BoatsIW-Varvet Iw-40

IW-Varvet Iw-40

Masthead Sloop · Fin With Rudder On Skeg · First built 1975

A Sparkman & Stephens masthead sloop featuring a skeg-mounted rudder and a high ballast ratio for offshore stability

Designed by Sparkman & Stephens.

LOA
Beam
Draft (max)
Displacement
Ballast
Hull type
Fin With Rudder On Skeg

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 36 — a sea-kindly motion in a seaway.

Comfort ratio 36
CoastalBluewater

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

Capsize screening 1.70
LightHeavy

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

Displacement / length 327
EasygoingPowered-up

15.7 — moderate power for her weight; steady, all-round performance.

Sail area / displacement 15.7
TenderStiff

45% of her weight is ballast — stiff, standing up well to her sails.

Ballast 45%

Built heavy and sea-kindly — a boat made to cross oceans and forgive a rough night.

  • Heavier than ~75% of boats her size on file
  • Draws more than ~79% of boats her size on file

Compared with 2860 boats of the same type within a quarter of her length.

The record

Full specifications

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

Dimensions
Weights
Ballast / displacement
45.0%
Rig & sail area
Rig
Masthead Sloop
Ratios
SA / displacement
15.7
Displacement / length
327.4
Comfort ratio
36.1
Capsize screening
1.70
Hull speed
7.3 kn
Pounds / inch immersion
1231
Hull
Hull type
Fin with rudder on skeg
Construction
Fiberglass
Ballast type
Lead
Production
Years built
First built 1975
Designer
Sparkman, Stephens
Builder
IW-Varvet

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.

Warrior 4012.00 mSame hull familyNear-identical lengthA cutter-rigged cruiser with a skeg-hung rudder and a 1.52m draft, built for steady offshore passages
Colvic Craft Victor 4012.19 mSame hull familyNear-identical lengthA John A. Bennett-designed masthead ketch also known as the Blackwater 40, built for steady, comfortable passage-making
Hans Christian Christina 4012.14 mSame hull familyNear-identical lengthA fin-keeled cutter with a skeg-hung rudder, offering a more modern underwater profile for the Hans Christian fleet
Puma 38-K12.00 mSame hull familyNear-identical lengthA masthead ketch featuring a fin keel and spade rudder, offering a spirited sail area-to-displacement ratio
Valiant Yachts 40-212.16 mSame hull familyNear-identical lengthA Robert Perry-designed cutter built for offshore passage-making, featuring a skeg-hung rudder and a stiff, heavy hull
Dufour Yachts 405 Grand Large12.17 mSame hull familyNear-identical lengthA 12-meter cruiser featuring a 2.03m fin keel and a balanced displacement-to-ballast ratio for stable coastal passages

The family

Related models

The designs closest to hers — usually the rest of the builder's range, sometimes the same hull sold under another name.

Keep looking

Nothing filmed of this one yet

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