McConaghy KER 33
Kobe, Japanon the market since 13 days
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About
The Ker 33 is an IRC cruiser/racer and sets a new benchmark for this popular division. The boats embody all the talents of Ker Design, along with McConaghy’s unrivaled build quality.
The philosophy behind the 33 was to highlight the design, build expertise and techniques that this duo has to offer.
Noting the success of the 30-35ft racer/cruisers currently on the market that have been performing on the IRC scene both inshore and offshore, we felt there was clearly the demand for another boat to fit within
this category, particularly one with this much potential.
The McConaghy Ker 33 is an out and out racing machine optimised for competition under the IRC rating system, with the bonus of surprisingly civilised interior accommodation.
At first sight it’s immediately apparent that this boat has been designed for speed – even the stanchions, pushpit and pulpit are of an efficient aerofoil shape.
These are of composite construction and autoclaved in house. In addition, much thought has gone into producing an ergonomic deck layout in which friction is kept to an absolute minimum and running rigging
led in straight lines, without turning corners, wherever possible.
The deck gear package is by Harken, with clutches by Spinlock.
Given the pure raceboat treatment on deck, many would expect to find a bare and stripped out interior. Instead, there’s a surprisingly spacious arrangement that’s also well lit, thanks to the trademark big windows and a mostly white finish.
The history of KER 33 Aphros (Ex Acheron):
2016: Launched on UK COWES Island
2018: Replaced the new carbon mast (AXXON)
2020: Imported to Japan, suspended until 2021 due to COVID-19
Maintenance
Hull, rigs, engine, electrical equipment (ongoing maintenance by professionals)
Keel removal, keel bolt replacement (2020)
Rudder removal, bearing refresh and replacement (2020, 2022, 2024, 2025)
Mast-mount removal, rigin check, and repainting (2023)
Forestay New Replacement (2023)
Carbon Boom, Carbon Tiller Repainting (2023)
New replacement of Haken Carb Foil (2024)
Wind Sensor Replacement (2025)
BUILDER: McChonaghy
Designer: KER
DIMENSIONS
LOA: 9.99 m
Beam: 3.34 m
Draft: 2 m
Displacement: 3807 kg
ENGINE
Engine: YANMAR 3TM 20
Propeller: TWO FOLDER BRISKY
Cruising Speed: 7.5 kn
TANKS
Fuel: 40 l
ACCOMMODATIONS
Berths number: 4 SINGLE
NAVIGATION INSTRUMENTS
Electronics: B&G
GPS: YES
VHF: ICOM
Compass: Precision 9
Plotter: Zeus 2 7 Inch
Navigation instruments notes:
Complete B&G System
H5000 CPU Hercules
Two H5000 Graphic Display
Nemesis Mast Display
Zeus2 Chart Plotter and Wi-Fi System
Precision 9 Compass
Rudder sensor
Forestay load sensor and Wi-Fi system
Two auto bilge pump
VHF and AIS(icom)
ELECTRICAL
Batteries: 2 batteries
Battery charger: 100-z40v AZ
SAILS, SPARS&RIGGING
Racing Sail (Doyle Stratis)
Two main (no reef 2022 / 6 and one reef 2024 / 3 ). Almost new.
J1S (almost new) 2024 / 8
J2S (almost new) 2022 / 6
J3S (good condition) 2021 / 4
A1.5 (almost new) 2025 / 5
A2 (good condition) 2023 / 6
A2DEEP (almost new) 2026 / 5
A3 (good condition) 2021 / 4
Cableless A0 (with Carver Drum System, almost new) 2022 / 1
Cableless A60 (with top swivel, almost new) 2024 / 6
Jib Top (panel, good Condition) 2021 / 7
Drifter (panel, good condition) 2021 / 4
Storm Jib, Storm trysle (brand new)
Additionally, some training sails
Rigging: ROD
Mast: CARBON
Boom: CARBON
Vang: Yes
Running Rigging: Dyneema
Spinnaker pole: yes
Tuff Luff: YES
Spars and rigging notes:
Bow Split Extended by 200mm
Maintenance
Hull, rigs, engine, electrical equipment (ongoing maintenance by professionals)
Mast-mount removal, rigin check, and repainting (2023)
Forestay New Replacement (2023)
Carbon Boom, Carbon Tiller Repainting (2023)
New replacement of Haken Carb Foil (2024)
Wind Sensor Replacement (2025)
DECK EQUIPMENT
Deck hardware: Harken
Hatches: LEWMAR
Winches: HARKEN
Deck equipment notes:
Replaced with a large round bow hatch (LEWMAR)
Special Harken Blocks in Each Section
Replace with Harken Performer Winches (4 pieces)
Upgrades to the traveler, main system, and jib coupler
SAFETY
CE Registration: YES
Fire-extinguishers: 2
JCI ship inspection certified, complete coastal specification equipment set (10 inflatable life jackets ×)
CONSTRUCTION
Upgrades and modifications (weight reduced by 80kg)
Black paint on the upper hull and bottom (2020, Alexseal Premium Yacht Coating, Durepox Epoxy)
Removed the ceiling and interior panels, painted white with epoxy, and installed mahogany trim.
Carbon Cabin Table (McConaghy)
Carbon sink, carbon washbasin, carbon toilet, carbon slide hatch, carbon washboard (McConaghy)
Carbon bow floor board, carbon engine box board (Dome)
Carbon Chart Table (Dome)
Replaced with a large round bow hatch (LEWMAR)
Racing Through Hull Valve Replacement
Keel removal, keel bolt replacement (2020)
Ladder removal, bearing refresh and replacement (2020, 2022, 2024, 2025)
EXTRAS
wimming ladder: YES
One of the most succesful Ker33 currently racing under IRC in Asia, with multiple victories in major Japanese regattas.
Two setttees in the saloon, ahead, a nav station, a galley, and stylish carbun table.
IRC Result
2022 NIPPON CUP SPRING / Division B Champion
2022 Kanto Middleboat / Class B Winner
2022 All Japan Middleboat / Class B 2nd Place
2022 Pearl Race (Offshore 150M) / 2nd overall, 1st place in Class C
2022 NIPPON CUP AUTUMN / Division B Champion
2023 NIPPON CUP SPRING / Division A Champion
2023 Kanto Middleboat / 3rd overall, 1st place in Class B
2023 All Japan Middleboat / Class B Champion
2023 Pearl Race / Class D Winner
2024 Kanto Middleboat / Overall Champion
2024 Pearl Race / Class D Winner
2025 Kanto Middleboat / Overall Champion
2025 All Japan Middleboat / CLSSS-B Winner
2025 Pearl Race / 3rd overall, Class C winner
Accessories
JCI ship inspection certified, complete coastal specification equipment set (10 inflatable life jackets ×)
Dedicated slipway
Spinnaker Poles and Mast Track
Short Carbon Bowssplit for Spinnaker
Spare stantion
Companion Way Bag
seat bag
tiller cover
boom cover
mainsail cover
Full deck cover
Cabin table cover
Winch handles (4 pieces)
The philosophy behind the 33 was to highlight the design, build expertise and techniques that this duo has to offer.
Noting the success of the 30-35ft racer/cruisers currently on the market that have been performing on the IRC scene both inshore and offshore, we felt there was clearly the demand for another boat to fit within
this category, particularly one with this much potential.
The McConaghy Ker 33 is an out and out racing machine optimised for competition under the IRC rating system, with the bonus of surprisingly civilised interior accommodation.
At first sight it’s immediately apparent that this boat has been designed for speed – even the stanchions, pushpit and pulpit are of an efficient aerofoil shape.
These are of composite construction and autoclaved in house. In addition, much thought has gone into producing an ergonomic deck layout in which friction is kept to an absolute minimum and running rigging
led in straight lines, without turning corners, wherever possible.
The deck gear package is by Harken, with clutches by Spinlock.
Given the pure raceboat treatment on deck, many would expect to find a bare and stripped out interior. Instead, there’s a surprisingly spacious arrangement that’s also well lit, thanks to the trademark big windows and a mostly white finish.
The history of KER 33 Aphros (Ex Acheron):
2016: Launched on UK COWES Island
2018: Replaced the new carbon mast (AXXON)
2020: Imported to Japan, suspended until 2021 due to COVID-19
Maintenance
Hull, rigs, engine, electrical equipment (ongoing maintenance by professionals)
Keel removal, keel bolt replacement (2020)
Rudder removal, bearing refresh and replacement (2020, 2022, 2024, 2025)
Mast-mount removal, rigin check, and repainting (2023)
Forestay New Replacement (2023)
Carbon Boom, Carbon Tiller Repainting (2023)
New replacement of Haken Carb Foil (2024)
Wind Sensor Replacement (2025)
BUILDER: McChonaghy
Designer: KER
DIMENSIONS
LOA: 9.99 m
Beam: 3.34 m
Draft: 2 m
Displacement: 3807 kg
ENGINE
Engine: YANMAR 3TM 20
Propeller: TWO FOLDER BRISKY
Cruising Speed: 7.5 kn
TANKS
Fuel: 40 l
ACCOMMODATIONS
Berths number: 4 SINGLE
NAVIGATION INSTRUMENTS
Electronics: B&G
GPS: YES
VHF: ICOM
Compass: Precision 9
Plotter: Zeus 2 7 Inch
Navigation instruments notes:
Complete B&G System
H5000 CPU Hercules
Two H5000 Graphic Display
Nemesis Mast Display
Zeus2 Chart Plotter and Wi-Fi System
Precision 9 Compass
Rudder sensor
Forestay load sensor and Wi-Fi system
Two auto bilge pump
VHF and AIS(icom)
ELECTRICAL
Batteries: 2 batteries
Battery charger: 100-z40v AZ
SAILS, SPARS&RIGGING
Racing Sail (Doyle Stratis)
Two main (no reef 2022 / 6 and one reef 2024 / 3 ). Almost new.
J1S (almost new) 2024 / 8
J2S (almost new) 2022 / 6
J3S (good condition) 2021 / 4
A1.5 (almost new) 2025 / 5
A2 (good condition) 2023 / 6
A2DEEP (almost new) 2026 / 5
A3 (good condition) 2021 / 4
Cableless A0 (with Carver Drum System, almost new) 2022 / 1
Cableless A60 (with top swivel, almost new) 2024 / 6
Jib Top (panel, good Condition) 2021 / 7
Drifter (panel, good condition) 2021 / 4
Storm Jib, Storm trysle (brand new)
Additionally, some training sails
Rigging: ROD
Mast: CARBON
Boom: CARBON
Vang: Yes
Running Rigging: Dyneema
Spinnaker pole: yes
Tuff Luff: YES
Spars and rigging notes:
Bow Split Extended by 200mm
Maintenance
Hull, rigs, engine, electrical equipment (ongoing maintenance by professionals)
Mast-mount removal, rigin check, and repainting (2023)
Forestay New Replacement (2023)
Carbon Boom, Carbon Tiller Repainting (2023)
New replacement of Haken Carb Foil (2024)
Wind Sensor Replacement (2025)
DECK EQUIPMENT
Deck hardware: Harken
Hatches: LEWMAR
Winches: HARKEN
Deck equipment notes:
Replaced with a large round bow hatch (LEWMAR)
Special Harken Blocks in Each Section
Replace with Harken Performer Winches (4 pieces)
Upgrades to the traveler, main system, and jib coupler
SAFETY
CE Registration: YES
Fire-extinguishers: 2
JCI ship inspection certified, complete coastal specification equipment set (10 inflatable life jackets ×)
CONSTRUCTION
Upgrades and modifications (weight reduced by 80kg)
Black paint on the upper hull and bottom (2020, Alexseal Premium Yacht Coating, Durepox Epoxy)
Removed the ceiling and interior panels, painted white with epoxy, and installed mahogany trim.
Carbon Cabin Table (McConaghy)
Carbon sink, carbon washbasin, carbon toilet, carbon slide hatch, carbon washboard (McConaghy)
Carbon bow floor board, carbon engine box board (Dome)
Carbon Chart Table (Dome)
Replaced with a large round bow hatch (LEWMAR)
Racing Through Hull Valve Replacement
Keel removal, keel bolt replacement (2020)
Ladder removal, bearing refresh and replacement (2020, 2022, 2024, 2025)
EXTRAS
wimming ladder: YES
One of the most succesful Ker33 currently racing under IRC in Asia, with multiple victories in major Japanese regattas.
Two setttees in the saloon, ahead, a nav station, a galley, and stylish carbun table.
IRC Result
2022 NIPPON CUP SPRING / Division B Champion
2022 Kanto Middleboat / Class B Winner
2022 All Japan Middleboat / Class B 2nd Place
2022 Pearl Race (Offshore 150M) / 2nd overall, 1st place in Class C
2022 NIPPON CUP AUTUMN / Division B Champion
2023 NIPPON CUP SPRING / Division A Champion
2023 Kanto Middleboat / 3rd overall, 1st place in Class B
2023 All Japan Middleboat / Class B Champion
2023 Pearl Race / Class D Winner
2024 Kanto Middleboat / Overall Champion
2024 Pearl Race / Class D Winner
2025 Kanto Middleboat / Overall Champion
2025 All Japan Middleboat / CLSSS-B Winner
2025 Pearl Race / 3rd overall, Class C winner
Accessories
JCI ship inspection certified, complete coastal specification equipment set (10 inflatable life jackets ×)
Dedicated slipway
Spinnaker Poles and Mast Track
Short Carbon Bowssplit for Spinnaker
Spare stantion
Companion Way Bag
seat bag
tiller cover
boom cover
mainsail cover
Full deck cover
Cabin table cover
Winch handles (4 pieces)
