BoatsAllied Boat Co. XL-2 42

Allied Boat Co. XL-2 42

Masthead Sloop · Keel/centreboard · 1969–1982

A Sparkman & Stephens masthead sloop featuring a keel-centerboard configuration for versatile performance in deep or shoal water

Designed by Sparkman & Stephens.

LOA
Beam
Draft (max)
Displacement
Ballast
Hull type
Keel/Cbrd.

Is it for you?

Character

Where this design lands on the numbers a shopper trusts — read straight from her own ratios.

LivelySea-kindly

Her heavy displacement on a narrow beam gives 31 — a sea-kindly motion in a seaway.

Comfort ratio 31
CoastalBluewater

1.78 — just under the 2.0 offshore line; her beam is modest for her weight.

Capsize screening 1.78
LightHeavy

315 — heavy for her waterline, built to carry stores and ride steadily.

Displacement / length 315
EasygoingPowered-up

18.4 — plenty of sail for her weight; lively and quick to respond.

Sail area / displacement 18.4
TenderStiff

41% of her weight is ballast — moderately stiff, a middle-of-the-road stability.

Ballast 41%

A capable cruiser that sits just inside the offshore line — coastal work with real passages in her.

The record

Full specifications

The complete reference set — tap any figure to switch between metric and imperial.

Dimensions
Weights
Ballast / displacement
41.2%
Rig & sail area
Rig
Masthead Sloop
Ratios
SA / displacement
18.4
Displacement / length
315.2
Comfort ratio
31.4
Capsize screening
1.78
Hull speed
7.2 kn
Pounds / inch immersion
1192
Hull
Hull type
Keel/Cbrd.
Construction
Fiberglass
Ballast type
Lead
Production
Years built
1969–1982
Designer
Sparkman, Stephens
Builder
Allied Boat Co

Boats like this, on the water

Nobody has filmed this one — but these are close.

Comparable boats the fleet has on camera: same type, within a quarter of her length. Open the boat, or watch the video — a timestamp means she only appears in passing.

Pearson Yachts 4012.17 mSame hull family0.5 m shorterA 12-metre masthead sloop with a deep 2.87-metre draft and high ballast ratio, built for stability and speed
OPB: Sailing Across the Sea of Cortez in a Pearson 40 (Feb 2026)1:34from keeldragger
Southerly 11010.82 mSame hull family1.8 m shorterA Rob Humphreys-designed fractional sloop with a swing keel that allows for shallow-water exploration and drying out
Southerly 110from SVN solovelanet
Tartan Marine 34 C10.49 mSame hull family2.2 m shorterA Sparkman & Stephens masthead sloop featuring a keel-centerboard hull designed for shoal water and IOR competition
Sailing Hiraya Ep:6 Composting toilet! Natures head.from Sailing Adventure Can't Wait
Bristol Yachts 41.112.54 mSame hull familyNear-identical lengthA masthead sloop with a deep 3.05-metre keel-centreboard draft, bridging the gap between the 411 and 43.3 models
Ep 34 Interview with Brent0:49from Sailing Into Oblivion
Ovni 4012.60 mSame hull familyNear-identical lengthA 12.6-metre cutter with a high 25.21 sail-area-to-displacement ratio, built for agile performance during her 1984-1987
Ocean Voyager 40 - A Yacht Delivery from Sri Lanka to Thailand0:49from Halcyon Yachts - International Yacht Delivery
Pearson Yachts 3510.67 mSame hull family2.0 m shorterBoasting the longest production run of any Pearson model, this keel/centerboard sloop remained largely unchanged for 14 years
The ONE Thing We Disagreed on This Entire Refit | Step 494from Sailing Uma

The family

Boats like this

Nearby designs by size, type, and era — worth a look alongside her.

Allied 39A masthead sloop with a fin keel and skeg-mounted rudder, evolved from the wooden Owens Cutter designAllied Boat Co. Mistress 39A heavy-displacement Arthur Edmunds ketch available in both aft and centre cockpit configurations for stable cruisingAllied Boat Co. Seawind MK II KetchA heavier, beamier evolution of the original Seawind, available in ketch, cutter, or sloop configurationsAllied Boat Co. Seawind MK II CutterA cutter-rigged evolution of the Seawind 30, featuring a long keel and heavy displacement for stable, traditional cruisingAllied Boat Co. SeawindA Thomas Gillmer-designed masthead ketch with a long keel, marking both the beginning and the end of the Allied Boat Co.Allied Boat Co. Inc. Seabreeze 35A MacLear and Harris-designed masthead sloop featuring a versatile keel-centerboard configuration for shoal-draft cruising

Keep looking

Nothing filmed of this one yet

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Search the fleet for boats like thisAsk the fleet about the Allied Boat Co. XL-2 42

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