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Layout : Length : 11,20 m (36’ 8”) LWL : 8,5 m (27’9”) Beam : 3 m (10’10”) Draft : 1,7 m (5’6”) Headroom : 1,95 m (6’4”) Displacement : 7257 Kg (16000 lbs dry load) Ballast : 2812 Kg (6200 lbs) Material : Fiberglass Rigging : Cutter Engine: Yanmar 4JH3E 56 HP American flag. Tax not paid for French Polynesia.
Based in French Polynesia
To seize! April 2023 survey available.
Well maintained, upgraded and well equipped sailboat.
Ready to go!
Interior fittings : Sleeps 4 to 5 - 2 double cabins
Fore double cabin En-suite head with shower and toilet Large L-shaped saloon to starboard convertible into double bed with bench seat/bunk to port Chart table with pilot berth to port U-shaped galley to starboard Listing :
Building and history Crealock 37 cutter sailboat built in 1981 by the Pacific Seacraft shipyard from Bill Crealock’s designs. She has been carefully improved and well maintained by her owners. She has a half circumnavigations under her belt, and many hours of love and maintenance, she is as strong and reliable as ever.. The (few) problems common to older Pacific Seacrafts have all been addressed: some older models had problems with osmotic blistering on the hull (due to use of polyester resin). In 2015 the hull was stripped down and epoxy barrier coated to prevent osmostic blistering. Many older PSC report rusting out of the bottom of the main diesel tank. Indy had a new custom built SS tank installed in 2015. Lastly, many of the older PSCs had problems with the galley sink being below the waterline. We fixed this is 2020 with a custom built stainless sink.
Engine Yanmar 4JH3E 56 HP engine (1,568 hrs, 2014) MaxProp 3-blade bronze feathering propeller 2 Aluminum diesel tanks, total 245 L (65 gallon): 170 L (45 gallon) main tank replaced in 2014 75 L (20 gallon) custom on-deck tank
Equipment: Cutter Rigging Standing rigging replaced 2014 (NW Rigging) New chainplates (2021) Custom stainless stemhead fitting (2022) Running rigging replaced (2019) Dyneema running backstays/topiing lift (2019) Double line reefing from cockpit (2021) Yager 90% Furling Yankee (jib) (2014) Yager hank-on Staysail (2014) Yager battened mainsail (3 reefs) (2014) Drifter 130% 2.5oz ripstop with custom deck bag (2021) Stack pack for mainsail (2021)
Ground tackle Electric windlass Maxwell Primary anchor: Sarca Excel Spade anchor 20 Kg (44lb) 90 m (300ft) 5/16 G4 high test chain Stern anchor: Fortress FX 23 anchor 7 m (25 feet) chain 84 m (275ft) nylon rode
Comfort 2 Fresh water tanks of 133 L (35 gallon) 170 L (45 gallon), total 303 L (80 gallon) 60 L (16 gallon) holding tank Watermaker-SeaWaterPro 12v DC 20gal/hr (2021) Custom v-berth expansion (XL bed) (2021) 3 Burner Force 10 LPG stove oven w/ broiler (2015) Refrigeration/freezer (ice box conversion) (2015) Dickenson LPG Bulkhead heater (2015) Sure Marine Engine Coolant Heater Main Cabin (2015) Custom galley sinksingle basin, raised above waterline (2021) Cabin fans caframo x5 (2021) Pressure water
Electrics 675Ah House Battery bank (6x Trojan T105 225Ah 6v) (2021) 700W Solar Panels with individual Victron MPPT Controllers (2019-2022) Mastervolt charger/inverter MassCombi 12/2500-100 (2016) Blue Seas main distribution panel (2016)
Electronics and navigation instruments Chartplotter-Garmin GPSMap 742plus (2022) VHF-Standard Horizon GX2200 (2019) VHF Antenna and new low-loss cable (2021) AIS Antenna (dedicated) (2021) IridiumGo! with external antenna (2019) Autopilot- Autohelm ST3000 belt drive 2 Binnacle compasses (northern and southern hemispheres) Radar Furono 1621 Depthsounder AIS send/receive (2016) Monitor windvane with emergency rudder and extending cruising parts kit (2019)
Safety equipment Viking 4 person liferaft (2019) Dyneema jacklines and 2x tethers (2019) Crewsaver inflatable pfd/harness x2 (2019) New teak grab rails (2021) Dyneema lifelines (2022) EPIRB (ACR) (2019) Ditch kit (2019) 3 Fire Extinguishers (2019) Safety Flares (2019) Custom stainless cockpit railings (2020) Carbon monoxide detector (2019) Custom preventer system (2019) Hard dodger (new windows 2021) Rat Lines (2022)
Dinghy Achilles HB270FX Dinghy (Fiberglass bottom, folding transom) (2019) Dinghy Chaps (2021) Yamaha 8HP 4-stroke outboard (2019)
Miscellaneous Bimini Swim ladder Spare flexible solar PANELS 300w Extensive engine spares: starter motor, raw water pump, alternator, solenoids, thermostats, fuel lift pump, full gasket kit, etc Spare prop shaft, spare propellor Watermaker extended spares kit Epoxy barrier coat treatment (2015)
Last bottom paint: February 2023 (3 coats Seahawk Islands 99 Plus, and zinc coating to prop.)
Main strengths April 2023 survey available. Well maintained and well equipped boat. Many improvements. Ready to go !
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.
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
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.
SA/D = SA ÷ (D ÷ 64)2/3
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.
Ballast / Displacement * 100
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.
D/L = (D ÷ 2240) ÷ (0.01 x LWL)³
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.
Comfort ratio = D ÷ (.65 x (.7 LWL + .3 LOA) x Beam1.33)
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.
CSV = Beam ÷ ³√(D / 64)
From BlueWaterBoats.org:
Touted “the most expensive boat of its size” at her introduction in 1977, the diminutive Mariah 31 helped build Pacific Seacraft’s reputation for making quality boats. She was designed by the original co-founder of Pacific Seacraft, Henry Mohrschladt who only two years earlier kicked off the business with Mike Howarth building boats out of Howarth’s garage.
The Mariah 31 is a ridiculously sturdy boat, with hull thicknesses seldom seen in boats twice her length. We’re talking one inch at the topsides extending to 3 inches at the bilge, and deck thicknesses of an inch and a half (where you can hear owners complain they can’t readily find through-deck bolts long enough). As testament to her strength, Paul Lutus during his solo circumnavigation in Selene writes of surviving a blow with a semi-submerged shipping container without taking on any water, the impact had enough force to throw him clean off from his berth while he slept.
Not surprisingly she is heavy, requiring a lot of canvas hung from her 4ft bowsprit to keep her moving. Later MkII versions introduced a 5ft bowsprit. The interiors have a nice layout, loads of headroom and are finished in high quality teak.
Under sail she’s generally considered a slow boat, expect to clock regular 100 mile days in the trades with a well set up rig. She’s at her best on a reach, with 14-18 knots on the beam – expect a solid 6 knots. However with the wind from behind, her tub-like underbody and shoal keel doesn’t do much to reduce rolling motion which can get uncomfortably large.
Production ceased in 1983, the rumor was that the boat was too expensive to keep going. Before production ended a number of boats were sold as hull and deck kits and finished by their owners.
» Mariah 31 Yahoo Group, owner discussions.
» Confessions of a Long Distance Sailor by Paul Lotus, a solo circumnavigation in a Mariah 31.
» Mariah 31 Sea Trial by Earl R. Hinz, Sea Magazine, Aug 1978.
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