BoatsSanibel 17/18

Sanibel 17/18

Fractional Sloop · Keel/centreboard · 1985–1988

A high-performance fractional sloop with a centreboard, evolved through multiple builders from the original Skippers Mate

Designed by Charles Ludwig, built by International Marine.

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

See her sail

The Sanibel 17/18, on the water

The fleet's own footage — the truest look at how she really moves.

Footage from Sailing Into Oblivion

Is it for you?

Character

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

TrailerableBeam 2.38 m — inside the 2.55 m no-permit tow width across most of Europe, and the 2.59 m US and Canadian limit. About 621 kg of hull, so roughly 1,200 kg on a trailer: check that against your own towing rating.Ramp-launchableAbout 621 kg of hull, with a keel that raises or a draught shallow enough to float off a trailer — she can go back on the trailer at the ramp, not only into the water.Shoal draughtDraws 0.30 m, board up where she has one — creeks, sandbars and thin anchorages most keels have to stay out of.
LivelySea-kindly

Her light displacement on a beamy beam gives 9 — a quick, lively motion that feels every wave.

Comfort ratio 9
CoastalBluewater

At 2.81 she sits above the 2.0 line — beamy for her weight, and happiest coastal.

Capsize screening 2.81
LightHeavy

179 — light for her waterline, so she is easily driven and quick to accelerate.

Displacement / length 179
EasygoingPowered-up

22.1 — a lot of sail for her weight; powered-up and eager, a real performer.

Sail area / displacement 22.1
TenderStiff

33% of her weight is ballast — on the tender side; she'll heel readily and want a reef sooner.

Ballast 33%

Light and lively — happiest day-sailing and coastal-hopping in settled weather.

What the fleet has seen

The Sanibel 17/18, as the fleet has seen it

Derived from the videos the fleet has analysed of this model. ▶ marks open the moment aboard.

The Sanibel 17/18 is a fractional sloop with a keel/centerboard hull, designed by Charles Ludwig and built between 1985 and 1988 by International Marine and Captiva Yachts. It has a length overall of 5.5 meters, a beam of 2.4 meters, and a displacement of 621 kg. The model evolved from the Skippers Mate, undergoing several name changes including Commodore 17 and Sanibel 17, before becoming the Sanibel 18. A derivative, the Snug Harbor 18, was later produced in small numbers. The Sanibel 17/18 has a comfort ratio of 8.6 and a sail area to displacement ratio of 22.1.

The living fleet

Sailed by the fleet

Where the fleet has filmed this boat.

Basemap © Wikimedia Commons · CC BY-SA 4.0

The record

Full specifications

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

Dimensions
Weights
Ballast / displacement
32.9%
Rig & sail area
Rig
Fractional Sloop
Ratios
SA / displacement
22.1
Displacement / length
178.9
Comfort ratio
8.6
Capsize screening
2.81
Hull speed
5.2 kn
Pounds / inch immersion
420
Hull
Hull type
Keel/Cbrd.
Construction
Fiberglass
Production
Years built
1985–1988
Units built
169
Designer
Charles Ludwig
Builder
International Marine, Captiva Yachts

Boats like this, on the water

More boats like her, on the water

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.

Phobos 196.30 mSame hull family0.9 m longerA lightweight, high-performance fractional sloop with a high sail-area-to-displacement ratio for spirited daysailing
Dufour Yachts T66.15 mSame hull family0.7 m longerA lightweight 800kg fractional sloop with a high sail-area-to-displacement ratio for spirited performance in light air
Marshall Marine Corporation Sanderling5.54 mSame hull familyNear-identical lengthA gaff-rigged catboat based on a 1941 design, featuring a shallow-draft keel-centerboard hull for versatile day sailing
Sandpiper 154.72 mSame hull family0.7 m shorterA Breck Marshall-designed gaff-rigged catboat with a high sail-area-to-displacement ratio for spirited light-air sailing
Farr 50005.08 mSame hull family0.4 m shorterA Bruce Farr-designed fractional sloop featuring a swing keel and a high sail-area-to-displacement ratio for lively performance

The family

Boats like this

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

Keep asking

The fleet has more to say

Search what's been said about the Sanibel 17/18, or ask a specific question — the answer comes back written out, with links to the moments it draws on.

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