XBOAT ref :6391. SIGMA 400 – 1994
A characterful sailing yacht designed by Rob Humphreys, high-performance and perfectly suited to fast cruising
Built in 1994 by Marine Projects, the SIGMA 400 is a sailing yacht designed by the renowned British naval architect Rob Humphreys, known for his high-performance hulls and sailing qualities.
With its 12.27 m length, 3.89 m beam, 2.29 m draft, and particularly comprehensive rigging, this Sigma 400 combines a true cruising capability with a sporty temperament.
Its interior layout prioritizes conviviality and autonomy, featuring three double cabins and seven berths, while retaining the marine and sporty spirit characteristic of Sigma yachts.
A HIGH-PERFORMANCE HULL
The SIGMA 400 benefits from a design focused on performance while remaining suitable for offshore cruising.
• Overall length: 12.27 m
• Beam: 3.89 m
• Draft: 2.29 m
• Polyester hull
• Monohull
• Designer: Rob Humphreys
• Long keel
• French flag
Its design and sail plan make it a particularly appealing boat for owners seeking sailing sensations without compromising the comfort required for cruising.
A COMPREHENSIVE SAIL PLAN
The boat is equipped with a set of sails allowing easy adaptation to various sailing conditions:
• Elvström Full Batten mainsail, Mylar/Taffeta, in good condition
• Roller furling genoa, Mylar/Taffeta, fair condition
• Staysail with removable stay
• Symmetrical spinnaker
• Carbon spinnaker pole
This configuration offers great versatility, from coastal sailing to more challenging offshore passages.
The presence of a removable stay with a staysail is a real advantage for sailing in strong winds, while the symmetrical spinnaker allows full exploitation of the hull’s qualities on downwind courses.
ENGINE
The Sigma 400 is fitted with a Perkins Perama M35 35 HP engine, centrally installed with a direct shaft drive.
• Engine: Perkins Perama M35
• Power: 35 HP
• Diesel
• Transmission: direct shaft drive
• Engine hours: 3,400 h
• Fuel tank: 100 litres
The engine has been maintained by a professional mechanic, with up-to-date service records.
The heat exchanger and exhaust elbow have been cleaned.
The transmission has also received recent attention with:
• New shaft seal
• New hydrolube ring
• KiwiProp three-blade carbon propeller
This setup provides a particularly reliable and efficient propulsion system.
INTERIOR AND LIFE ON BOARD
The interior offers a layout designed to comfortably accommodate family and crew during cruises.
Configuration
• 3 double cabins
• 7 berths
• 1 head
• Marine toilet
• Saloon
• Galley
• Hot water
• Refrigerator
• Oven
• Gas stove
The interior volume allows for both group outings and multi-week cruises.
The boat also features heating, currently requiring servicing.
ELECTRONICS AND NAVIGATION
The SIGMA 400 is equipped with a comprehensive set of electronics for a boat of this generation:
• Furuno radar
• Furuno GP32 GPS
• Raymarine i60 depth sounder
• Raymarine ST7002+ autopilot
• VHF
• Additional navigation equipment
The autopilot notably provides effective relief for the crew during long passages.
DECK EQUIPMENT
The deck and cockpit have been arranged to facilitate manoeuvres and enhance comfort while sailing.
• Teak cockpit
• Electric windlass
• Davits
• Swim platform
• Sprayhood
• Aluminium mast with through-deck – DYFORM rigging (over 10 years old)
• Carbon spinnaker pole
• Fittings adapted to the boat’s programme
The electric windlass simplifies anchoring manoeuvres, while the swim platform improves access to the water and onboard circulation.
DINGHY
The boat is sold with:
• Plastimo dinghy
• Suzuki 2 HP outboard motor
• Davits
A SIGMA 400 WITH A MARINE SPIRIT
This SIGMA 400 embodies the qualities that have made this series renowned: a high-performance hull, versatile rigging, polyester construction, and a layout allowing for genuine cruising voyages.
Its sail inventory is particularly noteworthy, featuring a Full Batten mainsail, roller furling genoa, staysail on a removable stay, and a symmetrical spinnaker.
Recent maintenance on the propulsion system, including cleaned heat exchanger and exhaust elbow, new shaft seal and hydrolube ring, as well as a KiwiProp three-blade carbon propeller, is also a key selling point.
The SIGMA 400 is aimed at sailors seeking a 12-metre yacht that is both high-performance, seaworthy, and truly designed for sailing, rather than just a simple cruising boat.
Its Rob Humphreys pedigree, comprehensive sail plan, 2.29 m draft, and navigation equipment make it a particularly appealing yacht for fast cruising, offshore sailing, or crewed passages.
A boat that retains the spirit of 1990s performance yachts while offering a level of accommodation that comfortably allows for cruising.
