2018 McConaghy Boats MC50 catamaran


East Setauket

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Class Sails
Category Catamaran, Multi-Hulls
Year 2018
Make McConaghy Boats
Length 50'
Propulsion Type Twin Inboard
Hull Material Composite
Fuel Type Diesel
Location East Setauket
Construction & Finish

Constructed using a controlled vacuum infusion process and pressed panels of E-glass, carbon composite and Corecell for strength, rigidity and weight efficiency.



Fully composite centreboard featuring push-button deployment with multiple settings. Flush with hull when retracted.



Carbon composite Longeron


Exterior Finish

Hull and deck painted in high quality two pack polyurethane coating in white as standard

Non-skid areas on the side decks

Below waterline surfaces finished with epoxy primer


Interior Finish

All joinery is custom built and finished to McConaghy Boats uncompromising high quality standards and under the expert guidance of interior designers - Design Unlimited

The modern interior is constructed using a mix of hand-painted surfaces with lighweight timber laminates and soft fabric liners

Accomodations of McConaghy 50 catamaran

Stairs to fly bridge with handrails

Recessed courtesy floor lighting

Tramsom Steps, port and starboard

Dual step down swim platforms


Saloon to Starboard

Designed to optimise panoramic views

L-shape settee with bench seats and dining table starboard

Corner L-shape settee forward adjacent to Nav Station

Cabin scatter cushions

Under seating storage

Navigation Station with Captain's chair forward

Stairs to Port & Starboard cabins

Choice of Headliners

Laminated sole

LED lighting throughout



Quality shower fittings

Vanity sink with cabinet

Mixer tap hot/cold


Electric toilet as standard

Hanging locker

110/230V AC Sockets


Midship Guest Cabin

Underdeck seaward facing double berth

Storage under berth

Overhead recessed down lights

Reading lights and lamps

Overhead hatch with custom blackout blinds and flyscreen  

Laminated sole

Hull and Head liners

Quality shower fittings

Vanity sink with cabinet

Mixer tap hot/cold


Electric toilet as standard

Hanging locker

110/230V AC Sockets


Mid ship lounge / Den

Twin seats, settee with cushions or Owner's office desk

Custom cabinetry featuring soft close drawers

110/230 V Sockets and USB sockets

Large TV Cabinet with flexible mounting (TV not included) or bookshelf


Aft Owner cabin 

Double Berth

McConaghy 50 Systems and Machinery

Four (4) Rule automatic bilge pumps (2,000 GPM each ) 

Two (2) Henderson MK 5 Universal Manual Bilge pump

Hot & cold pressure water

Two (2) Isotherm water heaters 40 Liter tanks slim  

One (1) Whale Universal Pressure pump 18L/M 45PSI

Black water tanks approx 3 x 60L 

Fresh water tanks approx 2 x 250L

Fresh Water Level Sensor

Holding tank sensor


Power Supply

One (1) Galvanic Isolator

Four (4) House Batteries (Endurant A4D 200A/H AGM)

Two (2) Main Engine Start Batteries  (Endurant A31DT)


Interior and Navigation Lighting and DC Power

Additional Information

Rudder and Steering

Balanced spade twin rudders

Self aligning bearings

Hydraulic Steering

Winches : Four (4) x Harken 60.3 STEA12V Electric Radial

Clutches: Sufficient for mainsail and jib

Jib Furler: Harken MKV1 Unit 3



Lewmar flush deck hatches


Anchoring & Mooring

One (1) Lewmar V4V5 electric windlass

One (1) 35kg anchor, 50m chain, and 50m warp

Six (6) x 200mm folding cleats


Misc Deck hardware

McConaghy custom composite stanchions 

Stainless steel life lines

Two (2) deck water fillers

Two (2) deck fuel fillers

Two (2) deck waste pump-out

Foredeck trampolines  



Aluminium mast, aluminium boom, anodized finish

Sails supplied by owner.


Running rigging and deck equipment

Running rigging and deck equipment for main sail and headsail

The Company offers the details of this vessel in good faith but cannot guarantee or warrant the accuracy of this information nor warrant the condition of the vessel. A buyer should instruct his agents, or his surveyors, to investigate such details as the buyer desires validated. This vessel is offered subject to prior sale, price change, or withdrawal without notice.
Speed and Distance
Cruising Speed
Max Speed
Nominal Length
Length Overall
Max Bridge Clearance
Max Draft
Total Power 114hp
Engine Type Twin Inboard
Fuel Type Diesel
HIN NEW Custom
2018 McConaghy Boats MC50 catamaran

This listing is for a brand new semi-custom built MC50 catamaran with 14 months from order.

McConaghy Multihulls need little introduction. They are well known to be the pre-eminent builders of high tech sailing and racing craft. The new McConaghy 50 Multihull forms the base of a new line of performance multihulls which promise a high level of ownership experience and lifestyle defining features. Available models are the Mc50, MC60, MC77 and MC90. The MC50 and the entire range has a Bureau Veritas classification - the highest global rating for ocean cruising.

The McConaghy 50 catamaran was designed from the ground up by a team of highly experienced sailors, engineers and designers. Jason Ker of Ker Yacht Design & Engineering, who was also responsible for last Americas Cup British BAR Racing entry designed this spectacular catamaran. The builder, Mark Evans and his team at McConaghy Boats are responsible for some of the most high tech racing machines and luxury superyachts in the world built for some of the most demanding customers and conditions.

The MC50 is a windspeed boat, which means she can approach cruising speeds which are very close to the True Wind. In a 15-knot breeze you will sail at 15 knots. Thanks to a meticulous control of weight owners will experience sailing unlike on any other catamaran. Sailing in utmost luxury at double digit speeds, effortlessly and safely.

Unlike many other high-performance catamarans the MC50 has been designed and engineered with safety as its core parameter. Potentially hazardous daggerboards which could create a hull breach have been avoided and replaced by a simple but highly effective push-button centerboard system a first in this luxury multihull market segment. In the retracted position the centerboard is completely flush with the hull, yet full deployed a high aspect draft of nearly 9 rivals the most efficient windward foils. In case of striking an underwater object, the centerboards will automatically raise and avoid damage to the hull structure. Thanks to her specially controlled vacuum infusion process of pressed panels of E-glass/Epoxy, carbon-hybrid composite foam construction the McConaghy 50 multihull is much lighter than similar length catamarans, yet she is luxurious, safe and immensely stiff. Like the last generation of Americas Cup foiling catamarans which are so strong and light that they do not need a fwd. crossbeam, the McConaghy 50s stiffness and full carbon longeron also allow for this elimination of the forward crossbeam, which further lightens this amazing yacht.

The McConaghy 50 multihull is a true luxury Grand Prix style yacht and has a multitude of innovative features, such as a completely opening, all glass aft salon doors and giant sliding side salon windows. This means that most of the time, even in pouring rain you can enjoy an open platform with full protection from the

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