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Up for sale is our 1999 Beneteau Oceanis 381. We purchased Altair to sail the Bahamas for an extended honeymoon and just returned the last week of May 2022. Altair sailed and performed great for us from the Chesapeake to Florida and then the Bahamas. She is set up for cruising and being off the grid and is ready to go back out! We were never short on power with the solar panels and wind generator. Almost all of the equipment (including the engine) and sails have been serviced or updated recently and are noted below. ALL of the tanks (water, fuel, and blackwater) were drained, cleaned, and resealed in February 2022 before leaving for the Bahamas. Altair also comes with many spare parts desirable for cruising including a brand new alternator, refurbished Westerbeke spare parts kit, a brand new backup Autopilot, backup Tridata display, a new backup Jabsco Manual Toilet Pump, and more!
As of June 6th 2022, Altair is in the water and we are living aboard. We have scheduled some maintenance and will pull her out of the water for a week in June and available now for viewing.
Altair was hauled out in December to check the cutlas bearing prior to leaving the states. We also had the prop cleaned and coated in the process. The Dripless shaft seal was checked as well. No issues found.
Equipment: -Cruising Gear Kato dingy davits and engine lift (2019) Solar panels - 2 x 150 Watt (2019) Wind generator - Eclectic Energy D400 (2019) - Very Quiet compared to other manufacturers 2KW Raymarine Radar 24 mile range
-Deck and Hull Custom solid carbon fiber rudder post Electric windless with bow and helm controls Rockna 20KG Anchor (We had 35kt-40kt winds on anchor in the Bahamas this year and this anchor held great for us!) Additional 40 lb Bruce anchor 140 ft of anchor chain (Additional rode as well) Dodger and Bimini (We have all the pieces for a full enclosure, but they need new zippers.) Outboard bracket Cockpit table Sugar scoop with swim ladder at stern
-Galley & Head New galley faucet- 2022 12V top load freezer & side load refrigerator New freezer plate and compressor-2019 First Wave oven and 2 burner propane stove New propane line December-2021 Wet head with shower sump drain
-Electronics Autopilot Autohelm ST6000 internal drive Standard Horizon VHF Raymarine 2KW 24NM Radar Autohelm ST-50 Wind Instrument Autohelm ST-50 Tridata B&G Chartplotter with US and Caribbean Charts
-Electrical Victron MPPT Energy Controller 2018 Bluetooth capable 2 AMG Batteries 400 amp hours - (with the solar and wind generator we never needed shore power) Full 12V System 110V for plugging into shore power 20 amp battery charger LED overhead lights in salon Halogen overhead lights in cabin, fwd salon and galley
-Mechanical 43 HP Westerbeke 43B - 3736 hours Engine serviced per Westerbeke Maintenance Recommendations by certified technician - Feb 2022 This included removing and servicing fuel injectors, fuel injector lines, and fuel lines. Coolant flush performed. Oil, oil filters, and all fuel filters changed in accordance with maintenance manual recommendations. Runs great and no issues for us cruising Bahamas whatsoever. Spare parts kit replenished-2022. Spare fuel line purchased with spare alternator -Feb 2022. New starter switch - Feb 2022 New heat exchanger - 2020 Impeller recently changed - October 2021 Fuel tank cleaned and polished - Feb 2022 Dripless shaft seal Max Prop (Great if you end up needing a little extra push going into or out of an inlet) Manual bilge pump New electric bilge pump - Jan 2022 New bilge pump float switch installed Jan 2022 New fresh water pump - Jan 2022 New fresh water strainers throughout Jan 2022 Hot and cold water outdoor shower at stern 6 gallon hot water heater Manual pump marine toilet with spare pump as noted earlier Blackwater tank removed, cleaned, and resealed-Feb 2022 2 fresh water tanks 120 gallons total Both tanks cleaned and all fittings were removed and resealed- Feb 2022.
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)
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