McConaghy MC100 (2026) for sale in Factory, China

£18,139,151 GBP
Listed price $22,725,000 USDGet a foreign exchange quote

AI-generated summary

The McConaghy MC100 is a cutting-edge 100-foot catamaran, carrying the McConaghy Multihull series into superyacht realms with its exceptional style and eco-efficiency. Manufactured in 2026 and stationed in China, this vessel embodies world-class innovation in both sailing and onboard comfort. Designed by Jason Ker, the MC100 combines lightweight engineering with carbon components to ensure performance and reduced environmental impact. Key features include a Hall Spars hybrid mast, ECsix carbon rigging, and a comprehensive electrical and monitoring system built by McConaghy. With its configuration as a sloop rig, accommodations for silent power running, and safety-rated for bluewater expeditions, it harmonises luxury with practical sailing experience.

General information
Make/model
McConaghy MC100
Category
Used sail boat for sale
Price
£18,139,151 GBP | Listed price $22,725,000 USDGet a foreign exchange quote
Year
2026
Length overall
30.48 metres
Hull
Carbon Fibre hull
Location
Factory, China

About this McConaghy MC100

English


Top of the range is an understatement when it comes to describing the MC100.
This magnificent 100-foot catamaran takes the McConaghy Multihull series into superyacht territory with superlative style and eco-efficiency.

Following the proven concept of the MC line of multihulls, the MC100 retains that ability to truly sail the yacht when at sea, whilst also offering exquisite comfort, luxury and space within the social areas..
The MC100 is World class.

Rig

Sloop

SPARS, RIGGING & SAILS

Hall Spars Hybrid modulus mast

Standard modulus ultra wide-rack boom

ECsix carbon standing rigging

Running rigging allowance USD 60,000.00 included

Sails owner supplied

Broker comments

From the designer, Jason Ker of KER Yacht Design

“I’m passionate about designing boats that give their owners a wonderful on water experience.

“I’m a sailor and if I know in my heart that I would have a fantastic time on board with my friends and family… then I know I’ve got the design right. I also get really excited about the best use of space, especially when you engineer a boat to be lighter.

On a multihull a small weight increase has a big impact… so we’ve worked really hard to save weight. For example we’ve used carbon where it makes a difference.”

“It’s wonderful to work with the shipwrights at McConaghy."

“This team are vastly experienced in building catamarans which are much lighter than the average cruising cat… yet safe, secure and stiff.”

The MC range has Bureau Veritas classification for blue water sailing – the highest global rating.

ELECTRICAL SYSTEMS

McConaghy will complete the full electrical design. McConaghy will supply the main switchboards and monitoring equipment as well as the PLC based monitoring and control systems. McConaghy will supervise the electrical install and complete all electrical commissioning on the vessel.

1401 AC Power

? 1 x Generator

? 1 x Shore inlet up to 63 Amp

? 1 x Galvanic Isolator ( Isolation transformers can be added if prefered)

? 3 x Mass Combi Pro 24/3500 Inverter Chargers ( Total output continuous 10,500 watt )

? 1 x ACMI Main switchboard to handle all AC mains and provide transfer by auto and manual functions.

? 4 x ACOI AC subboards to provide AC circuit control and monitoring to sub circuits

? Relevant protections

1402 DC Power

? 8 x Mastervolt MLI 24/5500 Lithium batteries ( house )

? 1 x Mastervolt MLI 24/5500 Lithium batteries ( Radio / Emergency battery )

? DC/DC Converters for network and navigation equipments

? Remote Battery switch control of house and start batteries

? 3 x Mass Combi Pro 24/3500 Inverter Chargers ( Total 300 Amps charge at 24V )

? 2 x Delstar / Bermantec 240Amp house alternators with Mastervolt Alpha Pro III regulators

? Battery chargers for start batteries

? Emergency parallel between engine start systems

? Custom bus bars for main positive and negative connections

? Relevant fusing and protections for all major distribution cables

1403 Monitoring and Alarms

? 1 x Czone touch 10 Display

? 1 x Czone touch 5 Display

BEP Czone for DC control and monitoring functions of the vessel Qty to be confirmed based on the final load list.

Network Design Parameters:

? NMEA 2000 and Masterbus Network linking devices for complete power systems control and monitoring.

? Centralized touch monitoring and control screen

The system is designed to allow for silent running to a continuous power of 10kw.This is achieved by utilizing Mastervolts 24/5500 Lithium batteries together with 3 x Mass Combi Pro 24/3500 Inverter chargers.

The house bank has a usable battery capacity of 1280 amps. The system is expected to run for approximately 9 hours by battery whilst running with a load average of 3.3kw.

The engines will be fitted with 2 x 24 volts 240 Amp Alternators and Mastervolt Regulators to allow for a total recharge of 480 Amps or approximately 11kw.

This will allow the systems to be run whilst the engines are running without the need to start the generator. This is possible provided the electrical loads are within the available power output of the inverters.

The ACMI mains panel will allow the AC system to be easily managed and allow the use of a generator auto start function to be activated using programmed logic.

The system will also be able to manage loads when required for example when the load is required to be taken off the generator for use of the thruster via a PTO. The system will have touch screen control via the C-zone Touch 10 located in a common

area and touch 5 located in a technical space for diagnostics and redundancy. Systems can also be controlled via push buttons where dedicated controls are needed. All circuits can be safely manually bypassed in an emergency or fault situation.

There will be a dedicated radio / emergency battery which when activated by the emergency bypass will power communications and critical equipment via a manual switch panel. These items will be able to be controlled via a traditional style switch panel when in bypass mode and will offer simple yet reliable redundancy for critical systems.

1404 Lighting

The lighting shall be LED.

1405 Power Outlets

Power outlets will be located throughout the vessel.

1406 Cables

All cables are sized in accordance with manufacturers' recommendations and are selected to comply with standard electrical regulations allowing for voltage, maximum current, length and voltage drop. Cables are selected to the highest specification to provide long durability and high safety margins. Light weight cables shall be used where possible.

Electrical designation and marking: All cables are marked at both ends with alphanumeric code to correspond with the ships circuit diagrams. Individual cores are coded similarly.

Cable routes and supports: Wherever possible cables follow a common service route with other services, and are accessible for maintenance purposes. Cables run on cable trays and in ducts secured to the structure, and are placed as high as possible and out of bilge areas. Where cables pass through watertight or fireproof bulkheads appropriate thru-bulkhead glands are used.

Cables will be attached to cable trays and fastened with Tie-wraps.

Separation will be insured between A/V lines and power lines.

Main power distribution lines (EG, Generators, Propulsion motors, thrusters, and large sub panels) will be separated out and run in independent cable trays without wires on top and room all around for cooling.

1407 Navigation and Communication

Owner Supplied

1408 Entertainment

Owner Supplied

MECHANICAL & SYSTEMS

McConaghy will provide systems design.

In general, access to the machinery and pumps is carefully taken into account during the detailing process. Removable Panels are provided to allow service access to all systems, valves, junction boxes etc.

All vibrating or moving items are, as far as is practical, fitted on anti-vibration mounts. All vital equipment such as bilge pumping, fire-fighting equipment, transfer of fuel, freshwater, black water, has the provision to work from a second reserve pump in order to ensure maximum safety.

All pipes in the machinery space are polished, painted or plastic coated and marked with the system number. Labels are used to show the direction of flow and the contents of the pipes. Pipes carrying cooled or heated liquids are insulated as appropriate.

Pipes are laid out where possible along the centerline under the floor and orthogonally, flow restrictions are minimized and care taken to ensure that drain points are accessible.

Clamps bolted to the structure will support them and in accommodation space they will be isolated from the pipe hangers with nylon, or equivalent, saddles. Where pipes pass through a watertight bulkhead the penetration will be watertight. All valves are individually identified and pipe and valve names are shown on the system diagrams.

1301 Propulsion and Thrusters

Main Engines

2 x Yanmar 4LV230 with KMH50V gearboxes

2 x 110Amp 24V alternators.

2 x Glendining electronic throttle controls

Shafts and Propellers

Bow Thruster

2 x Lewmar hydraulic bow thrusters 300VRTTH

1301.01 Exhaust Systems

The engine cooling water is discharged to the exhaust. The exhausts feed through water locks and then water drop mufflers. The water is removed and the exhaust led aft to exit via the hull above water line.

The generator cooling water is discharged to the exhaust. The exhausts feed through water locks and then water separator. The water is removed and the exhaust led aft to exit via the hull.

1302 Generators

One generators 27kW Onan model:MDKDU27 is installed in the engine room with the following specification:

Vibration mounts

Control of these units will be from the navigation control screens

1303 Fuel and Oil (Lube) System

Two tanks (2600L total) plus two day tanks (200L each) are built into the structure

Fuel will be filled from two (port &stbd) fill point/located on side deck.

Each tank is fitted with a vent.

The fuel is led via valves to a transfer pump and uses a polishing system (Separ fuel polisherSWK-2000/5 MK ) before entering the day tank.

The main engines and generators are fed via a manifold from the day tank to Racor500 fuel filters for each consumer. All fuel return is returned to the day tank.

Each tank will be fitted with a suitable level sensor monitored by the vessel alarm and monitoring system and will provide a low level alarm.

1304 Plumbing System

The potable water tanks will be filled from two (Port and Stbd)fill point/dock connection located onside deck.

Two Sea Recovery Aqua Matic 1800-2 water makers will be installed. The water makers will be interfaced with the monitoring system to alarm on fault.

There will be a vent to each tank. The tanks will be piped and valved to allow water to be drawn from either tank.

Crossover pipes complete with isolation valves shall be installed athwart ships on fresh water tanks to allow the entire system full cross over operation.

Each tank will be fitted with a suitable level sensor monitored by the vessel alarm and monitoring system and will provide a low level alarm.

There will be a DC 24V potable water circulation pump (MXHM204 Calpeda) to circulates water and a AC 230V pump for deck wash , outlet on aft deck and foredeck (opposite side).

Two (2) Isotherm water heaters – 75 Liter tanks each.

Generator waste heat exchangers for heating of hot water.

1304.01 Black water System

The system comprises of two black water tanks (300L each).

The heads to be flushed with fresh water only and self-contained with respect to their motors and pumps

One deck black water discharges with a connection each side of the deck.

One hull black water discharge with waste discharge pump siphon breaker & electric ball valve & through hull fitting each side of hull.

The black water tank will be provided with a high level electric alarm and manual/auto pump mode.

Each black water tank vent through charcoal filter via to the highest possible place on the mast.

1304.02 Grey water System

The system comprises of two grey water tanks (400L each).

All grey water supplies will be drained, if possible, naturally to the grey water tanks. All supplies will enter system via smell traps.

One hull greywater discharge with waste discharge &siphon breaker & electric ball valve & through hull fitting each side of hull.

Wash machine can be discharge to both grey water tank and discharge directly to the sea.

The greywater tank will be provided with a high level electric alarm and manual/auto pump mode.

1304.03 Bilge System

Three Rule automatic bilge pumps(2,000 GPM each) each hull, one forward , one midship , one in engine room.

One Henderson MK 5 Universal Manual Bilge pump in each room.

A portable diesel engine powered fire/bilge pump will be provided and stored in a deck locker

1304.04 Seawater System

Seawater strainer inlet boxes will be fitted in the engine room. Inlet box lids will be well above the waterline. The strainers shall be of composite construction.

1305 Fire System

Delta-T Engine room ventilation:

Two700-A60SL-14 dampersand dampers for air out.

Two 700-A60SL-17 Delta T dampers and9" fans for air in.

Fireboy:

Two MA0400NVC Auto/Manual fire protection fluid system.

Two MA0150NVC Auto/Manual fire protection fluid system.

Two E-4209-18 Circuit engine shut down.

Two Esc-0640-04D engine shut down control.

1306 Hydraulic Systems

Hydraulic power packs are to be used for centerboard, headsail furler, staysail furler, genoa furler, mainsheet inboom ram

Lewmar hydraulic bow thruster 300VRTTH 30CC 450 STROKE

harken pop up winch 2500CLR

Lewmar windlass V8 primary windlass

Lewmar windlass V4/5 secondary windlass

Hydraulic power will come from the commander with a PTO pump, PTO pump fit to engine or generator.

1307 Pneumatics

A single Bauer 3-phase Oceanus dive compressor will be supplied for dive tank filling; fresh air from the compressor will come from a ducted system to outside of the vessel.

1308 Refrigeration

? 1x Fridge

? 1x Freezer

? 2x bar fridges

1309 Heating and Air Conditioning

Total of max 270K BTU

15air handlers in total

1310 Machinery Space

The main machinery space/engine room houses main engine and V-drive, hydraulic power pack, Chilled Water compressors, Water maker, bilge pump, Start batteries and Battery chargers.

All engine room bulkheads, tank sides and vertical surfaces, as well as the deck head, are clad with thermal insulation and soundproofing.

Bilges are to be painted 2 component snow white or grey depending on the owner’s choice.

1311 Machinery Space Ventilation

Fresh air will be ducted into the machinery space from air intakes in the superstructure sides.

The engine air intake ducts will have sufficient up stand to prevent water from entering them.

Hot air to be removed from engine room through ducts located high up in the engine room feeding out through an exhaust duct in the superstructure side. Air to be distributed around the ER as much as possible.

The induced draft principle will be employed as per the engine manufacturer's instructions.

When Delta-T Engine room ventilation selected, Two auto/manually operated fire dampers and fans will be fitted to the machinery space ventilation ducts. These shall be operated from outside of the engine room. In the event of the Novec being released the machinery space ventilation fans will automatically be shut down.

1312 Anchoring and Anchor Stowage System

Primary windlass Lewmar V8

105kg primary Anchor

Galvanize anchor chain 14mm: 100m

Secondary windlass Lewmar V4

38kg primary Anchor

Galvanize anchor chain 12mm: 30m

1313 Mechanically Operated Doors and Windows

TBC

1314 Tender launch

Hydraulic Tender launch as per rendering

Overview

The lightweight design follows the exterior lines that are now well established across the range, and progresses these with inclusion of an extensive aft deck space and hydraulic beach club platform.

Retaining a sleek and low profile, the MC100’s flybridge is the boat’s crowning glory, providing an elevated position for the dual helm and a spacious seating area that benefits from this higher vantage point.

The use of glass becomes all the more prominent with the MC100 design’s and UV reflective glazing runs the length of the boat on both the port and starboard sides. Extended skylights in the forward portion of the flybridge fill the saloon with natural light and enhance the visual connection between sea and sky.

Aboard the MC100, one can enjoy a luxurious lifestyle with an array of desirable amenities. There’s a forward Jacuzzi nestled between sumptuous sun pads, both exterior and interior bar counters, a huge TV screen ingeniously concealed within the saloon dining table and plenty of storage space for water toys and provisions – including two scuba diving lockers.

Below, the accommodation can be configured between the port and starboard hulls to suit owner specification. McConaghy present their concept for the MC100 with a galley, utility, crew quarters and two en suite guest cabins to port, and the master suite, a third guest cabin and Captain’s accommodation to starboard. This results in accommodation for eight in total with a complement of up to four crew.

Details

Designer - Ker Yacht Design

Composite Engineering - Ker Yacht Design

Builder - McConaghy Boats

Systems Design - McConaghy Boats

Interior Design - m2atelier

Certificates - BV/MCA

Principal Particulars

Length Overall 30.5m

Beam Overall 12.3m

Draft (with centerboards retracted) 2.2m

Headroom saloon 2.0-2.3m

Headroom hulls 2.0-2.3m

Fuel Capacity 3,000Litres

Water Capacity 1,600Litres

Engine 2 x 4LV230 Yanmar Engine

Generators 1 x27kW Onan generator MDKDU27kw

Hull and Deck Structure

The hull, deck and superstructure will be of composite construction (Epoxy resin, Carbon and E-glass).

The hull, deck and structure to be post-cured at high temperatures in a custom-built oven to elevate the TG of the resin.

Both bottom shell and topside shell are framed by major transverse bulkheads, whilst the bottom shell is reinforced with a matrix of floors and longitudinal stringers, and the topsides shell by longitudinal stringers.

Watertight bulkheads are fitted.

Read more

Propulsion
Engine
2 x 4LV230 Yanmar Engine (Shaft Drive)
Additional Accommodation Details

1501 Interior General Information

General

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

The modern interior is constructed using a mix of hand-painted surfaces, lightweight veneer with compressed foam cores and soft fabric liners.

Modern Interior joinery style. All paneling are thin veneers over lightweight panels

1502 Aft Main Deck

Lounge at aft cockpit with round table facing aft

Bar at extension of lounge

Tempered safety glass sliding doors between saloon and aft deck.

1503 Saloon

General:

Choice of sole, hull and headliners.

Long overhead skylights

Overhead recessed lights and down lights

Recessed courtesy lighting at floor level

Saloon to port:

U-shaped settee & coffee tables

Under seating storage

Stairs to port hull

110/230V AC and 12/24V USB sockets.

Navigation station forward:

Clear carbon navigation and electronics panel

110/230V AC and 12/24V USB sockets

Remote battery switches

Stbd side dinning area:

Dinning table for 12

Stairs to stbd hull

Note: Lose furniture not included

Stbd side Bar area:

Extension Bar

Note: Bar stools not included

1504 FWD Cockpit

Twin opening doors to fwd cockpit

Port &Stbd settees

Stairs to foredeck

Note: Jacuzzi not included.

PORT HULL

1505 Port forward head & shower bathroom

Large shower with quality fittings, inboard hatch

Sink with cabinet and hot/cold mixer taps

Electric toilet

Locker with mirror

Seaward facing side windows

Overhead down lights

1506 Port forward guest cabin 2

Hanging lockers inboard

Outboard facing drawers

Underdeck seaward facing double berth

Storage under berth

Soft close drawers under berth

Full length desk with drawers

Overhead recessed lightings and down lights

Recessed courtesy lighting at floor level

Reading lights and lamps

Overhead hatch

Choice of sole, hull and headliners

110/230V AC and USB sockets

1507 Port Midship guest cabin 3

Seaward facing twin berths

Storage under berths

Hanging lockers

desk

Overhead recessed lightings and down lights

Recessed courtesy lighting at floor level

Reading lights and lamps.

Overhead hatch

Seaward facing side window

Choice of sole, hull and headliners

110/230V AC and USB sockets

1508 Port Midship guest cabin3 head & shower room

Large shower with quality fittings, corian countertop and inboard hatch

Twin sinks with cabinet and hot/cold mixer taps

Electric fresh water toilet

Mirror

1509 Crew Cabin with head & shower room

Double bunk

Storage under bunk

Hanging lockers

Overhead recessed lightings and down lights

Recessed courtesy lighting at floor level

Reading lights and lamps

Overhead hatch

Seaward facing side window

Choice of sole, hull and headliners

110/230V AC and USB sockets

Large shower with quality fittings, corian countertop and inboard hatch

Sink with cabinet and hot/cold mixer tap

Electric fresh water toilet

1510 Port Midship Utility room

One (1) x washing machine

One (1) x dryer

One (1) x fridge

One (1) x freezer

1511 Port aft galley

One (1) x twin door Fridge and 1 x twin door Freezer WSE6870SA or Similar

One (1) x Hob (4 unit induction) Miele AEG IPE64551FB or similar

One (1) x Oven - Miele 600mm

One (1) x Dishwasher Miele

One (1) x Drawer fridge Vitrifrigo DW180.RFX or DTX or Isotherm

One (1) x Wine cooler Miele

One(1) x Isotherm Ice maker

Crew seating with table

Bench tops, cupboards & drawers

Storage under bench tops, cupboards & draws

Overhead and floor level recessed courtesy lighting and down lights

110/230V AC and USB sockets

STBD HULL

1512 Stbd forward guest cabin 1 head & shower bathroom

Shower with quality fittings, inboard hatch

Sink with cabinet and hot/cold mixer taps

Electric toilet

Mirror

Seaward facing side windows

Overhead down lights

1513 Stbd forward Guest cabin 1

Double berth

Storage under berth

Hanging lockers

Full length desk with drawers

Overhead recessed lightings and down lights

Recessed courtesy lighting at floor level

Reading lights and lamps

Overhead hatch

Seaward facing side window

Choice of sole, hull and headliners

110/230V AC and USB sockets.

1514 Master,Head & Shower room

Master Cabin:

Double berth

Storage under berth raises on gas struts

Soft close drawers under and beside berth

Hanging lockers

Fwd facing windows

Full length desk inboard

Lounge outboard

Overhead recessed lights and down lights

Recessed courtesy lighting at floor level

Reading lights and lamps

Choice of sole, hull and headliners

110/230V AC and USB sockets

Shower room:

Large shower with quality fittings, inboard hatch

Twin sinks with cabinet and hot/cold mixer taps

Two electric toilets

Full length mirror

Overhead down lights

1515 Stbd aft Captain’s room with head and shower room

double berth

Storage under berth

Full length desk with drawers

Hanging lockers

Overhead recessed lightings and down lights

Recessed courtesy lighting at floor level

Reading lights and lamps.

Overhead hatch

Seaward facing side window

Choice of sole, hull and headliners

110/230V AC and USB sockets

Shower with quality fittings, Corian countertop and inboard hatch

Sink with cabinet and hot/cold mixer tap

Electric fresh water toilet

Mirror

1516 Stbd aft day head

Electric fresh water toilet

Sink with cabinet and hot/cold mixer tap

Mirror

Overhead recessed lightings and down lights

110/230V AC and USB sockets

This McConaghy MC100 has been viewed 2454 times
Broker/Dealer Information

Ancasta Antibes

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France
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