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Seller's Description

Many recent upgrades include: New anchor rode and anchor bracket for Danforth anchor 2023 New head installed 2022 New waste pipe with vented loop installed 2022 Front hatch replaced 2022 New forward side ports installed 2022 Interior cabinet hinges replaced 2022 Sole refinished 2023 Bilge pump replaced 2022 New Yanmar 2YM15 installed 2015 280 hours Cushions professionally cleaned 2022 Interior woodwork cleaned and oiled 2022 & 2023 New main sail 2018 North sails loose foot, full batten Tiller refinished 2022, new tiller cover 2023 Cockpit sole refinished 2023 New dodger 2018 Dodger connectors new 2022 Bimini installed 2023 with side rain deflection Raymaine ST2000 tiller pilot refurbished 2023 by Raymarine New sailcover 2023 Reefing lines, out haul and topping lift replaced 2023 Roller furling line replaced 2022 Back stay adjustment line replaced 2022 Jib sheet replaced 2022 Companionway rebuilt 2022 & 2023 New fenders and dock lines 2022 New vhf with AIS 2016 Standard Horizon CP390i Chart plotter 2015 New vhf antenna with mast wiring 2022 Mast head wind indicator added 2022 Running lights and anchor lights replaced with LED 2022 Mast wiring replaced 2022 Genoa cars replaced 2023 Stern refinished 2023 Teak cockpit coaming refinished 2023 130 % Genoa on profurl 1998 New custom winter cover 2022 Cradle pads rebuilt 2022 New swim ladder 2022 Decks refinished 2023 10.5 inflatable Dinghy

Equipment: Raymarine tiller pilot Chart plotter New Engine (Yanmar 15) New Dodger and Bimini

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Specs

Designer
Robert Perry
Builder
Ouyang Boat Works
Association
Aloha Owners
# Built
?
Hull
Monohull
Keel
Fin
Rudder
Spade
Construction
FG

Dimensions

Length Overall
27 0 / 8.2 m
Waterline Length
22 6 / 6.9 m
Beam
9 6 / 2.9 m
Draft
4 3 / 1.3 m
Displacement
5,200 lb / 2,359 kg
Ballast
2,000 lb / 907 kg

Rig and Sails

Type
Sloop
Reported Sail Area
328′² / 30.5 m²
Total Sail Area
324′² / 30.1 m²
Mainsail
Sail Area
163′² / 15.1 m²
P
31 9 / 9.7 m
E
10 2 / 3.1 m
Air Draft
?
Foresail
Sail Area
161′² / 15 m²
I
29 11 / 9.1 m
J
10 9 / 3.3 m
Forestay Length
31 10 / 9.7 m

Auxilary Power

Make
BMW, Volvo or Westerbeke
Model
?
HP
?
Fuel Type
Diesel
Fuel Capacity
12 gal / 45 l
Engine Hours
?

Accomodations

Water Capacity
24 gal / 91 l
Holding Tank Capacity
?
Headroom
?
Cabins
2

Calculations

Hull Speed
7.5 kn
Classic: 6.36 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

7.5 knots
Classic formula: 6.36 knots
Sail Area/Displacement
17.5
16-20: good performance

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.
17.48
<16: under powered
16-20: good performance
>20: high performance
Ballast/Displacement
38.5
<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

38.45
<40: less stiff, less powerful
>40: stiffer, more powerful
Displacement/Length
203.7
200-275: moderate

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
203.65
<100: ultralight
100-200: light
200-300: moderate
300-400: heavy
>400: very heavy
Comfort Ratio
17.0
<20: lightweight racing 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
16.99
<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
2.2
>2.0: better suited for coastal cruising

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
2.17
<2: better suited for ocean passages
>2: better suited for coastal cruising

Notes

ALOHA 27, 26, 8.2, and 271, are similar.
Photo courtesy Adam Hunt.

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