BoatsGunfleet Marine 58

Gunfleet Marine 58

Masthead Sloop · Keel/centreboard, twin rudders · First built 2013

A masthead sloop featuring a keel-centerboard configuration and dual rudders for deep-water stability and control

Designed by Tony Castro.

LOA
Beam
Draft (max)
Displacement
Ballast
Hull type
Keel/CB w/dual Rudders

See her sail

The Gunfleet Marine 58, 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 44 — a heavy, notably soft motion offshore.

Comfort ratio 44
CoastalBluewater

At 1.67 she sits well under the 2.0 line — a solidly ocean-capable hull for her size.

Capsize screening 1.67
LightHeavy

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

Displacement / length 197
EasygoingPowered-up

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

Sail area / displacement 15.5
TenderStiff

30% of her weight is ballast — on the tender side; she'll heel readily and want a reef sooner.

Ballast 30%

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

  • Heavier than ~92% of boats her size on file
  • Draws more than ~81% of boats her size on file
  • Beamier than ~90% of boats her size on file

Compared with 105 boats of the same type within a quarter of her length.

What the fleet has seen

The Gunfleet Marine 58, as the fleet has seen it

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

The Gunfleet Marine 58 is a 2013-present masthead sloop designed by Tony Castro, featuring a keel/centerboard hull with dual rudders.0:13 With an LOA of 18.2 meters and a displacement of 30,999 kg, the vessel incorporates a cast iron centerboard and a hydraulic transom that converts into a swim platform.0:37 Aboard the 2018 Gunfleet 58 ELIAN, the deck layout includes a three-stage hydraulic Opacmare gangway, Selden hydraulic backstays, and Lewmar electric winches and windlass.0:32 Sail handling is managed with a Solent inner jib and an outer Reacher, supported by a continuous 2:1 halyard for a top-down furler.1:17 The cockpit features dual pedestals with integrated autopilot controls and a central table with an inset fridge.3:41 Below deck, the ELIAN offers a three-cabin layout, including a master suite with C-Zone digital switching.9:10 The engine room houses a Volvo Penta D3-150 engine, a Cummins generator, and a watermaker, while navigation is handled by a Garmin display, SSB, and VHF radio.6:29

The living fleet

Sailed by the fleet

Where the fleet has filmed this boat.

Seen once across one channel of the fleet.

Basemap © Wikimedia Commons · CC BY-SA 4.0

What broke, what changed

Gear aboard, as the crews told it

Moments from individual boats of this model that the fleet has filmed — one crew, one piece of kit, one day on the water. Not a review of the class, and not a count of anything.

Each line is one crew's account of their own boat. Another Gunfleet Marine 58 may be fitted out entirely differently.

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
30.3%
Rig & sail area
Rig
Masthead Sloop
Ratios
SA / displacement
15.5
Displacement / length
197.4
Comfort ratio
43.5
Capsize screening
1.67
Hull speed
9.8 kn
Pounds / inch immersion
3272
Hull
Hull type
Keel/CB w/dual rudders
Construction
Carbon reinforced GRP
Ballast type
Lead
Production
Years built
First built 2013
Designer
Tony Castro
Builder
Gunfleet Marine

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.

Irwin Yachts 65/6819.76 mSame hull family1.5 m longerA Ted Irwin-designed staysail ketch with a centerboard for shoal-draft cruising in a heavy, comfortable displacement
Southerly 57 RS17.72 mSame hull family0.5 m shorterA 17.72-metre flagship featuring a Solent rig and a lifting keel that allows for deep-water performance and shoal access
Little Harbor 6319.46 mSame hull family1.2 m longerA 19.46-metre ketch with a high comfort ratio of 42.56, engineered for stable, long-range offshore cruising
Hylas 7021.21 mSame hull family3.0 m longerA German Frers-designed masthead sloop with a keel-centerboard configuration built for high-performance blue water cruising
Bestevaer 56ST17.58 mSame hull family0.7 m shorterA Dykstra-designed aluminum lifting-keel cruiser built for serious offshore exploration and shoal-water access
Irwin Yachts 5416.46 mSame hull family1.8 m shorterA 16.46-metre staysail ketch with a 39.9 comfort ratio, built since 1988 for stable, long-range cruising

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 asking

The fleet has more to say

Search what's been said about the Gunfleet Marine 58, or ask a specific question — the answer comes back written out, with links to the moments it draws on.

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