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Seller's Description

Beautifully built boat with a reputation that precedes her. “Luna” is a 1976 Allied 42 XL-2. She is #22 of 28 built, she is a rare vessel. An extensive exterior refit was performed in 2001. Interior refit was performed in 2020. Photos of both can be provided privately. Reliable Westerbeke 40 with 1017 hours on the meter. Numerous spares included in sale. Centerboard boat, she draws only 4’2” board up, allowing to anchor or navigate in very skinny waters of the Chesapeake Bay or Bahamas.

Equipment: Engine: Westerbeke 40 diesel engine. Hurth transmission. Racor 500 off-engine filter. 55amp alternator replaced 2022.

Tankage: 40 gallon diesel stainless tank. 2x50 gallon water tanks. 5 gallon hot water heater.

Galley: Electric water pump for galley and head sinks. Deep stainless galley sink. 2 burner alcohol stove.

Electrical:Onboard Wi-fi. AIS.Spreader lights. All LED navigation lights. All LED interior lighting. 400W solar input. 1000W inverter. 3 group 27 house batteries. 1 group 27 starter battery. 20AMP house bank charger. Single 30AMP house input. Furuno radar (needs installation). Garmin 742 on binnacle.

Head: Nature’s head composting toilette. Full length mirror. Bowl sink. Wood counter. Bamboo grates.

Anchoring: Ideal windlass, rebuilt 2021. 65lb Mantus M1 Anchor. 30’ 3/8” chain 2022. 100’ 3-strand 3/4” rode. Spare Fortress FX-23 on transom. 10’ chain. 100’ 3-strand 1/2” rode. Single anchor on bow roller.

Cockpit: Full cockpit bimini with 3 sided zip on surrounds. Weather cloths. Soft dodger with isinglass replaced 2021. Wood Edson steering wheel. CPT Autopilot 2021. Teak varnished deck grates. 4 scuppers. Traveler and 4 point mainsheet in front of helm for easy adjustment. Barient self-tailing primary winches. Barient standard winches secondary.

Deck: White painted nonskid. Vinyl coated wire lifelines replaced 2020. Life-raft deck mounted holder. Teak toe rail. Teak handles. 2 large opening deck hatches(lexan replaced 2021). 6 opening ports. 4 sealed ports. Deck hatches and portholes rebedded 2021.

Rigging/sails: All shroud chainplates replaced 2021. Mizzen mast removed 2021 included in sale. Harken roller furling genoa. 150% genoa. 170% genoa. Drifter in sock. Symmetrical spinnaker in bag.

Hull: Centerboard removed and rebuilt 2020. 2 seacocks/thru hulls replaced 2020. Awl-grip black 2001. White boot stripe. Teak rub-rail. Rudder tube rebuilt 2021.

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Specs

Designer
Sparkman & Stephens
Builder
Allied Boat Company Inc.
Associations
?
# Built
?
Hull
Monohull
Keel
Stub + Centerboard
Rudder
?
Construction
FG/solid laminate

Dimensions

Length Overall
41 11 / 12.8 m
Waterline Length
29 0 / 8.8 m
Beam
11 6 / 3.5 m
Draft
4 2 / 1.3 m 4 2 / 1.3 m
Displacement
17,220 lb / 7,811 kg
Ballast
7,100 lb / 3,221 kg (Lead)

Rig and Sails

Type
Sloop
Reported Sail Area
763′² / 70.9 m²
Total Sail Area
763′² / 70.8 m²
Mainsail
Sail Area
367′² / 34.1 m²
P
42 5 / 13 m
E
17 3 / 5.3 m
Air Draft
?
Foresail
Sail Area
396′² / 36.8 m²
I
47 11 / 14.6 m
J
16 6 / 5 m
Forestay Length
50 9 / 15.5 m

Auxilary Power

Make
Westerbeke
Model
?
HP
40
Fuel Type
Diesel
Fuel Capacity
30 gal / 114 l
Engine Hours
?

Accomodations

Water Capacity
100 gal / 379 l
Holding Tank Capacity
?
Headroom
?
Cabins
2

Calculations

Hull Speed
7.4 kn
Classic: 7.22 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

7.43 knots
Classic formula: 7.22 knots
Sail Area/Displacement
18.3
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.
18.31
<16: under powered
16-20: good performance
>20: high performance
Ballast/Displacement
41.2
>40: stiffer, more 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

41.24
<40: less stiff, less powerful
>40: stiffer, more powerful
Displacement/Length
315.1
275-350: 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
315.12
<100: ultralight
100-200: light
200-300: moderate
300-400: heavy
>400: very heavy
Comfort Ratio
31.1
30-40: moderate bluewater cruising 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
31.13
<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
1.8
<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
1.78
<2: better suited for ocean passages
>2: better suited for coastal cruising

Notes

Yawl Rig:
I: 48.00’ / 14.63m
J: 16.50’ / 5.03m
P: 42.50’ / 12.95m
E: 15.25’ / 4.65m
PY: 22.50’ / 6.86m
EY: 7.77’ / 2.37m

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