BoatsOyster Marine 575

Oyster Marine 575

Masthead Sloop · Fin keel, spade rudder · First built 2010

A Rob Humphreys-designed masthead sloop built for offshore passage-making with a high sail-area-to-displacement ratio

Designed by Rob Humphreys.

LOA
Beam
Draft (max)
Displacement
Ballast
Hull type
Fin w/spade Rudder

See her sail

The Oyster Marine 575, on the water

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

Footage from Berthon International

Is it for you?

Character

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

LivelySea-kindly

Her moderate displacement on a narrow beam gives 41 — a heavy, notably soft motion offshore.

Comfort ratio 41
CoastalBluewater

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

Capsize screening 1.70
LightHeavy

191 — moderately heavy for her waterline, a balanced cruising weight.

Displacement / length 191
EasygoingPowered-up

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

Sail area / displacement 22.4
TenderStiff

31% of her weight is ballast — on the tender side; she'll heel readily and want a reef sooner.

Ballast 31%

A capable offshore cruiser with an easy motion when the sea gets up.

  • Heavier than ~91% of boats her size on file
  • Draws more than ~86% of boats her size on file
  • Beamier than ~87% of boats her size on file

Compared with 823 boats of the same type within a quarter of her length.

What the fleet has seen

The Oyster Marine 575, as the fleet has seen it

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

The Oyster Marine 575 is a 17.9-meter masthead sloop designed by Rob Humphreys and built by Oyster Marine and Landamores Yacht Builders since 2010. It features a fin keel with a spade rudder, a 5.0-meter beam, a 2.7-meter draft, and displaces 26,499 kg. The model offers shoal draft options, including a 2.06-meter draft or a SuperShoal centerboard option that can be raised to 1.65 meters or lowered to 3.82 meters. Aboard *Dreamer of Hamble*, a 2010 model, the boat is equipped with a triple-spreader Formula Spars rig, a 2021 Dolphin sail inventory including a cruising chute and asymmetric spinnaker, and a Lewmar Commander power pack for sail handling.1:51 This vessel uses a 130-horsepower turbo engine, an Onan 9.5kW generator, and a 2024 Raymarine navigation suite.4:12 The interior of *Dreamer of Hamble* features honey teak finishes, a Force 10 cooker, Fridge-o-matic refrigeration, air conditioning, and BGAN satellite communications.3:31 The Oyster 575 *Sophisticate* features an oak interior, a hydraulic Reckman furling system, a carbon Formula One spinnaker pole, and a fully electric galley with a Neff induction cooktop and a Fisher-Paykel dishwasher. *Sophisticate* also includes a dedicated workshop and storage area.0:11

The living fleet

Sailed by the fleet

Where the fleet has filmed this boat.

Seen 2 times across one channel of the fleet.

Basemap © Wikimedia Commons · CC BY-SA 4.0

On the water

The Oyster Marine 575 on video

What they go for

Market signal

Where the fleet has seen this model come up for sale.

1seen for sale

From the fleet's own footage — our observed signal, not broker listings.

The record

Full specifications

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

Dimensions
Weights
Ballast / displacement
30.6%
Rig & sail area
Rig
Masthead Sloop
Ratios
SA / displacement
22.4
Displacement / length
190.9
Comfort ratio
40.5
Capsize screening
1.70
Hull speed
9.6 kn
Pounds / inch immersion
3022
Hull
Hull type
Fin w/spade rudder
Construction
Fiberglass
Ballast type
Lead
Production
Years built
First built 2010
Designer
Rob Humphreys
Builder
Oyster Marine, Landamores Yacht Builders

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.

Hylas 5718.14 mSame hull family0.3 m longerA modern Solent-rigged cruiser featuring a bulb keel and dual rudders for precise handling at 18 metres
Should We Build our Aluminum Catamaran in TAIWAN? - (Episode 382)12:45from Sailing Parlay Revival
Jeanneau Yachts 5717.78 mSame hull familyNear-identical lengthA Philippe Briand-designed bluewater cruiser built for comfort and stability on long-distance passages
Jeanneau 57 - Getting ready to sail this beautiful yacht on delivery from Hamble to Corfufrom Halcyon Yachts - International Yacht Delivery
Oyster Yachts 56518.09 mSame hull family0.2 m longerA Humphreys-designed bluewater cruiser featuring a high-performance fractional rig, dual rudders, and a bulb keel
Oyster 565 - A Yacht Delivery from Croatia to UK12:33from Halcyon Yachts - International Yacht Delivery
Discovery Yachts 5817.90 mSame hull familyNear-identical lengthA Ron Holland-designed blue water cruiser featuring a high-comfort ratio and a stable, fractional sloop rig
[OFF MARKET] Discovery 58 “LUNA OF SARK” Yacht for Sale | No.2 of the Series | Tour with Sue Grantfrom Berthon International
Hylas 6018.04 mSame hull family0.2 m longerA German Frers-designed performance cruiser featuring a modern dual-rudder configuration for precise offshore handling
Yacht Delivery Adventures - Everything from a Hylas 60 (US to Oz) to a Broom 38 (London to Solent).6:09from Halcyon Yachts - International Yacht Delivery
Beneteau 5717.80 mSame hull familyNear-identical lengthA high-performance Farr-designed cruiser featuring a powerful fractional rig and a balanced, stiff hull for fast passage-making
Vanishing Pointfrom Flight Level Zero

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.

Oyster Marine 675A 21-metre masthead sloop featuring a deep 2.95-metre bulb keel and a high sail-area-to-displacement ratio for speedOyster Marine 625A Rob Humphreys-designed masthead sloop built for high-performance blue water cruising with a stiff, comfortable motionOyster Marine 475A Holman & Pye designed masthead sloop evolved from the 46, offering a high comfort ratio for blue water cruisingOyster Yachts 595A 19-metre cruiser with a high comfort ratio of 40.21, engineered for stable, long-distance passage-makingOyster Yachts 565A Humphreys-designed bluewater cruiser featuring a high-performance fractional rig, dual rudders, and a bulb keelOyster Marine 745A Rob Humphreys-designed fractional sloop featuring a high-volume hull with dual rudders for stable, long-range cruising

Keep asking

The fleet has more to say

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