer with vertical ice cube trays Magic Chef three burner propane stove with oven Two 40 pound aluminum propane tanks in vented locker with Trident propane control near stove Paloma propane water heater Microwave oven

Groco HF marine toilet with 2 spare pump assemblies. 25 gal holding tank with deck pump out and Jabsco macerator pump for offshore discharge, spare macerator pump Trionic vent filter with refillable filter media Stainless steel sink with pressure freshwater and manual saltwater faucets Floor drain with manual shower discharge pump, hand held shower and solar shower

300 liters diesel in bladders under floor in staterooms 75 gal fresh water in bladders under floor Two 6 gal fresh water Jerry jugs and two 6 gal diesel Jerry jugs PUR Power Survivor 80 water maker, installed but never used 5 gal gas tank for outboard

2 Par Manual diaphragm pumps that can access all divided bilge compartments Rule 750 12 volt portable bilge pump

10 ft folding Portabote with 5 hp Nissan outboard Can be stored folded along side cabin or hung from Garhauer davits on transom 8 ft Motomar roll up inflatable with electric and manual pumps

35 lb Manson Supreme with 60 ft G4 1/4 inch galvanized chain and 150 foot 5/8 nylon rode through Anchorlift bow roller to Lewmar electric windlass with helm and deck controls. Manson chain lock with 1/2 in nylon snubber to each bow cleat 35 lb Lewmar Claw with 25 ft 3/8 galvanized chain and 150 ft 5/8 nylon rode 25 lb CQR anchor Fortress FX-37 and FX-16 breakdown anchors with adjustable flukes Guardian G-16 and G-11 anchors with several 1/2 in rode and chain setups 10 lb mushroom and folding grapple anchor for dingy

Four 6 volt Trojan 105 golf cart batteries for house bank IBX 24M starting battery West Marine 70 amp battery combiner Balmar 60 amp high output alternator Balmar Max Charge MC-614 multistage voltage regulator Xantrex Link-Lite battery monitor Promariner True Power Combi 1500 watt inverter and multi stage charger Two 75 watt solar panel on adjustable mount with Morningstar regulator Air marine wind generator with mast (dismounted) Spare Airmarine wind generator Small Balmar 612 backup inverter Navigation and anchor lights are LED and all interior lights are LED or fluorescent

Standard Horizon Eclipse GX1400 VHF with GPS Metz VHF antenna with new cable 5/24 Icom IC-721 SSB /Ham radio with Icom antenna tuner and insulated back stay antenna 2 Dynaplate grounding plates mounted to hull Call for additional info.

Specs

Designers
?
Builders
?
Associations
?
# Built
?
Hull
Catamaran
Keel
?
Rudder
?
Construction
?

Dimensions

Length Overall
33 0 / 10.1 m
Waterline Length
?
Beam
16 3 / 5 m
Draft
3 3 / 1 m
Displacement
?
Ballast
?

Rig and Sails

Type
?
Reported Sail Area
?
Total Sail Area
?
Mainsail
Sail Area
?
P
?
E
?
Air Draft
?
Foresail
Sail Area
?
I
?
J
?
Forestay Length
?

Auxilary Power

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

Accomodations

Water Capacity
?
Holding Tank Capacity
?
Headroom
?
Cabins
2

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

?
Classic formula: ?
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.
?
<16: under powered
16-20: good performance
>20: high performance
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

?
<40: less stiff, less powerful
>40: stiffer, more powerful
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
?
<100: ultralight
100-200: light
200-300: moderate
300-400: heavy
>400: very heavy
Comfort Ratio
?

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
?
<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
?

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
?
<2: better suited for ocean passages
>2: better suited for coastal cruising

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